0000027904--12-312021Q3falseP5YP5Y2022-01-012029-12-312030-01-012031-12-312023-01-012028-12-312023-01-012027-12-312025-12-312022-01-012023-12-312021-10-012028-12-312021-10-012033-12-312026-01-012045-12-312022-01-012036-12-312021-10-012030-12-312022-12-3100000279042021-01-012021-09-30xbrli:shares00000279042021-09-30iso4217:USD00000279042020-12-310000027904dal:PassengerAirTrafficMember2021-09-300000027904dal:PassengerAirTrafficMember2020-12-310000027904dal:ProductAndServiceOtherLoyaltyProgramMember2021-09-300000027904dal:ProductAndServiceOtherLoyaltyProgramMember2020-12-31iso4217:USDxbrli:shares0000027904us-gaap:PassengerMember2021-07-012021-09-300000027904us-gaap:PassengerMember2020-07-012020-09-300000027904us-gaap:PassengerMember2021-01-012021-09-300000027904us-gaap:PassengerMember2020-01-012020-09-300000027904us-gaap:CargoAndFreightMember2021-07-012021-09-300000027904us-gaap:CargoAndFreightMember2020-07-012020-09-300000027904us-gaap:CargoAndFreightMember2021-01-012021-09-300000027904us-gaap:CargoAndFreightMember2020-01-012020-09-300000027904us-gaap:ProductAndServiceOtherMember2021-07-012021-09-300000027904us-gaap:ProductAndServiceOtherMember2020-07-012020-09-300000027904us-gaap:ProductAndServiceOtherMember2021-01-012021-09-300000027904us-gaap:ProductAndServiceOtherMember2020-01-012020-09-3000000279042021-07-012021-09-3000000279042020-07-012020-09-3000000279042020-01-012020-09-3000000279042019-12-3100000279042020-09-300000027904us-gaap:CommonStockMember2020-12-310000027904us-gaap:AdditionalPaidInCapitalMember2020-12-310000027904us-gaap:RetainedEarningsMember2020-12-310000027904us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-12-310000027904us-gaap:TreasuryStockMember2020-12-310000027904us-gaap:RetainedEarningsMember2021-01-012021-03-3100000279042021-01-012021-03-310000027904us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-01-012021-03-310000027904us-gaap:CommonStockMember2021-01-012021-03-310000027904us-gaap:AdditionalPaidInCapitalMember2021-01-012021-03-310000027904us-gaap:TreasuryStockMember2021-01-012021-03-310000027904us-gaap:CommonStockMember2021-03-310000027904us-gaap:AdditionalPaidInCapitalMember2021-03-310000027904us-gaap:RetainedEarningsMember2021-03-310000027904us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-03-310000027904us-gaap:TreasuryStockMember2021-03-3100000279042021-03-310000027904us-gaap:RetainedEarningsMember2021-04-012021-06-3000000279042021-04-012021-06-300000027904us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-04-012021-06-300000027904us-gaap:CommonStockMember2021-04-012021-06-300000027904us-gaap:AdditionalPaidInCapitalMember2021-04-012021-06-300000027904us-gaap:TreasuryStockMember2021-04-012021-06-300000027904us-gaap:CommonStockMember2021-06-300000027904us-gaap:AdditionalPaidInCapitalMember2021-06-300000027904us-gaap:RetainedEarningsMember2021-06-300000027904us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-06-300000027904us-gaap:TreasuryStockMember2021-06-3000000279042021-06-300000027904us-gaap:RetainedEarningsMember2021-07-012021-09-300000027904us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-07-012021-09-300000027904us-gaap:CommonStockMember2021-07-012021-09-300000027904us-gaap:AdditionalPaidInCapitalMember2021-07-012021-09-300000027904us-gaap:TreasuryStockMember2021-07-012021-09-300000027904us-gaap:CommonStockMember2021-09-300000027904us-gaap:AdditionalPaidInCapitalMember2021-09-300000027904us-gaap:RetainedEarningsMember2021-09-300000027904us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-09-300000027904us-gaap:TreasuryStockMember2021-09-300000027904us-gaap:CommonStockMember2019-12-310000027904us-gaap:AdditionalPaidInCapitalMember2019-12-310000027904us-gaap:RetainedEarningsMember2019-12-310000027904us-gaap:AccumulatedOtherComprehensiveIncomeMember2019-12-310000027904us-gaap:TreasuryStockMember2019-12-310000027904us-gaap:RetainedEarningsMember2020-01-012020-03-3100000279042020-01-012020-03-310000027904us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-01-012020-03-310000027904us-gaap:CommonStockMember2020-01-012020-03-310000027904us-gaap:AdditionalPaidInCapitalMember2020-01-012020-03-310000027904us-gaap:TreasuryStockMember2020-01-012020-03-310000027904us-gaap:CommonStockMember2020-03-310000027904us-gaap:AdditionalPaidInCapitalMember2020-03-310000027904us-gaap:RetainedEarningsMember2020-03-310000027904us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-03-310000027904us-gaap:TreasuryStockMember2020-03-3100000279042020-03-310000027904us-gaap:RetainedEarningsMember2020-04-012020-06-3000000279042020-04-012020-06-300000027904us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-04-012020-06-300000027904us-gaap:CommonStockMember2020-04-012020-06-300000027904us-gaap:AdditionalPaidInCapitalMember2020-04-012020-06-300000027904us-gaap:TreasuryStockMember2020-04-012020-06-300000027904us-gaap:CommonStockMember2020-06-300000027904us-gaap:AdditionalPaidInCapitalMember2020-06-300000027904us-gaap:RetainedEarningsMember2020-06-300000027904us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-06-300000027904us-gaap:TreasuryStockMember2020-06-3000000279042020-06-300000027904us-gaap:RetainedEarningsMember2020-07-012020-09-300000027904us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-07-012020-09-300000027904us-gaap:CommonStockMember2020-07-012020-09-300000027904us-gaap:AdditionalPaidInCapitalMember2020-07-012020-09-300000027904us-gaap:TreasuryStockMember2020-07-012020-09-300000027904us-gaap:CommonStockMember2020-09-300000027904us-gaap:AdditionalPaidInCapitalMember2020-09-300000027904us-gaap:RetainedEarningsMember2020-09-300000027904us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-09-300000027904us-gaap:TreasuryStockMember2020-09-300000027904srt:RevisionOfPriorPeriodReclassificationAdjustmentMember2020-01-012020-12-310000027904srt:RevisionOfPriorPeriodReclassificationAdjustmentMember2020-07-012020-09-300000027904srt:RevisionOfPriorPeriodReclassificationAdjustmentMember2019-01-012019-12-310000027904srt:RevisionOfPriorPeriodReclassificationAdjustmentMember2019-07-012019-09-300000027904dal:PassengerAirTrafficMember2021-07-012021-09-300000027904dal:PassengerAirTrafficMember2020-07-012020-09-300000027904dal:PassengerAirTrafficMember2021-01-012021-09-300000027904dal:PassengerAirTrafficMember2020-01-012020-09-300000027904dal:PassengerLoyaltyTravelAwardsMember2021-07-012021-09-300000027904dal:PassengerLoyaltyTravelAwardsMember2020-07-012020-09-300000027904dal:PassengerLoyaltyTravelAwardsMember2021-01-012021-09-300000027904dal:PassengerLoyaltyTravelAwardsMember2020-01-012020-09-300000027904dal:PassengerTravelRelatedServicesMember2021-07-012021-09-300000027904dal:PassengerTravelRelatedServicesMember2020-07-012020-09-300000027904dal:PassengerTravelRelatedServicesMember2021-01-012021-09-300000027904dal:PassengerTravelRelatedServicesMember2020-01-012020-09-300000027904dal:ProductAndServiceOtherRefineryMember2021-07-012021-09-300000027904dal:ProductAndServiceOtherRefineryMember2020-07-012020-09-300000027904dal:ProductAndServiceOtherRefineryMember2021-01-012021-09-300000027904dal:ProductAndServiceOtherRefineryMember2020-01-012020-09-300000027904dal:ProductAndServiceOtherLoyaltyProgramMember2021-07-012021-09-300000027904dal:ProductAndServiceOtherLoyaltyProgramMember2020-07-012020-09-300000027904dal:ProductAndServiceOtherLoyaltyProgramMember2021-01-012021-09-300000027904dal:ProductAndServiceOtherLoyaltyProgramMember2020-01-012020-09-300000027904dal:ProductAndServiceOtherAncillaryBusinessesMember2021-07-012021-09-300000027904dal:ProductAndServiceOtherAncillaryBusinessesMember2020-07-012020-09-300000027904dal:ProductAndServiceOtherAncillaryBusinessesMember2021-01-012021-09-300000027904dal:ProductAndServiceOtherAncillaryBusinessesMember2020-01-012020-09-300000027904dal:ProductAndServiceOtherMiscellaneousMember2021-07-012021-09-300000027904dal:ProductAndServiceOtherMiscellaneousMember2020-07-012020-09-300000027904dal:ProductAndServiceOtherMiscellaneousMember2021-01-012021-09-300000027904dal:ProductAndServiceOtherMiscellaneousMember2020-01-012020-09-300000027904dal:ProductAndServiceOtherLoyaltyProgramMember2019-12-310000027904dal:ProductAndServiceOtherLoyaltyProgramMember2020-09-300000027904us-gaap:DomesticDestinationMemberus-gaap:PassengerMember2021-07-012021-09-300000027904us-gaap:DomesticDestinationMemberus-gaap:PassengerMember2020-07-012020-09-300000027904us-gaap:DomesticDestinationMemberus-gaap:PassengerMember2021-01-012021-09-300000027904us-gaap:DomesticDestinationMemberus-gaap:PassengerMember2020-01-012020-09-300000027904us-gaap:PassengerMemberus-gaap:AtlanticDestinationMember2021-07-012021-09-300000027904us-gaap:PassengerMemberus-gaap:AtlanticDestinationMember2020-07-012020-09-300000027904us-gaap:PassengerMemberus-gaap:AtlanticDestinationMember2021-01-012021-09-300000027904us-gaap:PassengerMemberus-gaap:AtlanticDestinationMember2020-01-012020-09-300000027904us-gaap:LatinAmericaDestinationMemberus-gaap:PassengerMember2021-07-012021-09-300000027904us-gaap:LatinAmericaDestinationMemberus-gaap:PassengerMember2020-07-012020-09-300000027904us-gaap:LatinAmericaDestinationMemberus-gaap:PassengerMember2021-01-012021-09-300000027904us-gaap:LatinAmericaDestinationMemberus-gaap:PassengerMember2020-01-012020-09-300000027904us-gaap:PacificDestinationMemberus-gaap:PassengerMember2021-07-012021-09-300000027904us-gaap:PacificDestinationMemberus-gaap:PassengerMember2020-07-012020-09-300000027904us-gaap:PacificDestinationMemberus-gaap:PassengerMember2021-01-012021-09-300000027904us-gaap:PacificDestinationMemberus-gaap:PassengerMember2020-01-012020-09-300000027904us-gaap:DomesticDestinationMember2021-07-012021-09-300000027904us-gaap:DomesticDestinationMember2020-07-012020-09-300000027904us-gaap:DomesticDestinationMember2021-01-012021-09-300000027904us-gaap:DomesticDestinationMember2020-01-012020-09-300000027904us-gaap:AtlanticDestinationMember2021-07-012021-09-300000027904us-gaap:AtlanticDestinationMember2020-07-012020-09-300000027904us-gaap:AtlanticDestinationMember2021-01-012021-09-300000027904us-gaap:AtlanticDestinationMember2020-01-012020-09-300000027904us-gaap:LatinAmericaDestinationMember2021-07-012021-09-300000027904us-gaap:LatinAmericaDestinationMember2020-07-012020-09-300000027904us-gaap:LatinAmericaDestinationMember2021-01-012021-09-300000027904us-gaap:LatinAmericaDestinationMember2020-01-012020-09-300000027904us-gaap:PacificDestinationMember2021-07-012021-09-300000027904us-gaap:PacificDestinationMember2020-07-012020-09-300000027904us-gaap:PacificDestinationMember2021-01-012021-09-300000027904us-gaap:PacificDestinationMember2020-01-012020-09-300000027904us-gaap:FairValueMeasurementsRecurringMember2021-09-300000027904us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2021-09-300000027904us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2021-09-300000027904us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel3Member2021-09-300000027904us-gaap:FairValueMeasurementsRecurringMember2020-12-310000027904us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2020-12-310000027904us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2020-12-310000027904us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel3Member2020-12-31xbrli:pure0000027904dal:WheelsUpMember2021-09-300000027904dal:WheelsUpMember2020-12-310000027904dal:HanjinKALMember2021-09-300000027904dal:HanjinKALMember2020-12-310000027904dal:AirFranceKLMMember2021-09-300000027904dal:AirFranceKLMMember2020-12-310000027904dal:ChinaEasternMember2021-09-300000027904dal:ChinaEasternMember2020-12-310000027904dal:ClearSecureIncMember2021-09-300000027904dal:ClearSecureIncMember2020-12-310000027904dal:UnifiMember2021-09-300000027904dal:UnifiMember2020-12-310000027904dal:OtherEquitySecurityFVInvestmentsMember2021-09-300000027904dal:OtherEquitySecurityFVInvestmentsMember2020-12-310000027904dal:VirginAtlanticMember2021-09-300000027904dal:LATAMAirlinesGroupS.A.Member2021-09-300000027904dal:GrupoAeromexicoMember2021-09-300000027904dal:GrupoAeromexicoLATAMAndVirginAtlanticMember2021-09-300000027904dal:GrupoAeromexicoLATAMAndVirginAtlanticMemberus-gaap:NotesPayableOtherPayablesMember2021-09-300000027904dal:GrupoAeromexicoMemberus-gaap:NotesPayableOtherPayablesMember2021-09-300000027904dal:GrupoAeromexicoMember2021-09-300000027904dal:GOLLinhasAereasInteligentesMember2020-01-012020-12-310000027904us-gaap:UnsecuredDebtMembersrt:MinimumMemberdal:UnsecuredNotesMember2021-09-300000027904us-gaap:UnsecuredDebtMembersrt:MaximumMemberdal:UnsecuredNotesMember2021-09-300000027904us-gaap:UnsecuredDebtMemberdal:UnsecuredNotesMember2021-09-300000027904us-gaap:UnsecuredDebtMemberdal:UnsecuredNotesMember2020-12-310000027904us-gaap:UnsecuredDebtMemberdal:PayrollSupportProgramLoansMember2021-09-300000027904us-gaap:UnsecuredDebtMemberdal:PayrollSupportProgramLoansMember2020-12-310000027904us-gaap:SecuredDebtMemberdal:SkyMilesNotesMembersrt:MinimumMember2021-09-300000027904srt:MaximumMemberus-gaap:SecuredDebtMemberdal:SkyMilesNotesMember2021-09-300000027904us-gaap:SecuredDebtMemberdal:SkyMilesNotesMember2021-09-300000027904us-gaap:SecuredDebtMemberdal:SkyMilesNotesMember2020-12-310000027904dal:SkyMilesTermLoanMemberus-gaap:SecuredDebtMember2021-09-300000027904dal:SkyMilesTermLoanMemberus-gaap:SecuredDebtMember2020-12-310000027904us-gaap:SecuredDebtMemberdal:SeniorSecuredNotes2020Member2021-09-300000027904us-gaap:SecuredDebtMemberdal:SeniorSecuredNotes2020Member2020-12-310000027904us-gaap:SecuredDebtMemberdal:TermLoan2020Member2021-09-300000027904us-gaap:SecuredDebtMemberdal:TermLoan2020Member2020-12-310000027904dal:RevolvingCreditFacility2018Memberus-gaap:RevolvingCreditFacilityMember2021-09-300000027904dal:RevolvingCreditFacility2018Memberus-gaap:RevolvingCreditFacilityMember2020-12-310000027904us-gaap:SecuredDebtMemberdal:CertificatesMembersrt:MinimumMember2021-09-300000027904srt:MaximumMemberus-gaap:SecuredDebtMemberdal:CertificatesMember2021-09-300000027904us-gaap:SecuredDebtMemberdal:CertificatesMember2021-09-300000027904us-gaap:SecuredDebtMemberdal:CertificatesMember2020-12-310000027904us-gaap:SecuredDebtMemberdal:AircraftFinancingsMembersrt:MinimumMember2021-09-300000027904srt:MaximumMemberus-gaap:SecuredDebtMemberdal:AircraftFinancingsMember2021-09-300000027904us-gaap:SecuredDebtMemberdal:AircraftFinancingsMember2021-09-300000027904us-gaap:SecuredDebtMemberdal:AircraftFinancingsMember2020-12-310000027904us-gaap:BondsMemberdal:NYTDCSpecialFacilitiesRevenueBondsSeries2020Membersrt:MinimumMember2021-09-300000027904srt:MaximumMemberus-gaap:BondsMemberdal:NYTDCSpecialFacilitiesRevenueBondsSeries2020Member2021-09-300000027904us-gaap:BondsMemberdal:NYTDCSpecialFacilitiesRevenueBondsSeries2020Member2021-09-300000027904us-gaap:BondsMemberdal:NYTDCSpecialFacilitiesRevenueBondsSeries2020Member2020-12-310000027904us-gaap:BondsMemberdal:NYTDCSpecialFacilitiesRevenueBondsSeries2018Membersrt:MinimumMember2021-09-300000027904srt:MaximumMemberus-gaap:BondsMemberdal:NYTDCSpecialFacilitiesRevenueBondsSeries2018Member2021-09-300000027904us-gaap:BondsMemberdal:NYTDCSpecialFacilitiesRevenueBondsSeries2018Member2021-09-300000027904us-gaap:BondsMemberdal:NYTDCSpecialFacilitiesRevenueBondsSeries2018Member2020-12-310000027904dal:OtherFinancingsMemberdal:SecuredAndUnsecuredDebtMembersrt:MinimumMember2021-09-300000027904srt:MaximumMemberdal:OtherFinancingsMemberdal:SecuredAndUnsecuredDebtMember2021-09-300000027904dal:OtherFinancingsMemberdal:SecuredAndUnsecuredDebtMember2021-09-300000027904dal:OtherFinancingsMemberdal:SecuredAndUnsecuredDebtMember2020-12-310000027904dal:BankRevolvingCreditFacilitiesMemberus-gaap:RevolvingCreditFacilityMember2021-09-300000027904dal:BankRevolvingCreditFacilitiesMemberus-gaap:RevolvingCreditFacilityMember2020-12-310000027904dal:PayrollSupportProgram1Member2020-04-012020-12-310000027904us-gaap:UnsecuredDebtMemberdal:PayrollSupportProgram1Memberdal:PayrollSupportProgramLoan1Member2020-04-012020-12-310000027904dal:PayrollSupportProgram1Memberdal:DeltaCommonStockWarrants2020PSP1Member2021-09-300000027904dal:PayrollSupportProgram2Member2021-01-012021-06-300000027904us-gaap:UnsecuredDebtMemberdal:PayrollSupportProgramExtensionLoanMemberdal:PayrollSupportProgram2Member2021-01-012021-06-300000027904dal:DeltaCommonStockWarrants2021PSP2Memberdal:PayrollSupportProgram2Member2021-09-300000027904dal:PayrollSupportProgram3Member2021-04-012021-06-300000027904us-gaap:UnsecuredDebtMemberdal:PayrollSupportProgramLoan3Memberdal:PayrollSupportProgram3Member2021-04-012021-06-300000027904dal:DeltaCommonStockWarrants2021PSP3Memberdal:PayrollSupportProgram3Member2021-09-300000027904dal:PayrollSupportProgramMember2020-04-012021-09-300000027904us-gaap:UnsecuredDebtMemberdal:PayrollSupportProgramMemberdal:PayrollSupportProgramLoansMember2020-04-012021-09-300000027904dal:DeltaCommonStockWarrantsPSPMemberdal:PayrollSupportProgramMember2021-09-300000027904dal:DeltaCommonStockWarrants2021PSP2Memberdal:PayrollSupportProgram2Member2021-06-300000027904us-gaap:UnsecuredDebtMembersrt:ScenarioForecastMemberdal:PayrollSupportProgramExtensionLoanMemberdal:PayrollSupportProgram2Member2021-01-012025-12-310000027904us-gaap:UnsecuredDebtMembersrt:ScenarioForecastMemberdal:PayrollSupportProgramExtensionLoanMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberdal:PayrollSupportProgram2Member2026-01-012030-12-310000027904dal:DeltaCommonStockWarrants2021PSP2Memberdal:PayrollSupportProgram2Member2021-01-012021-06-300000027904us-gaap:UnsecuredDebtMemberdal:PayrollSupportProgramExtensionLoanMemberdal:PayrollSupportProgram2Member2021-06-300000027904dal:DeltaCommonStockWarrants2021PSP3Memberdal:PayrollSupportProgram3Member2021-06-300000027904us-gaap:UnsecuredDebtMembersrt:ScenarioForecastMemberdal:PayrollSupportProgramLoan3Memberdal:PayrollSupportProgram3Member2021-04-012026-03-310000027904us-gaap:UnsecuredDebtMembersrt:ScenarioForecastMemberus-gaap:SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMemberdal:PayrollSupportProgramLoan3Memberdal:PayrollSupportProgram3Member2026-04-012031-03-310000027904dal:DeltaCommonStockWarrants2021PSP3Memberdal:PayrollSupportProgram3Member2021-04-012021-06-300000027904us-gaap:UnsecuredDebtMemberdal:PayrollSupportProgramLoan3Memberdal:PayrollSupportProgram3Member2021-06-300000027904us-gaap:SecuredDebtMemberdal:TermLoan2020Member2021-01-012021-03-310000027904us-gaap:SecuredDebtMemberdal:CertificatesMember2021-04-012021-06-3000000279042021-07-012021-07-310000027904dal:SeniorSecuredNotes2025Memberus-gaap:SecuredDebtMember2021-07-310000027904dal:UnsecuredNotes2026Memberus-gaap:UnsecuredDebtMember2021-07-310000027904us-gaap:SecuredDebtMemberdal:SkyMilesNotes2025Member2021-07-310000027904dal:SeniorSecuredNotes2025Memberus-gaap:SecuredDebtMember2021-07-012021-07-310000027904dal:UnsecuredNotes2026Memberus-gaap:UnsecuredDebtMember2021-07-012021-07-310000027904dal:SecuredDebtAndUnsecuredDebtMemberdal:SeniorSecuredNotes2025AndUnsecuredNotes2026Member2021-07-012021-07-310000027904dal:CertificatesUnsecuredNotesAndSkyMilesTermLoanMemberdal:SecuredDebtAndUnsecuredDebtMember2021-07-012021-09-300000027904us-gaap:RevolvingCreditFacilityMember2021-09-300000027904us-gaap:UnsecuredDebtMemberdal:UnsecuredNotesMember2021-01-012021-09-300000027904us-gaap:UnsecuredDebtMemberdal:PayrollSupportProgramLoansMember2021-01-012021-09-300000027904us-gaap:SecuredDebtMemberdal:SkyMilesNotesMember2021-01-012021-09-300000027904dal:SkyMilesTermLoanMemberus-gaap:SecuredDebtMember2021-01-012021-09-300000027904us-gaap:SecuredDebtMemberdal:SeniorSecuredNotes2020Member2021-01-012021-09-300000027904dal:RevolvingCreditFacility2018Memberus-gaap:RevolvingCreditFacilityMember2021-01-012021-09-300000027904us-gaap:SecuredDebtMemberdal:CertificatesMember2021-01-012021-09-300000027904us-gaap:SecuredDebtMemberdal:AircraftFinancingsMember2021-01-012021-09-300000027904us-gaap:BondsMemberdal:NYTDCSpecialFacilitiesRevenueBondsSeries2020Member2021-01-012021-09-300000027904us-gaap:BondsMemberdal:NYTDCSpecialFacilitiesRevenueBondsSeries2018Member2021-01-012021-09-300000027904dal:OtherFinancingsMemberdal:SecuredAndUnsecuredDebtMember2021-01-012021-09-300000027904dal:BankRevolvingCreditFacilitiesMemberus-gaap:RevolvingCreditFacilityMember2021-01-012021-09-300000027904us-gaap:PensionPlansDefinedBenefitMember2021-07-012021-09-300000027904us-gaap:PensionPlansDefinedBenefitMember2020-07-012020-09-300000027904us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2021-07-012021-09-300000027904us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2020-07-012020-09-300000027904us-gaap:PensionPlansDefinedBenefitMember2021-01-012021-09-300000027904us-gaap:PensionPlansDefinedBenefitMember2020-01-012020-09-300000027904us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2021-01-012021-09-300000027904us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2020-01-012020-09-300000027904us-gaap:PensionPlansDefinedBenefitMember2021-04-012021-06-300000027904us-gaap:CapitalAdditionsMember2021-09-300000027904srt:MinimumMember2021-09-302021-09-300000027904srt:MaximumMember2021-09-302021-09-30dal:aircraft0000027904us-gaap:CapitalAdditionsMemberdal:A220100Member2021-09-300000027904dal:A220300Memberus-gaap:CapitalAdditionsMember2021-09-300000027904us-gaap:CapitalAdditionsMemberdal:A321200Member2021-09-300000027904us-gaap:CapitalAdditionsMemberdal:A321200neoMember2021-09-300000027904us-gaap:CapitalAdditionsMemberdal:A330900neoMember2021-09-300000027904dal:A350900Memberus-gaap:CapitalAdditionsMember2021-09-300000027904us-gaap:CapitalAdditionsMembersrt:B737900Member2021-09-300000027904us-gaap:CapitalAdditionsMemberdal:A321neoMember2021-04-012021-09-300000027904dal:A350900Memberus-gaap:CapitalAdditionsMember2021-04-012021-09-300000027904us-gaap:CapitalAdditionsMemberdal:A330900neoMember2021-04-012021-09-300000027904us-gaap:CapitalAdditionsMembersrt:B737900Member2021-04-012021-06-300000027904dal:A350900Memberus-gaap:CapitalAdditionsMember2021-04-012021-06-300000027904dal:A350900Memberus-gaap:CapitalAdditionsMember2021-07-012021-09-300000027904us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2020-12-310000027904dal:AOCIOtherMember2020-12-310000027904us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-01-012021-09-300000027904dal:AOCIOtherMember2021-01-012021-09-300000027904us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-09-300000027904dal:AOCIOtherMember2021-09-300000027904us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2019-12-310000027904dal:AOCIOtherMember2019-12-310000027904us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2020-01-012020-09-300000027904dal:AOCIOtherMember2020-01-012020-09-300000027904us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2020-09-300000027904dal:AOCIOtherMember2020-09-300000027904dal:ExchangedProductsMemberus-gaap:IntersegmentEliminationMember2021-07-012021-09-300000027904dal:ExchangedProductsMemberus-gaap:IntersegmentEliminationMember2021-01-012021-09-300000027904dal:ExchangedProductsMemberus-gaap:IntersegmentEliminationMember2020-07-012020-09-300000027904dal:ExchangedProductsMemberus-gaap:IntersegmentEliminationMember2020-01-012020-09-300000027904us-gaap:OperatingSegmentsMemberdal:AirlineMember2021-07-012021-09-300000027904dal:RefineryMemberus-gaap:OperatingSegmentsMember2021-07-012021-09-300000027904dal:SalestoairlinesegmentMemberus-gaap:IntersegmentEliminationMember2021-07-012021-09-300000027904dal:SalesofrefinedproductstothirdpartiesMemberus-gaap:IntersegmentEliminationMember2021-07-012021-09-300000027904us-gaap:IntersegmentEliminationMember2021-07-012021-09-300000027904us-gaap:OperatingSegmentsMemberdal:AirlineMember2021-09-300000027904dal:RefineryMemberus-gaap:OperatingSegmentsMember2021-09-300000027904us-gaap:IntersegmentEliminationMember2021-09-300000027904us-gaap:OperatingSegmentsMemberdal:AirlineMember2020-07-012020-09-300000027904dal:RefineryMemberus-gaap:OperatingSegmentsMember2020-07-012020-09-300000027904dal:SalestoairlinesegmentMemberus-gaap:IntersegmentEliminationMember2020-07-012020-09-300000027904dal:SalesofrefinedproductstothirdpartiesMemberus-gaap:IntersegmentEliminationMember2020-07-012020-09-300000027904us-gaap:IntersegmentEliminationMember2020-07-012020-09-300000027904us-gaap:OperatingSegmentsMemberdal:AirlineMember2020-09-300000027904dal:RefineryMemberus-gaap:OperatingSegmentsMember2020-09-300000027904us-gaap:IntersegmentEliminationMember2020-09-300000027904us-gaap:OperatingSegmentsMemberdal:AirlineMember2021-01-012021-09-300000027904dal:RefineryMemberus-gaap:OperatingSegmentsMember2021-01-012021-09-300000027904dal:SalestoairlinesegmentMemberus-gaap:IntersegmentEliminationMember2021-01-012021-09-300000027904dal:SalesofrefinedproductstothirdpartiesMemberus-gaap:IntersegmentEliminationMember2021-01-012021-09-300000027904us-gaap:IntersegmentEliminationMember2021-01-012021-09-300000027904us-gaap:OperatingSegmentsMemberdal:AirlineMember2020-01-012020-09-300000027904dal:RefineryMemberus-gaap:OperatingSegmentsMember2020-01-012020-09-300000027904dal:SalestoairlinesegmentMemberus-gaap:IntersegmentEliminationMember2020-01-012020-09-300000027904dal:SalesofrefinedproductstothirdpartiesMemberus-gaap:IntersegmentEliminationMember2020-01-012020-09-300000027904us-gaap:IntersegmentEliminationMember2020-01-012020-09-30

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-Q
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended September 30, 2021
Or
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
Commission File Number 001-5424
DAL-20210930_G1.JPG
DELTA AIR LINES, INC.
(Exact name of registrant as specified in its charter)
Delaware 58-0218548
(State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)
Post Office Box 20706
Atlanta, Georgia
30320-6001
(Address of principal executive offices) (Zip Code)
Registrant's telephone number, including area code: (404) 715-2600

Securities registered pursuant to Section 12(b) of the Act:
Title of each class Trading Symbol Name of each exchange on which registered
Common Stock, par value $0.0001 per share DAL New York Stock Exchange
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.
Yes No
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).
Yes No
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Large accelerated filer Accelerated filer  Non-accelerated filer 
Smaller reporting company Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
Yes No
Number of shares outstanding by each class of common stock, as of September 30, 2021:
Common Stock, $0.0001 par value - 640,013,818 shares outstanding
This document is also available through our website at http://ir.delta.com/.




Table of Contents
Page
1
2
3
3
4
5
6
7



Forward Looking Statements
Unless otherwise indicated or the context otherwise requires, the terms "Delta," "we," "us" and "our" refer to Delta Air Lines, Inc. and its subsidiaries.

FORWARD-LOOKING STATEMENTS

Statements in this Form 10-Q (or otherwise made by us or on our behalf) that are not historical facts, including statements about our estimates, expectations, beliefs, intentions, projections, goals, aspirations, commitments or strategies for the future, may be "forward-looking statements" as defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from historical experience or our present expectations. Known material risk factors applicable to Delta are described in "Item 1A. Risk Factors" of our Annual Report on Form 10-K for the fiscal year ended December 31, 2020 ("Form 10-K"), other than risks that could apply to any issuer or offering. All forward-looking statements speak only as of the date made, and we undertake no obligation to publicly update or revise any forward-looking statements to reflect events or circumstances that may arise after the date of this report except as required by law.

Delta Air Lines, Inc. September 2021 Form 10-Q                                 1


REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Stockholders of
Delta Air Lines, Inc.

Results of Review of Interim Financial Statements

We have reviewed the accompanying consolidated balance sheet of Delta Air Lines, Inc. (the Company) as of September 30, 2021, the related condensed consolidated statements of operations and comprehensive income/(loss) and consolidated statements of stockholders' equity for the three-month and nine-month periods ended September 30, 2021 and 2020, the condensed consolidated statements of cash flows for the nine-month periods ended September 30, 2021 and 2020 and the related notes (collectively referred to as the "condensed consolidated interim financial statements"). Based on our reviews, we are not aware of any material modifications that should be made to the condensed consolidated interim financial statements for them to be in conformity with U.S. generally accepted accounting principles.

We have previously audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated balance sheet of the Company as of December 31, 2020, the related consolidated statements of operations, comprehensive loss, cash flows, and stockholders' equity for the year then ended, and the related notes (not presented herein); and in our report dated February 12, 2021, we expressed an unqualified audit opinion on those consolidated financial statements. In our opinion, the information set forth in the accompanying consolidated balance sheet as of December 31, 2020, is fairly stated, in all material respects, in relation to the consolidated balance sheet from which it has been derived.

Basis for Review Results

These financial statements are the responsibility of the Company's management. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the SEC and the PCAOB. We conducted our review in accordance with the standards of the PCAOB. A review of interim financial statements consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the PCAOB, the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.


/s/ Ernst & Young LLP
Atlanta, Georgia
October 13, 2021

Delta Air Lines, Inc. September 2021 Form 10-Q                                 2

Financial Statements

DELTA AIR LINES, INC.
Consolidated Balance Sheets
(Unaudited)
(in millions, except share data) September 30,
2021
December 31,
2020
ASSETS
Current Assets:
Cash and cash equivalents $ 8,785  $ 8,307 
Short-term investments 4,417  5,789 
Accounts receivable, net of an allowance for uncollectible accounts of $78 and $89
2,183  1,396 
Fuel inventory 641  377 
Expendable parts and supplies inventories, net of an allowance for obsolescence of $174 and $188
371  355 
Prepaid expenses and other 1,074  1,180 
Total current assets 17,471  17,404 
Noncurrent Assets:
Property and equipment, net of accumulated depreciation and amortization of $18,693 and $17,511
27,816  26,529 
Operating lease right-of-use assets 5,827  5,733 
Goodwill 9,753  9,753 
Identifiable intangibles, net of accumulated amortization of $890 and $883
6,004  6,011 
Cash restricted for airport construction 713  1,556 
Equity investments 1,919  1,665 
Deferred income taxes, net 1,813  1,988 
Other noncurrent assets 1,467  1,357 
Total noncurrent assets 55,312  54,592 
Total assets $ 72,783  $ 71,996 
LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
Current maturities of debt and finance leases $ 2,296  $ 1,732 
Current maturities of operating leases 636  678 
Air traffic liability 6,246  4,044 
Accounts payable 4,017  2,840 
Accrued salaries and related benefits 2,198  2,086 
Loyalty program deferred revenue 2,619  1,777 
Fuel card obligation 1,100  1,100 
Other accrued liabilities 1,812  1,670 
Total current liabilities 20,924  15,927 
Noncurrent Liabilities:
Debt and finance leases 25,523  27,425 
Noncurrent air traffic liability 130  500 
Pension, postretirement and related benefits 8,408  10,630 
Loyalty program deferred revenue 4,837  5,405 
Noncurrent operating leases 5,742  5,713 
Other noncurrent liabilities 4,613  4,862 
Total noncurrent liabilities 49,253  54,535 
Commitments and Contingencies
Stockholders' Equity:
Common stock at $0.0001 par value; 1,500,000,000 shares authorized, 649,758,099 and 647,352,203
shares issued
—  — 
Additional paid-in capital 11,428  11,259 
Retained earnings/(accumulated deficit) 259  (428)
Accumulated other comprehensive loss (8,800) (9,038)
Treasury stock, at cost, 9,744,281 and 9,169,683 shares
(281) (259)
Total stockholders' equity 2,606  1,534 
Total liabilities and stockholders' equity $ 72,783  $ 71,996 
The accompanying notes are an integral part of these Condensed Consolidated Financial Statements.

Delta Air Lines, Inc. September 2021 Form 10-Q                                 3

Financial Statements
DELTA AIR LINES, INC.
Condensed Consolidated Statements of Operations and Comprehensive Income/(Loss)
(Unaudited)
Three Months Ended September 30,
Nine Months Ended September 30,
(in millions, except per share data) 2021 2020 2021 2020
Operating Revenue:
Passenger $ 7,191  $ 1,938  $ 15,278  $ 10,185 
Cargo 262  142  728  403 
Other 1,701  982  4,423  2,534 
  Total operating revenue 9,154  3,062  20,429  13,122 
Operating Expense:
Salaries and related costs 2,566  2,012  7,096  7,000 
Aircraft fuel and related taxes 1,552  486  4,056  2,453 
Ancillary businesses and refinery 1,079  561  2,724  1,181 
Contracted services 634  419  1,723  1,536 
Depreciation and amortization 501  545  1,494  1,813 
Landing fees and other rents 524  458  1,477  1,430 
Regional carrier expense 453  290  1,258  1,204 
Aircraft maintenance materials and outside repairs 433  106  1,014  618 
Passenger commissions and other selling expenses 308  100  640  548 
Passenger service 226  92  520  456 
Aircraft rent 105  99  313  295 
Restructuring charges 33  5,345  (3) 7,798 
Government grant recognition (1,822) (1,315) (4,512) (2,595)
Other 357  250  1,006  996 
Total operating expense 6,949  9,448  18,806  24,733 
Operating Income/(Loss) 2,205  (6,386) 1,623  (11,611)
Non-Operating Expense:
Interest expense, net (314) (291) (1,014) (564)
Impairments and equity method losses (49) (114) (102) (2,432)
Gain/(loss) on investments, net (223) (95) 251  (199)
Loss on extinguishment of debt (183) —  (266) — 
Miscellaneous, net 96  27  301  327 
Total non-operating expense, net (673) (473) (830) (2,868)
Income/(Loss) Before Income Taxes 1,532  (6,859) 793  (14,479)
Income Tax (Provision)/Benefit (320) 1,480  (105) 2,849 
Net Income/(Loss) $ 1,212  $ (5,379) $ 688  $ (11,630)
Basic Earnings/(Loss) Per Share $ 1.90  $ (8.47) $ 1.08  $ (18.30)
Diluted Earnings/(Loss) Per Share $ 1.89  $ (8.47) $ 1.07  $ (18.30)
Cash Dividends Declared Per Share $ —  $ —  $ —  $ 0.40 
Comprehensive Income/(Loss) $ 1,294  $ (5,381) $ 926  $ (11,580)
The accompanying notes are an integral part of these Condensed Consolidated Financial Statements.

Delta Air Lines, Inc. September 2021 Form 10-Q                                 4

Financial Statements
DELTA AIR LINES, INC.
Condensed Consolidated Statements of Cash Flows
(Unaudited)
Nine Months Ended September 30,
(in millions) 2021 2020
Net Cash Provided by/(Used in) Operating Activities $ 2,708  $ (2,507)
Cash Flows from Investing Activities:
Property and equipment additions:
Flight equipment, including advance payments (961) (594)
Ground property and equipment, including technology (1,068) (757)
Proceeds from sale-leaseback transactions —  465 
Purchase of short-term investments (10,799) (8,700)
Redemption of short-term investments 12,158  3,654 
Purchase of equity investments —  (2,099)
Other, net 252  (159)
Net cash used in investing activities (418) (8,190)
Cash Flows from Financing Activities:
Proceeds from short-term obligations —  3,261 
Proceeds from long-term obligations 1,902  22,481 
Proceeds from sale-leaseback transactions —  2,306 
Payments on debt and finance lease obligations (4,685) (2,318)
Repurchase of common stock —  (344)
Cash dividends —  (260)
Fuel card obligation —  364 
Other, net 98  (177)
Net cash (used in)/provided by financing activities (2,685) 25,313 
Net (Decrease)/Increase in Cash, Cash Equivalents and Restricted Cash Equivalents (395) 14,616 
Cash, cash equivalents and restricted cash equivalents at beginning of period 10,055  3,730 
Cash, cash equivalents and restricted cash equivalents at end of period $ 9,660  $ 18,346 
Non-Cash Transactions:
Flight and ground equipment acquired under finance leases $ 904  $ 347 
Right-of-use assets acquired under operating leases 536  1,062 
Other financings 240  115 
The following table provides a reconciliation of cash, cash equivalents and restricted cash equivalents reported within the Consolidated Balance Sheets to the total of the same such amounts shown above:
September 30,
(in millions) 2021 2020
Current assets:
Cash and cash equivalents $ 8,785  $ 16,477 
Restricted cash included in prepaid expenses and other 162  189 
Noncurrent assets:
Cash restricted for airport construction 713  1,680 
Total cash, cash equivalents and restricted cash equivalents $ 9,660  $ 18,346 
The accompanying notes are an integral part of these Condensed Consolidated Financial Statements.
Delta Air Lines, Inc. September 2021 Form 10-Q                                 5

Financial Statements
DELTA AIR LINES, INC.
Consolidated Statements of Stockholders' Equity
(Unaudited)
Common Stock Additional
Paid-In Capital
Retained Earnings / (Accumulated Deficit) Accumulated
Other
Comprehensive Loss
Treasury Stock
(in millions, except per share data) Shares Amount Shares Amount Total
Balance at December 31, 2020
647  $ —  $ 11,259  $ (428) $ (9,038) $ (259) $ 1,534 
Net loss —  —  —  (1,177) —  —  —  (1,177)
Other comprehensive income —  —  —  —  78  —  —  78 
Common stock issued for employee equity awards(1)
—  23  —  —  (20)
Government grant warrant issuance —  —  44  —  —  —  —  44 
Balance at March 31, 2021
649  $ —  $ 11,326  $ (1,605) $ (8,960) 10  $ (279) $ 482 
Net income —  —  —  652  —  —  —  652 
Other comprehensive income —  —  —  —  78  —  —  78 
Common stock issued for employee equity awards(1)
—  28  —  —  —  (1) 27 
Government grant warrant issuance —  —  42  —  —  —  —  42 
Balance at June 30, 2021
650  $ —  $ 11,396  $ (953) $ (8,882) 10  $ (280) $ 1,281 
Net income —  —  —  1,212  —  —  —  1,212 
Other comprehensive income —  —  —  —  82  —  —  82 
Common stock issued for employee equity awards(1)
—  —  32  —  —  —  (1) 31 
Balance at September 30, 2021
650  $ —  $ 11,428  $ 259  $ (8,800) 10  $ (281) $ 2,606 

(1)Treasury shares were withheld for payment of taxes, at a weighted average price per share of $38.35, $46.21 and $43.48 in the March 2021 quarter, June 2021 quarter and September 2021 quarter, respectively.


Common Stock Additional
Paid-In Capital
 Retained
Earnings
Accumulated
Other
Comprehensive Loss
Treasury Stock
(in millions, except per share data) Shares Amount Shares Amount Total
Balance at December 31, 2019
652  $ —  $ 11,129  $ 12,454  $ (7,989) $ (236) $ 15,358 
Net loss —  —  —  (534) —  —  —  (534)
Dividends declared —  —  —  (257) —  —  —  (257)
Other comprehensive income —  —  —  —  91  —  —  91 
Common stock issued for employee equity awards(1)
—  29  —  —  (34) (5)
Stock purchased and retired (6) —  (104) (240) —  —  —  (344)
Balance at March 31, 2020
647  $ —  $ 11,054  $ 11,423  $ (7,898) 10  $ (270) $ 14,309 
Net loss —  —  —  (5,717) —  —  —  (5,717)
Other comprehensive loss —  —  —  —  (39) —  —  (39)
Common stock issued for employee equity awards(1)
—  —  38  —  —  —  (1) 37 
Government grant warrant issuance —  —  100  —  —  —  —  100 
Balance at June 30, 2020
647  $ —  $ 11,192  $ 5,706  $ (7,937) 10  $ (271) $ 8,690 
Net loss —  —  —  (5,379) —  —  —  (5,379)
Other comprehensive loss —  —  —  —  (2) —  —  (2)
Common stock issued for employee equity awards(1)
—  —  35  —  —  —  (1) 34 
Government grant warrant issuance —  —  14  —  —  —  —  14 
Balance at September 30, 2020
647  $ —  $ 11,241  $ 327  $ (7,939) 10  $ (272) $ 3,357 

(1)Treasury shares were withheld for payment of taxes, at a weighted average price per share of $56.48, $25.56 and $28.29 in the March 2020 quarter, June 2020 quarter and September 2020 quarter, respectively.

The accompanying notes are an integral part of these Condensed Consolidated Financial Statements.
Delta Air Lines, Inc. September 2021 Form 10-Q                                 6

Notes to the Consolidated Financial Statements
DELTA AIR LINES, INC.
Notes to the Condensed Consolidated Financial Statements
(Unaudited)

NOTE 1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The accompanying unaudited Condensed Consolidated Financial Statements include the accounts of Delta Air Lines, Inc. and our consolidated subsidiaries and have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") for interim financial information. Consistent with these requirements, this Form 10-Q does not include all the information required by GAAP for complete financial statements. As a result, this Form 10-Q should be read in conjunction with the Consolidated Financial Statements and accompanying Notes in our Form 10-K for the year ended December 31, 2020.

Management believes the accompanying unaudited Condensed Consolidated Financial Statements reflect all adjustments, including normal recurring items, considered necessary for a fair statement of results for the interim periods presented.

Due to impacts from the COVID-19 pandemic and the uncertain pace of recovery, seasonal variations in the demand for air travel, the volatility of aircraft fuel prices and other factors, operating results for the three and nine months ended September 30, 2021 are not necessarily indicative of operating results for the entire year.

We reclassified certain prior period amounts to conform to the current period presentation. Unless otherwise noted, all amounts disclosed are stated before consideration of income taxes.

Regional Carrier Expense

We previously allocated certain costs (such as landing fees and other rents, salaries and related costs and contracted services) to regional carrier expense in our Condensed Consolidated Statements of Operations and Comprehensive Income/(Loss) ("income statement") based on relevant statistics (such as passenger counts). Beginning in the March 2021 quarter we ceased performing this allocation and have reclassified the costs presented in prior periods to align with this presentation. This reclassification better reflects the nature of, and how management views, these regional carrier related expenses. This allocation was approximately $900 million in 2020, including approximately $200 million in the September 2020 quarter, and $1.4 billion in 2019, including approximately $360 million in the September 2019 quarter. The remaining amounts in regional carrier expense represent the accrual of payments to our regional carriers under capacity purchase agreements and the expenses of our wholly owned regional subsidiary, Endeavor Air, Inc.


Delta Air Lines, Inc. September 2021 Form 10-Q                                 7

Notes to the Consolidated Financial Statements
NOTE 2. REVENUE RECOGNITION

Passenger Revenue
Three Months Ended September 30,
Nine Months Ended September 30,
(in millions) 2021 2020 2021 2020
Ticket $ 6,237  $ 1,634  $ 13,067  $ 8,712 
Loyalty travel awards 544  143  1,213  731 
Travel-related services 410  161  998  742 
Total passenger revenue $ 7,191  $ 1,938  $ 15,278  $ 10,185 

We recognized approximately $1.8 billion and $3.0 billion in passenger revenue during the nine months ended September 30, 2021 and 2020, respectively, that had been recorded in our air traffic liability balance at the beginning of those periods.

In the March 2021 quarter, we announced the extension of the validity of all passenger tickets and travel credits purchased or expiring in 2021 to December 31, 2022. Additionally, with the exception of Basic Economy tickets, we eliminated change fees for tickets originating in North America and waived change fees for those originating outside of North America. We also implemented a waiver that allows Basic Economy tickets purchased for travel in 2021, which are normally non-changeable, to be changed without paying a fee regardless of origin or destination.

We estimate the value of tickets that will expire unused (“breakage”) and recognize revenue at the scheduled flight date. Our breakage estimates are primarily based on historical experience, ticket contract terms and customers’ travel behavior. Given the change in ticket validity terms made in 2021 and the uncertainty caused by the COVID-19 pandemic, our estimates of revenue that will be recognized from the air traffic liability for unused tickets may vary in future periods.

Other Revenue
Three Months Ended September 30,
Nine Months Ended September 30,
(in millions) 2021 2020 2021 2020
Refinery $ 872  $ 417  $ 2,189  $ 709 
Loyalty program 453  343  1,260  1,086 
Ancillary businesses 215  155  586  476 
Miscellaneous 161  67  388  263 
Total other revenue $ 1,701  $ 982  $ 4,423  $ 2,534 

Refinery. This represents refinery sales to third parties, which are at or near cost; accordingly, the margin on these sales is de minimis.

Loyalty Program. Our SkyMiles loyalty program allows customers to earn mileage credits ("miles") by flying on Delta, Delta Connection and other airlines that participate in the loyalty program. Customers can also earn miles through participating companies, such as credit card companies, hotels, car rental agencies and ridesharing companies, who purchase miles from us. Our most significant contract to sell miles relates to our co-brand credit card relationship with American Express. During the nine months ended September 30, 2021 and 2020, total cash sales from marketing agreements related to our loyalty program were $2.9 billion and $2.2 billion, respectively, which are allocated to travel and other performance obligations.

Ancillary Businesses. Ancillary businesses includes aircraft maintenance services we provide to third parties and our vacation wholesale operations.
Delta Air Lines, Inc. September 2021 Form 10-Q                                 8

Notes to the Consolidated Financial Statements
Current Activity of the Loyalty Program. Miles are combined in one homogeneous pool and are not separately identifiable. Therefore, revenue is comprised of miles that were part of the loyalty program deferred revenue balance at the beginning of the period as well as miles that were issued during the period.

The table below presents the activity of the current and noncurrent loyalty program deferred revenue and includes miles earned through travel and miles sold to participating companies, which are primarily through marketing agreements.

Loyalty program activity
(in millions) 2021 2020
Balance at January 1 $ 7,182  $ 6,728 
Miles earned 1,541  1,132 
Miles redeemed for air travel (1,213) (731)
Miles redeemed for non-air travel and other (54) (40)
Balance at September 30
$ 7,456  $ 7,089 

The timing of mile redemptions can vary widely; however, the majority of miles have historically been redeemed within two years of being earned.

Revenue by Geographic Region

Operating revenue for the airline segment is recognized in a specific geographic region based on the origin, flight path and destination of each flight segment. A significant portion of the refinery segment's revenues typically consists of fuel sales to support the airline, which is eliminated in the Condensed Consolidated Financial Statements. The remaining operating revenue for the refinery segment is included in the domestic region. Our passenger and operating revenue by geographic region is summarized in the following tables:

Passenger revenue by geographic region
Passenger Revenue
Three Months Ended September 30,
Nine Months Ended September 30,
(in millions) 2021 2020 2021 2020
Domestic $ 5,759  $ 1,647  $ 12,517  $ 7,812 
Atlantic 730  132  1,160  1,014 
Latin America 564  97  1,313  879 
Pacific 138  62  288  480 
Total $ 7,191  $ 1,938  $ 15,278  $ 10,185 

Operating revenue by geographic region
Operating Revenue
Three Months Ended September 30,
Nine Months Ended September 30,
(in millions) 2021 2020 2021 2020
Domestic $ 7,311  $ 2,585  $ 16,572  $ 10,116 
Atlantic 954  240  1,688  1,353 
Latin America 653  126  1,620  1,015 
Pacific 236  111  549  638 
Total $ 9,154  $ 3,062  $ 20,429  $ 13,122 



Delta Air Lines, Inc. September 2021 Form 10-Q                                 9

Notes to the Consolidated Financial Statements
NOTE 3. FAIR VALUE MEASUREMENTS

Assets Measured at Fair Value on a Recurring Basis
(in millions) September 30,
2021
Level 1 Level 2 Level 3
Cash equivalents $ 6,098  $ 6,098  $ —  $ — 
Restricted cash equivalents 874  874  —  — 
Short-term investments 4,417  2,291  2,126  — 
Long-term investments 1,659  1,525  37  97 
(in millions) December 31,
2020
Level 1 Level 2 Level 3
Cash equivalents $ 5,755  $ 5,755  $ —  $ — 
Restricted cash equivalents 1,747  1,747  —  — 
Short-term investments 5,789  3,919  1,870  — 
Long-term investments 1,417  948  38  431 

Cash Equivalents and Restricted Cash Equivalents. Cash equivalents generally consist of money market funds. Restricted cash equivalents are recorded in prepaid expenses and other and cash restricted for airport construction on our Consolidated Balance Sheet ("balance sheet"). Restricted cash equivalents generally consist of money market funds, time deposits, commercial paper and negotiable certificates of deposit, which primarily relate to proceeds from debt issued to finance, among other things, a portion of the construction costs for our new terminal facilities at New York's LaGuardia Airport. The fair value of these cash equivalents is based on a market approach using prices generated by market transactions involving identical or comparable assets.

Short-Term Investments. Short-term investments consist of U.S. government and agency securities. The fair values of these investments are based on a market approach using industry standard valuation techniques that incorporate observable inputs such as quoted market prices, interest rates, benchmark curves, credit ratings of the security and other observable information.

As of September 30, 2021, the estimated fair value of our short-term investments was $4.4 billion. Of these investments, $3.7 billion are expected to mature in one year or less, with the remainder maturing by the first half of 2023. Investments with maturities beyond one year when purchased are classified as short-term investments if they are expected to be available to support our short-term liquidity needs.

Long-Term Investments. Our long-term investments measured at fair value primarily consist of equity investments, which are valued based on market prices or other observable transactions and inputs, and are recorded in equity investments on our balance sheet. In the September 2021 quarter, Wheels Up Experience Inc. ("Wheels Up") became publicly traded and, as of September 30, 2021, our investment in Wheels Up is classified as Level 1. In the June 2021 quarter, Clear Secure, Inc. ("CLEAR") became publicly traded and our investment is classified as Level 1. In addition, our equity investments in private companies are classified as Level 3 in the fair value hierarchy as their equity is not traded on a public exchange and our valuations incorporate certain unobservable inputs, including non-public equity issuances and forecasts provided by our investees. Fair value measurement using unobservable inputs is inherently uncertain, and a change in significant inputs could result in different fair values. See Note 4, "Investments," for further information on our equity investments.


NOTE 4. INVESTMENTS

We have developed strategic relationships with a number of airlines and airline services companies through joint ventures and other forms of cooperation and support, including equity investments. Our equity investments reinforce our commitment to these relationships and generally enhance our ability to offer input to the investee on strategic issues and direction, in some cases through representation on the board of directors.

Changes in the valuation of investments accounted for at fair value are recorded in gain/(loss) on investments, net in our income statement within non-operating expense and are driven by changes in stock prices, other valuation techniques for investments in companies without publicly-traded shares and foreign currency fluctuations.

Delta Air Lines, Inc. September 2021 Form 10-Q                                 10

Notes to the Consolidated Financial Statements
Our share of Unifi Aviation's financial results is recorded in contracted services in our income statement as this entity is integral to the operations of our business by providing services at our airport locations, while our share of other equity method investees' financial results is recorded in impairments and equity method losses in our income statement under non-operating expense. If an investment accounted for under the equity method experiences a loss in value that is determined to be other than temporary, we will reduce our carrying value of the investment to fair value and record the loss in impairments and equity method losses in our income statement.

Equity investments ownership interest and carrying value
Accounting Treatment Ownership Interest Carrying Value
(in millions) September 30, 2021 December 31, 2020 September 30, 2021 December 31, 2020
Wheels Up Fair Value 21  % 24  % $ 343  $ 210 
Hanjin-KAL Fair Value 13  % 13  % 456  512 
Air France-KLM Fair Value % % 184  235 
China Eastern Fair Value % % 179  201 
CLEAR Fair Value % % 340  120 
Unifi Aviation Equity Method 49  % 49  % 167  154 
Other investments Various 250  233 
Equity investments $ 1,919  $ 1,665 

Wheels Up. In July 2021, Wheels Up became a publicly-traded company through a merger with Aspirational Consumer Lifestyle Corp ("Aspirational"). Aspirational subsequently changed its name to Wheels Up Experience Inc. and its common stock trades on the New York Stock Exchange under the symbol UP. We account for our investment under the fair value option and are using the stock price to recognize fair value adjustments beginning in the September 2021 quarter.

CLEAR. In the June 2021 quarter, CLEAR completed an initial public offering of Class A common stock, which trades on the New York Stock Exchange under the symbol YOU. We own shares of Alclear Holdings, LLC, which are convertible on a one-to-one basis for the Class A common stock of CLEAR. Our 6% ownership interest is determined on a fully exchanged and converted basis. We account for our investment under the fair value method and are using the stock price to recognize fair value adjustments.

Other Investments. This category includes various investments that are accounted for at fair value or under the equity method, depending on our ownership interest and the level of influence conveyed by our investment. Included therein are our investments in Grupo Aeroméxico, LATAM Airlines Group S.A. ("LATAM") and Virgin Atlantic, all of which are undergoing in-court or out-of-court restructurings, and the carrying values of these investments have been reduced to and remain zero as of September 30, 2021. In order to support our relationships with these carriers, we have provided them with strategic and operational assistance through their restructurings. As of September 30, 2021, we had notes payable of approximately $525 million, which were recorded in current maturities of debt and finance leases, and receivables from those carriers recorded within other noncurrent assets, including $185 million related to our option to purchase certain obligations of a lender under Grupo Aeroméxico's restructuring process and that lender’s right to require us to purchase that portion of its obligations.

GOL. During 2020, we loaned GOL Linhas Aéreas Inteligentes, the parent company of GOL Linhas Aéreas (operating as GOL), $250 million to be used exclusively to repay the term loan we had previously guaranteed. In the June 2021 quarter, GOL repaid the outstanding balance of this loan in full.


Delta Air Lines, Inc. September 2021 Form 10-Q                                 11

Notes to the Consolidated Financial Statements
NOTE 5. DEBT

Summary of outstanding debt by category
Maturity Interest Rate(s) Per Annum at September 30, December 31,
(in millions) Dates September 30, 2021 2021 2020
Unsecured notes 2022 to 2029 2.90% to 7.38% $ 4,460  $ 5,350 
Unsecured Payroll Support Program Loans 2030 to 2031 1.00% 3,496  1,648 
Financing arrangements secured by SkyMiles assets:
SkyMiles Notes(1)
2023 to 2028 4.50% and 4.75% 6,000  6,000 
SkyMiles Term Loan(1)(2)
2023 to 2027 4.75% 2,865  3,000 
Financing arrangements secured by slots, gates and/or routes:
2020 Senior Secured Notes 2025 7.00% 2,823  3,500 
2020 Term Loan n/a n/a —  1,493 
2018 Revolving Credit Facility(2)
2022 to 2023 Undrawn —  — 
Financing arrangements secured by aircraft:
Certificates(1)
2021 to 2028 2.00% to 8.00% 1,990  2,633 
Notes(1)(2)
2021 to 2033 0.70% to 5.75% 1,208  1,284 
NYTDC Special Facilities Revenue Bonds, Series 2020(1)
2026 to 2045 4.00% to 5.00% 1,511  1,511 
NYTDC Special Facilities Revenue Bonds, Series 2018(1)
2022 to 2036 4.00% to 5.00% 1,383  1,383 
Other financings(1)(2)
2021 to 2030 2.25% to 8.00% 592  412 
Other revolving credit facilities(2)
2022 Undrawn —  — 
Total secured and unsecured debt 26,328  28,214 
Unamortized (discount)/premium and debt issue cost, net and other (227) (240)
Total debt 26,101  27,974 
Less: current maturities (2,024) (1,443)
Total long-term debt $ 24,077  $ 26,531 
(1)Due in installments.
(2)Certain financings are comprised of variable rate debt. All variable rates are equal to LIBOR (generally subject to a floor) or another index rate plus a specified margin.

Unsecured Payroll Support Program Extension Loans

A summary of the amounts received and warrants issued under the initial payroll support program under the Coronavirus Aid, Relief and Economic Security Act ("CARES Act") and the program extensions is set forth in the following table:

Summary of payroll support program activity
(in millions) Total Grant Loan Number of Warrants
Percentage of Outstanding Shares at September 30, 2021
Payroll Support Program (PSP1) $ 5,594  $ 3,946  $ 1,648  6.8  1.1  %
Payroll Support Program Extension (PSP2) 3,290  2,333  957  2.4  0.4  %
Payroll Support Program 3 (PSP3) 3,069  2,178  891  1.9  0.3  %
Total $ 11,953  $ 8,457  $ 3,496  11.1  1.8  %

Grants received were recognized in government grant recognition in our income statement over the periods that the funds were intended to compensate. The PSP1 grant was recognized during 2020 and grants received from PSP2 and PSP3 have been fully recognized as of the end of September 2021.


Delta Air Lines, Inc. September 2021 Form 10-Q                                 12

Notes to the Consolidated Financial Statements
Payroll Support Program Extension (PSP2). The Consolidated Appropriations Act, 2021 was enacted on December 27, 2020, and included an extension of the payroll support program created under the CARES Act providing an additional $15 billion in grants and loans to the airline industry. In January 2021, we entered into a payroll support program extension agreement with the U.S. Department of the Treasury. During the six months ended June 30, 2021, we received a total of $3.3 billion in payroll support payments under this extension agreement, which we were required to use exclusively for the payment of employee wages, salaries and benefits and were conditioned on our agreement to refrain from conducting involuntary employee layoffs or furloughs from the date of the extension agreement through March 2021. Other conditions include prohibitions on share repurchases and dividends through March 2022 and certain limitations on executive compensation until October 2022. The Department of Transportation also has the authority until March 1, 2022 to require airlines that received payroll support program funds to maintain scheduled air service deemed necessary to any point served by the airline before March 1, 2020.

These support payments consisted of $2.3 billion in a grant and $957 million in an unsecured 10-year low interest loan. In return, we entered into a promissory note for the loan and issued warrants to the U.S. Department of the Treasury to acquire approximately 2.4 million shares of Delta common stock. The loan bears interest at an annual rate of 1.00% for the first five years and the applicable Secured Overnight Financing Rate ("SOFR") plus 2.00% in the final five years. The warrants have an initial exercise price of $39.73 per share, subject to adjustment in certain cases, and a five-year term. We have recorded the value of the promissory note and warrants on a relative fair value basis as $905 million of noncurrent debt, net of discount, and $52 million in additional paid in capital, respectively.

Payroll Support Program 3 (PSP3). The American Rescue Plan Act of 2021 was enacted on March 11, 2021, and included a further extension of the payroll support program providing an additional $14 billion in grants and loans to the airline industry. In April 2021, we entered into a Payroll Support Program 3 Agreement with the U.S. Department of the Treasury. During the June 2021 quarter, we received a total of $3.1 billion in payroll support payments under this agreement, which we were required to use exclusively for the payment of employee wages, salaries and benefits and was conditioned on our agreement to refrain from conducting involuntary employee layoffs or furloughs from the date of the agreement through September 30, 2021 or the date on which we have expended all of the payroll support, whichever is later. Other conditions include prohibitions on share repurchases and dividends through September 30, 2022 and certain limitations on executive compensation until April 1, 2023.

These support payments consisted of $2.2 billion in a grant and $891 million in an unsecured 10-year low interest loan. In return, we entered into a promissory note for the loan and issued warrants to the U.S. Department of the Treasury to acquire approximately 1.9 million shares of Delta common stock. The loan bears interest at an annual rate of 1.00% for the first five years and the applicable SOFR plus 2.00% in the final five years. The warrants have an initial exercise price of $47.80 per share, subject to adjustment in certain cases, and a five-year term. We have recorded the value of the promissory note and warrants on a relative fair value basis as $857 million of noncurrent debt, net of discount, and $34 million in additional paid in capital, respectively.

2020 Term Loan

In 2020 we entered into a $1.5 billion term loan secured by certain slots, gates and routes. In the March 2021 quarter, we repaid in full the term loan, which was scheduled to mature in April 2023, and incurred a $56 million loss on extinguishment of debt, which is recorded in loss on extinguishment of debt in non-operating expense in our income statement.

Enhanced Equipment Trust Certificates ("EETCs") Prepayments

In the June 2021 quarter, we repaid in full approximately $450 million of various EETCs which were scheduled to mature between 2022 and 2023, and incurred a $26 million loss on extinguishment of debt, which is recorded in loss on extinguishment of debt in non-operating expense in our income statement.

Delta Air Lines, Inc. September 2021 Form 10-Q                                 13

Notes to the Consolidated Financial Statements
Early Settlement of Outstanding Notes

In July 2021, we completed a cash tender offer for an aggregate purchase price of $1.0 billion, excluding accrued and unpaid interest, of our outstanding 7.0% Senior Secured Notes due 2025 (the "2025 Notes"), 7.375% Notes due 2026 (the "2026 Notes") and 4.5% Senior Secured Notes due 2025 (the "2025 SkyMiles Notes"). As a result of the tender offer, we purchased 2025 Notes, included as 2020 Senior Secured Notes in the table above, with principal amount of $677 million for approximately $800 million and 2026 Notes, included in Unsecured Notes in the table above, with principal amount of $169 million for approximately $200 million. We did not purchase any of the 2025 SkyMiles Notes under the tender offer. In addition to the early settlement of the principal amount of the purchased notes, we recorded a loss of $166 million on extinguishment of debt in non-operating expense in our income statement.

Throughout the September 2021 quarter we also repurchased $262 million of various secured certificates, unsecured notes and a portion of the SkyMiles Term Loan on the open market. These payments resulted in a $17 million loss on extinguishment of debt.

Availability Under Revolving Facilities

As of September 30, 2021, we had approximately $2.6 billion undrawn and available under our revolving credit facilities. In addition, we had outstanding letters of credit as of September 30, 2021, including approximately $300 million that reduced the availability under our revolving credit facilities and approximately $300 million that did not affect the availability of our revolving credit facilities.

Fair Value of Debt

Market risk associated with our fixed- and variable-rate debt relates to the potential reduction in fair value and negative impact to future earnings, respectively, from an increase in interest rates. The fair value of debt, shown below, is principally based on reported market values, recently completed market transactions and estimates based on interest rates, maturities, credit risk and where applicable, underlying collateral. Debt is primarily classified as Level 2 within the fair value hierarchy.
    
Fair value of outstanding debt
(in millions) September 30,
2021
December 31,
2020
Net carrying amount $ 26,101  $ 27,974 
Fair value $ 28,300  $ 29,800 

Covenants

Our debt agreements contain various affirmative, negative and financial covenants. We were in compliance with the covenants in our debt agreements at September 30, 2021.


Delta Air Lines, Inc. September 2021 Form 10-Q                                 14

Notes to the Consolidated Financial Statements
NOTE 6. EMPLOYEE BENEFIT PLANS

Employee benefit plans net periodic (benefit) cost
Pension Benefits Other Postretirement and Postemployment Benefits
(in millions) 2021 2020 2021 2020
Three Months Ended September 30,
Service cost $ —  $ —  $ 21  $ 24 
Interest cost 146  175  29  30 
Expected return on plan assets (381) (343) (9) (11)
Amortization of prior service credit —  —  (2) (2)
Recognized net actuarial loss 88  74  15  10 
Special termination benefits —  —  —  1,260 
Settlements 30  —  — 
Net periodic (benefit) cost $ (146) $ (64) $ 54  $ 1,311 
Nine Months Ended September 30,
Service cost $ —  $ —  $ 64  $ 72 
Interest cost 437  526  88  86 
Expected return on plan assets (1,142) (1,030) (26) (33)
Amortization of prior service credit —  —  (5) (7)
Recognized net actuarial loss 266  223  42  32 
Special termination benefits —  —  —  1,260 
Settlements 33  —  — 
Net periodic (benefit) cost $ (438) $ (248) $ 163  $ 1,410 

Service cost is recorded in salaries and related costs in our income statement, while all other components are recorded within miscellaneous, net under non-operating expense.

We have no minimum funding requirements for our defined benefit pension plans in 2021, however we voluntarily contributed $1.5 billion to these plans in the June 2021 quarter.


Delta Air Lines, Inc. September 2021 Form 10-Q                                 15

Notes to the Consolidated Financial Statements
NOTE 7. COMMITMENTS AND CONTINGENCIES

Aircraft Purchase Commitments

Our future aircraft purchase commitments totaled approximately $16.9 billion at September 30, 2021. Also, as of September 30, 2021, we had commitments under leases that had not yet commenced of $795 million. These leases will commence between 2021 and 2024 with lease terms ranging from 7 to 12 years.

Aircraft purchase commitments
(in millions) Total
Three months ending December 31, 2021
$ 550 
2022 3,670 
2023 3,100 
2024 3,260 
2025 2,880 
Thereafter 3,430 
Total $ 16,890 

Our future aircraft purchase commitments included the following aircraft at September 30, 2021:

Aircraft purchase commitments by fleet type
Aircraft Type Purchase Commitments
A220-100
A220-300 41 
A321-200
A321-200neo 155 
A330-900neo 26 
A350-900(1)
26 
B-737-900ER 27 
Total 283 
(1)Includes six A350-900 lease commitments in 2021 incremental to our order book with Airbus.

Aircraft Orders

During the June and September 2021 quarters, we agreed with Airbus to add incremental aircraft to our order book by converting options for 55 A321neo aircraft into firm orders and replenishing 25 of our options. We expect to take delivery of our first A321neo in the first half of 2022, with deliveries of these aircraft continuing through 2027. Additionally, we agreed to move up two A350-900 deliveries and one A330-900neo delivery to occur in the second half of 2022.

During the June 2021 quarter, we agreed to acquire 29 B-737-900 aircraft and enter into leases for seven A350-900 aircraft. Additionally, during the September 2021 quarter, we agreed to enter into leases for two incremental A350-900 aircraft. We began taking delivery of these preowned aircraft in the September 2021 quarter and deliveries are expected to continue through the first quarter of 2022. Phased entry into service is expected through the summer of 2023.

Legal Contingencies

We are involved in various legal proceedings related to employment practices, environmental issues, antitrust matters and other matters concerning our business. We record liabilities for losses from legal proceedings when we determine that it is probable that the outcome in a legal proceeding will be unfavorable and the amount of loss can be reasonably estimated. Although the outcome of the legal proceedings in which we are involved cannot be predicted with certainty, we believe that the resolution of current matters will not have a material adverse effect on our Condensed Consolidated Financial Statements.
Delta Air Lines, Inc. September 2021 Form 10-Q                                 16

Notes to the Consolidated Financial Statements
Other Contingencies

General Indemnifications

We are the lessee under many commercial real estate leases. It is common in these transactions for us, as the lessee, to agree to indemnify the lessor and the lessor's related parties for tort, environmental and other liabilities that arise out of or relate to our use or occupancy of the leased premises. This type of indemnity would typically make us responsible to indemnified parties for liabilities arising out of the conduct of, among others, contractors, licensees and invitees at, or in connection with, the use or occupancy of the leased premises. This indemnity often extends to related liabilities arising from the negligence of the indemnified parties but usually excludes any liabilities caused by either their sole or gross negligence or their willful misconduct.

Our aircraft and other equipment lease and financing agreements typically contain provisions requiring us, as the lessee or obligor, to indemnify the other parties to those agreements, including certain of those parties' related persons, against virtually any liabilities that might arise from the use or operation of the aircraft or other equipment.

We believe that our insurance would cover most of our exposure to liabilities and related indemnities associated with the commercial real estate leases and aircraft and other equipment lease and financing agreements described above. While our insurance does not typically cover environmental liabilities, we have insurance policies in place as required by applicable environmental laws.

Some of our aircraft and other financing transactions include provisions that require us to make payments to preserve an expected economic return to the lenders if that economic return is diminished due to specified changes in laws or regulations. In some of these financing transactions, we also bear the risk of changes in tax laws that would subject payments to non-U.S. lenders to withholding taxes.

We cannot reasonably estimate our potential future payments under the indemnities and related provisions described above because we cannot predict (1) when and under what circumstances these provisions may be triggered and (2) the amount that would be payable if the provisions were triggered because the amounts would be based on facts and circumstances existing at such time.

Other

We have certain contracts for goods and services that require us to pay a penalty, acquire inventory specific to us or purchase contract-specific equipment, as defined by each respective contract, if we terminate the contract without cause prior to its expiration date. Because these obligations are contingent on our termination of the contract without cause prior to its expiration date, no obligation would exist unless such a termination occurs.


NOTE 8. ACCUMULATED OTHER COMPREHENSIVE LOSS

Components of accumulated other comprehensive loss
(in millions)
Pension and Other Benefit Liabilities(2)
Other Total
Balance at January 1, 2021 (net of tax effect of $1,764)
$ (9,078) $ 40  $ (9,038)
Changes in value (net of tax effect of $1)
— 
Reclassifications into earnings (net of tax effect of $71)(1)
235  —  235 
Balance at September 30, 2021 (net of tax effect of $1,692)
$ (8,840) $ 40  $ (8,800)
Balance at January 1, 2020 (net of tax effect of $1,549)
$ (8,095) $ 106  $ (7,989)
Changes in value (net of tax effect of $31)
(102) 17  (85)
Reclassifications into earnings (net of tax effect of $149)(1)
218  (83) 135 
Balance at September 30, 2020 (net of tax effect of $1,431)
$ (7,979) $ 40  $ (7,939)

(1)Amounts reclassified from accumulated other comprehensive loss for pension and other benefit liabilities are recorded in miscellaneous, net in non-operating expense in our income statement.
(2)Includes approximately $750 million of deferred income tax expense primarily related to pension and other benefit obligations that will not be recognized in net income until these obligations are fully extinguished.
Delta Air Lines, Inc. September 2021 Form 10-Q                                 17

Notes to the Consolidated Financial Statements
NOTE 9. SEGMENTS

Refinery Operations

Our refinery segment operates for the benefit of the airline segment by providing jet fuel to the airline segment from its own production and through jet fuel obtained through agreements with third parties. The refinery's production consists of jet fuel, as well as non-jet fuel products. We use several counterparties to exchange the non-jet fuel products produced by the refinery for jet fuel consumed in our airline operations. The gross fair value of the products exchanged under these agreements during the three and nine months ended September 30, 2021 was $629 million and $1.7 billion, respectively, compared to $249 million and $1.1 billion for the three and nine months ended September 30, 2020, respectively.

Segment Reporting

Segment results are prepared based on our internal accounting methods described below, with reconciliations to consolidated amounts in accordance with GAAP. Our segments are not designed to measure operating income or loss directly related to the products and services included in each segment on a stand-alone basis.

Financial information by segment
(in millions) Airline Refinery Intersegment Sales/Other Consolidated
Three Months Ended September 30, 2021
Operating revenue: $ 8,282  $ 1,696  $ 9,154 
Sales to airline segment $ (183)
(1)
Exchanged products (629)
(2)
Sales of refined products (12)
(3)
Operating income 2,108  97  —  2,205 
Interest expense, net 312  —  314 
Depreciation and amortization 501  24  (24)
(4)
501 
Restructuring charges 33  —  —  33 
Total assets, end of period 70,771  2,012  —  72,783 
Net fair value obligations, end of period(5)
—  (547) —  (547)
Capital expenditures 818  12  —  830 
Three Months Ended September 30, 2020
Operating revenue: $ 2,645  $ 669  $ 3,062 
Sales to airline segment $ — 
(1)
Exchanged products (249)
(2)
Sales of refined products (3)
(3)
Operating loss (6,358) (28) —  (6,386)
Interest expense, net 288  —  291 
Depreciation and amortization 545  25  (25)
(4)
545 
Restructuring charges 5,345  —  —  5,345 
Total assets, end of period 77,558  1,518  —  79,076 
Net fair value obligations, end of period(5)
—  (68) —  (68)
Capital expenditures 130  —  133 
(1)Represents transfers, valued on a market price basis, from the refinery to the airline segment for use in airline operations. We determine market price by reference to the market index for the primary delivery location, which is New York Harbor, for jet fuel from the refinery.
(2)Represents value of products delivered under our exchange agreements, as discussed above, determined on a market price basis.
(3)These sales were at or near cost; accordingly, the margin on these sales is de minimis.
(4)Refinery segment operating results, including depreciation and amortization, are included within aircraft fuel and related taxes in our income statement.
(5)The fair values of these obligations, which are related to renewable fuel compliance costs, are based on quoted market prices and other observable information and are classified as Level 2 in the fair value hierarchy. At September 30, 2021 we had a gross fair value obligation of $625 million and related assets of $78 million. At September 30, 2020 we had a gross fair value obligation of $80 million and related assets of $12 million. We expect to use the assets in settling a portion of our obligations.
Delta Air Lines, Inc. September 2021 Form 10-Q                                 18

Notes to the Consolidated Financial Statements
Financial information by segment
(in millions) Airline Refinery Intersegment Sales/Other Consolidated
Nine Months Ended September 30, 2021
Operating revenue: $ 18,240  $ 4,177  $ 20,429 
Sales to airline segment $ (292)
(1)
Exchanged products (1,667)
(2)
Sales of refined products (29)
(3)
Operating income (loss) 1,809  (186) —  1,623 
Interest expense, net 1,009  —  1,014 
Depreciation and amortization 1,494  72  (72)
(4)
1,494 
Restructuring charges (3) —  —  (3)
Capital expenditures 1,994  35  —  2,029 
Nine Months Ended September 30, 2020
Operating revenue: $ 12,413  $ 2,366  $ 13,122 
Sales to airline segment $ (214)
(1)
Exchanged products (1,144)
(2)
Sales of refined products (299)
(3)
Operating loss (11,498) (113) —  (11,611)
Interest expense, net 564  —  —  564 
Depreciation and amortization 1,813  74  (74)
(4)
1,813 
Restructuring charges 7,798  —  —  7,798 
Capital expenditures 1,336  15  —  1,351 
(1)Represents transfers, valued on a market price basis, from the refinery to the airline segment for use in airline operations. We determine market price by reference to the market index for the primary delivery location, which is New York Harbor, for jet fuel from the refinery.
(2)Represents value of products delivered under our exchange agreements, as discussed above, determined on a market price basis.
(3)These sales were at or near cost; accordingly, the margin on these sales is de minimis.
(4)Refinery segment operating results, including depreciation and amortization, are included within aircraft fuel and related taxes in our income statement.


NOTE 10. EARNINGS/(LOSS) PER SHARE

We calculate basic earnings/(loss) per share and diluted (loss) per share by dividing net income/(loss) by the weighted average number of common shares outstanding, excluding restricted shares. We calculate diluted earnings per share by dividing net income by the weighted average number of common shares outstanding plus the dilutive effect of outstanding share-based awards, including stock options, restricted stock awards and warrants. Antidilutive common stock equivalents excluded from the diluted earnings per share calculation are not material. The following table shows the computation of basic and diluted earnings/(loss) per share:

Basic and diluted earnings/(loss) per share
Three Months Ended September 30,
Nine Months Ended September 30,
(in millions, except per share data) 2021 2020 2021 2020
Net income/(loss) $ 1,212  $ (5,379) $ 688  $ (11,630)
Basic weighted average shares outstanding 637  635  636  636 
Dilutive effect of share-based awards —  — 
Diluted weighted average shares outstanding 641  635  641  636 
Basic earnings/(loss) per share $ 1.90  $ (8.47) $ 1.08  $ (18.30)
Diluted earnings/(loss) per share $ 1.89  $ (8.47) $ 1.07  $ (18.30)
Delta Air Lines, Inc. September 2021 Form 10-Q                                 19

Item 2. MD&A
ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our Condensed Consolidated Financial Statements and the related notes and other financial information included elsewhere in this Quarterly Report on Form 10-Q and our audited consolidated financial statements and related notes included in our 2020 Form 10-K.

Our business and operating results for 2021 continue to be significantly impacted by the COVID-19 pandemic. However, as described further below, we have seen improvement in our business beginning in March 2021 and progressing through the September 2021 quarter, which we expect to continue. Given the drastic and unprecedented impact of the pandemic on our operating results in 2020, we believe that for the financial overview discussion below, a comparison of our results in 2021 to 2019 allows for a better understanding of the full impact of the COVID-19 pandemic and the progress of our recovery. Throughout the remainder of this management's discussion and analysis, we present results for the three and nine months ended September 30, 2021, 2020 and 2019, and our commentary on results of operations, financial conditions and liquidity includes comparisons of 2021 results to both 2020 and 2019.

September 2021 Quarter Financial Overview

Our pre-tax income for the September 2021 quarter was $1.5 billion, including the $1.8 billion benefit related to recognition of the remaining PSP3 grant during the quarter. This represents a $415 million decrease in pre-tax income compared to the September 2019 quarter primarily due to a 27% reduction in operating revenue, partially offset by the recognition of the remaining PSP3 grant. Pre-tax income, adjusted (a non-GAAP financial measure) was $216 million, a decrease of $1.8 billion compared to the September 2019 quarter.

Revenue. Compared to the September 2019 quarter, our operating revenue decreased $3.4 billion, or 27%, due primarily to reduced demand resulting from the COVID-19 pandemic.

Operating Expense. Total operating expense in the September 2021 quarter decreased $3.5 billion, or 34%, compared to the September 2019 quarter, primarily resulting from recognition of the remaining PSP3 grant, lower volume-related expenses, mainly fuel and passenger commissions and other selling expenses, lower salaries and related costs and profit sharing, and significant cost reduction measures taken across all aspects of our operation in response to the COVID-19 pandemic. These decreases were partially offset by an increase in expenses related to refinery sales to third parties, reflected in ancillary business and refinery expense. Total operating expense, adjusted (a non-GAAP financial measure) for the September 2021 quarter decreased $2.6 billion, or 25%, compared to the September 2019 quarter.

Non-Operating Results. Total non-operating expense was $673 million in the September 2021 quarter, $549 million higher than the September 2019 quarter, primarily due to higher interest expense as a result of our increased debt due to financing arrangements entered into in 2020, losses on debt extinguishment and mark-to-market losses on certain of our equity investments.

Cash Flow. Our cash, cash equivalents, short-term investments and aggregate principal amount committed and available to be drawn under our revolving credit facilities ("liquidity") as of September 30, 2021 was $15.8 billion. During the September 2021 quarter, operating activities generated $151 million. Also during the quarter, investing activities used $384 million, primarily for capital expenditures, partially offset by net redemptions of short-term investments. Capital expenditures primarily related to the purchase of aircraft, fleet modifications, our airport redevelopment projects and technology enhancements. These activities resulted in $463 million of negative free cash flow (a non-GAAP financial measure) in the September 2021 quarter. Also, during the September 2021 quarter we had cash outflows of approximately $1.6 billion related to repayments of our debt and finance leases, including approximately $1.3 billion for early repayments and the remainder from scheduled maturities.

The non-GAAP financial measures referenced above for pre-tax income, adjusted, operating expense, adjusted, and free cash flow are defined and reconciled in "Supplemental Information" below.

Delta Air Lines, Inc. September 2021 Form 10-Q                                 20

Item 2. MD&A
Environmental Sustainability. In February 2020, we announced plans to invest $1.0 billion over the next 10 years in our effort to achieve carbon neutrality from March 1, 2020 forward, a commitment we have reiterated despite the challenges faced during the COVID-19 pandemic. Our plan to achieve airline carbon neutrality includes the purchase and retirement of carbon offset credits as well as increased use of sustainable aviation fuel and improved fuel efficiency from fleet renewal and operational initiatives. In the first nine months of 2021, we incurred $69 million of expense related to carbon offset credits. This amount consists of $30 million to address 13 million metric tons of carbon emissions generated by our airline segment from March 1 to December 31, 2020 through carbon offset credits, as well as an additional $39 million for the purchase and retirement of carbon offset credits related to a portion of our airline segment's 2021 carbon emissions. In September 2021, we committed to setting net zero 2050 and interim goals through the Science Based Targets initiative ("SBTi") for our airline operations using recently released SBTi criteria and guidance for the aviation sector.
Delta Air Lines, Inc. September 2021 Form 10-Q                                 21

Item 2. MD&A - Results of Operations
Results of Operations - Three Months Ended September 30, 2021, 2020 and 2019

Operating Revenue
Three Months Ended September 30,
2021 vs. 2020
% Increase (Decrease)(2)
2021 vs. 2019
% Increase (Decrease)(2)
(in millions)(1)
2021 2020 2019
Ticket - Main cabin $ 3,742  $ 1,057  $ 6,021  254  % (38) %
Ticket - Business cabin and premium products 2,495  577  4,008  332  % (38) %
Loyalty travel awards 544  143  732  280  % (26) %
Travel-related services 410  161  649  155  % (37) %
Total passenger revenue $ 7,191  $ 1,938  $ 11,410  271  % (37) %
Cargo 262  142  189  85  % 39  %
Other 1,701  982  961  73  % 77  %
Total operating revenue $ 9,154  $ 3,062  $ 12,560  199  % (27) %
TRASM (cents) 16.93  ¢ 10.82  ¢ 16.58  ¢ 56  % %
Third-party refinery sales(3)
(1.61) (1.47) (0.01) 10  % NM
Delta Private Jets adjustment(3)
—  —  (0.06) —  % (100) %
TRASM, adjusted 15.31  ¢ 9.35  ¢ 16.51  ¢ 64  % (7) %
(1)Total amounts in the table above may not calculate exactly due to rounding.
(2)Certain variances are labeled as not meaningful ("NM") throughout management's discussion and analysis.
(3)For additional information on adjustments to TRASM, see "Supplemental Information" below.

Operating Revenue

Compared to the September 2019 quarter, our operating revenue decreased $3.4 billion, or 27%, due primarily to reduced demand resulting from the COVID-19 pandemic. The decline in operating revenue, on a 29% decrease in capacity, resulted in a 2% increase in total revenue per available seat mile ("TRASM") and a 7% decrease in TRASM, adjusted compared to the September 2019 quarter.

Our operating revenue increased $6.1 billion compared to the September 2020 quarter due to the continued recovery in demand that began in the September 2020 quarter, following the depth of the COVID-19 pandemic impact in the June 2020 quarter. The increase in operating revenue, which outpaced the 91% increase in capacity, resulted in a 56% increase in TRASM and a 64% increase in TRASM, adjusted.

See "Refinery Segment" below for additional details on the refinery's operations, including third-party refinery sales recorded in other revenue, during each period.

The length and severity of the reduction in travel demand due to the COVID-19 pandemic remains uncertain; however, with continued distribution of effective vaccines and easing of travel advisories and restrictions, we believe customer confidence will continue to grow, leading to increased demand for the remainder of 2021, subject to seasonality-driven impacts. The September 2021 quarter started with July monthly revenue increasing over the prior month at a higher rate than our historical seasonality-based change. However, we experienced a temporary pause in demand in August and early September due to a rise in COVID-19 cases attributable to a variant of the COVID-19 virus. We expect domestic leisure travel to remain near 2019 levels, while we are experiencing a delay in the return of business travel as many companies are pausing or delaying return to office plans. We continue to expect domestic demand recovery to lead international demand recovery. We believe international demand recovery will continue to be uneven in the remainder of 2021 and the beginning of 2022. We continue to monitor risks to the pace of recovery from COVID-19 variants, the impact of vaccine programs and travel advisories and restrictions. We are planning for our system capacity to be approximately 20% lower in the December 2021 quarter than the December 2019 quarter.

We have historically generated cargo revenue in domestic and international markets through the use of cargo space on regularly scheduled passenger aircraft. Reduced industry capacity as a result of the COVID-19 pandemic drove a significant increase in our cargo yield and our cargo revenue in the September 2021 quarter compared to the September 2019 quarter. Compared to the September 2020 quarter, our cargo revenue in the September 2021 quarter increased due to continued higher yields as well as higher volume.
Delta Air Lines, Inc. September 2021 Form 10-Q                                 22

Item 2. MD&A - Results of Operations
Passenger Revenue by Geographic Region
Increase (Decrease)
vs. Three Months Ended September 30, 2020
(in millions)
Three Months Ended September 30, 2021
Passenger Revenue
RPMs (Traffic)
ASMs (Capacity)
Passenger Mile Yield PRASM Load Factor
Domestic $ 5,759  250  % 242  % 74  % % 101  % 41  pts
Atlantic 730  455  % 559  % 179  % (16) % 99  % 41  pts
Latin America 564  482  % 469  % 226  % % 79  % 34  pts
Pacific 138  121  % 73  % 50  % 28  % 47  % pts
Total $ 7,191  271  % 273  % 91  % —  % 94  % 39  pts

Increase (Decrease)
vs. Three Months Ended September 30, 2019
(in millions)
Three Months Ended September 30, 2021
Passenger Revenue
RPMs (Traffic)
ASMs (Capacity)
Passenger Mile Yield PRASM Load Factor
Domestic $ 5,759  (28) % (20) % (16) % (10) % (15) % (4) pts
Atlantic 730  (65) % (65) % (56) % % (20) % (18) pts
Latin America 564  (16) % (15) % (7) % (1) % (10) % (8) pts
Pacific 138  (80) % (90) % (67) % 101  % (39) % (60) pts
Total $ 7,191  (37) % (36) % (29) % (2) % (12) % (9) pts


In the March 2021 quarter, we announced the extension of the validity of all passenger tickets and travel credits purchased or expiring in 2021 to December 31, 2022. Additionally, with the exception of Basic Economy tickets, we eliminated change fees for tickets originating in North America and waived change fees for those originating outside of North America. We also implemented a waiver that allows Basic Economy tickets purchased for travel in 2021, which are normally non-changeable, to be changed without paying a fee regardless of origin or destination. We do not expect the updated change fee policies to materially affect our revenue in future periods; however, our estimates of revenue that will be recognized for unused tickets may vary in future periods due to the extension of the validity of passenger tickets and travel credits.

Domestic

Domestic passenger unit revenue ("PRASM") for the September 2021 quarter decreased 15% with capacity down 16% compared to the September 2019 quarter as a result of reduced demand due to the COVID-19 pandemic. The revenue increase in the September 2021 quarter compared to the September 2020 quarter is attributable to the low levels of capacity and demand during the September 2020 quarter due to the COVID-19 pandemic and the ongoing recovery in the September 2021 quarter.

The September 2021 quarter began with domestic leisure demand near September 2019 quarter levels. This strong demand moderated slightly in the second half of the quarter due to a rise in COVID-19 cases attributable to a variant of the virus. However, as cases begin to decline, leisure and business bookings are increasing. We also remain optimistic about the ultimate recovery of business travel; however, in the September 2021 quarter we experienced a pause in the recovery of this demand. We expect this demand to improve modestly in the December 2021 quarter but accelerate in the first half of 2022 as more corporate offices reopen; we are, however, unable to fully predict the pace of that recovery.

International

International passenger revenue for the September 2021 quarter decreased 58% with capacity down 50% compared to the September 2019 quarter. Compared to the September 2020 quarter passenger revenue has increased as travel to certain destinations has resumed or increased. The decreases in revenue and capacity compared to the September 2019 quarter resulted from continued reduced demand, including as a result of government travel directives and quarantines significantly limiting or suspending air travel due to the COVID-19 pandemic. Additionally, while some countries have removed or eased travel restrictions, many countries maintained or reinstituted international testing requirements and travel restrictions, which have restrained demand in the short-term but are expected to enable the long-term recovery of international air travel.

Delta Air Lines, Inc. September 2021 Form 10-Q                                 23

Item 2. MD&A - Results of Operations
We are monitoring the Biden administration's recent announcement that will lift travel restrictions on all fully vaccinated foreign visitors to the United States beginning in November 2021. This action will make travel to the U.S. by many foreign nationals possible for the first time in 18 months. Despite this policy change, we expect the significantly lower international demand environment to continue at least into early 2022, with the recovery pace continuing to trail domestic travel. In each of the international regions, we continue to monitor government travel directives and customer demand and will continue to adjust flight schedules accordingly.

The Atlantic and Pacific regions continue to be the most impacted by the restrictions described above. However, in the September 2021 quarter, we have continued our service to certain countries in the Atlantic region based on their lifting or easing of travel restrictions. These countries include Croatia, France, Germany, Greece, Iceland, Italy, the Netherlands, Portugal and Spain. Travel in the Pacific region is largely limited to essential travel, and we expect only small demand improvements until vaccine distribution improves and government restrictions ease.

The Latin America region has shown the most recovery of the international regions, with continued demand improvement for leisure destinations in the Caribbean, Mexico and Central America. Capacity in the Latin America region in the September 2021 quarter has increased to near September 2019 quarter levels and as demand continues to return we expect revenue to return to those levels as well. We expect this trend to continue through the remainder of 2021 with the recovery in the Atlantic and Pacific regions lagging behind Latin America.

Other Revenue
Three Months Ended September 30,
2021 vs. 2020
% Increase (Decrease)
2021 vs. 2019
% Increase (Decrease)
(in millions) 2021 2020 2019
Refinery $ 872  $ 417  $ 109  % NM
Loyalty program 453  343  485  32  % (7) %
Ancillary businesses 215  155  285  39  % (25) %
Miscellaneous 161  67  185  140  % (13) %
Total other revenue $ 1,701  $ 982  $ 961  73  % 77  %

Refinery. This represents refinery sales to third parties. These sales, which are at or near cost, increased $455 million and $866 million compared to the September 2020 and September 2019 quarters, respectively. The increase in third-party refinery sales compared to the September 2019 quarter resulted from the refinery's shift to producing and selling more non-jet fuel products due to the decline in demand for jet fuel compared to pre-pandemic levels. The increase compared to the September 2020 quarter was driven by higher pricing during the September 2021 quarter, with lower production and demand for both jet and non-jet fuel products in the September 2020 quarter. See "Refinery Segment" below for additional details on the refinery's operations, including third-party refinery sales recorded in other revenue, during each period.

Loyalty Program. Loyalty program revenues relate to brand usage by third parties and other performance obligations embedded in miles sold, including redemption of miles for non-travel awards. These revenues are mainly driven by customer spend on American Express cards and new cardholder acquisitions. Revenues from our relationship with American Express increased in the September 2021 quarter compared to the September 2020 period and were effectively flat compared to the September 2019 period. During the September 2021 quarter, co-brand card spend surpassed September 2019 levels and card acquisitions were nearly recovered to September 2019 levels.

Ancillary Businesses. Ancillary businesses revenue includes aircraft maintenance services we provide to third parties and our vacation wholesale operations. Compared to the September 2019 quarter, revenue from aircraft maintenance services we provide to third parties decreased due to the reduction in flights operated worldwide. Compared to the September 2020 quarter, these revenues increased due to higher levels of flying. The September 2019 quarter results also included $47 million of revenue from Delta Private Jets, which was combined with Wheels Up in January 2020 and is no longer reflected in ancillary businesses.

Miscellaneous. Miscellaneous revenue is primarily composed of lounge access and codeshare revenues. The volume of these transactions has fallen compared to the September 2019 quarter due to the impact of, and our response to, the COVID-19 pandemic, including reduced capacity. However, compared to the September 2020 quarter, these transactions have increased due to the general recovery in our business that continued to materialize in the September 2021 quarter. Our full network of lounges was reopened by the end of July 2021.

Delta Air Lines, Inc. September 2021 Form 10-Q                                 24

Item 2. MD&A - Results of Operations
Operating Expense
Three Months Ended September 30,
2021 vs. 2020
% Increase (Decrease)
2021 vs. 2019
% Increase (Decrease)
(in millions) 2021 2020 2019
Salaries and related costs $ 2,566  $ 2,012  $ 2,976  28  % (14) %
Aircraft fuel and related taxes 1,552  486  2,239  219  % (31) %
Ancillary businesses and refinery 1,079  561  279  92  % 287  %
Contracted services 634  419  760  51  % (17) %
Depreciation and amortization 501  545  631  (8) % (21) %
Landing fees and other rents 524  458  566  14  % (7) %
Regional carrier expense 453  290  543  56  % (17) %
Aircraft maintenance materials and outside repairs 433  106  424  308  % %
Passenger commissions and other selling expenses 308  100  597  208  % (48) %
Passenger service 226  92  360  146  % (37) %
Aircraft rent 105  99  110  % (5) %
Restructuring charges 33  5,345  —  (99) % NM
Government grant recognition (1,822) (1,315) —  39  % NM
Profit sharing —  —  517  —  % (100) %
Other 357  250  487  43  % (27) %
Total operating expense $ 6,949  $ 9,448  $ 10,489  (26) % (34) %

In response to the reduced demand and related reduction in revenue following the onset of the COVID-19 pandemic in early 2020, we quickly reduced capacity to more closely align with demand, implemented cost saving initiatives related to our fleet and operations, offered employees voluntary separation programs and delayed or eliminated nearly all discretionary spending.

As a result, most operating expense line items remain significantly lower in the September 2021 quarter than in the September 2019 quarter. Operating expense decreased primarily due to recognition of the remaining PSP3 grant, lower volume-related expenses, mainly fuel and passenger commissions and other selling expenses, lower salaries and related costs and profit sharing, and significant cost reduction measures taken across all aspects of our operation in response to the COVID-19 pandemic. During the September 2021 quarter, as distribution of effective vaccines continued, travel restrictions and advisories eased and customer confidence continued to grow despite the negative impact of a variant of the COVID-19 virus, we saw revenue and capacity return and related operating expense line items increase. However, we believe that a portion of the cost savings achieved during 2020 was structural in nature, which we expect to contribute to a lower non-fuel unit cost in the future as capacity is fully restored.

The discussion below is focused largely on the changes in certain operating expense line items compared to the September 2020 and September 2019 quarters that were not primarily driven by the change in capacity or revenue. These include many of what are expected to be structural cost reduction measures and programs we implemented in response to the COVID-19 pandemic.

Salaries and Related Costs. Actions taken as a result of decreased demand for air travel due to the COVID-19 pandemic had a significant impact on salaries and related costs, leading to a decrease compared to the September 2019 quarter. In the second half of 2020, approximately 18,000 employees elected to participate in voluntary separation programs, which initially reduced our workforce by approximately 20%, though some of those positions have subsequently been filled. Since the beginning of 2021, we have hired approximately 8,000 employees in certain areas, including flight operations and reservations and customer care, in order to support our operations as demand and capacity return.

Beginning in March 2020 and continuing through December 2020, salaries were reduced by 100% for our CEO and 50% for our other officers. In addition, work hours were reduced by 25% for all other management and most front-line employee work groups. On January 1, 2021, employees were restored to full work hours and we have recalled approximately 1,700 pilots from inactive status back to active service. Additionally, approximately 40,000 employees took voluntary unpaid leaves of absence during the September 2020 quarter. These actions resulted in higher salaries and related costs in the September 2021 quarter compared to the September 2020 quarter.

Delta Air Lines, Inc. September 2021 Form 10-Q                                 25

Item 2. MD&A - Results of Operations
Aircraft Fuel and Related Taxes. Fuel expense decreased $687 million compared to the September 2019 quarter primarily due to a 32% decrease in consumption, partially offset by a 1% increase in the market price of jet fuel. Consumption decreased due to a combination of reduced capacity and improved fuel efficiency on an available seat mile basis.

Fuel expense increased $1.1 billion compared to the September 2020 quarter primarily due to a 102% increase in consumption on a comparable increase in capacity, and a 75% increase in the market price of jet fuel.

Additionally, during the September 2021 quarter, we purchased and retired $29 million of carbon offset credits, which relate to a portion of 2021 carbon emissions generated by our airline segment. In the table below, these costs are shown in environmental sustainability impact.

Fuel expense and average price per gallon
Average Price Per Gallon
Three Months Ended September 30,
2021 vs. 2019 Increase (Decrease)
Three Months Ended September 30,
2021 vs. 2019 Increase (Decrease)
(in millions, except per gallon data)
2021 2020 2019 2021 2020 2019
Fuel purchase cost(1)
$ 1,601  $ 449  $ 2,313  $ (712) $ 2.03  $ 1.16  $ 2.00  $ 0.03 
Environmental sustainability impact 29  —  —  29  0.04  —  —  0.04 
Fuel hedge impact 19  (25) 44  0.02  0.02  (0.02) 0.04 
Refinery segment impact (97) 28  (49) (48) (0.12) 0.07  (0.04) (0.08)
Total fuel expense $ 1,552  $ 486  $ 2,239  $ (687) $ 1.97  $ 1.25  $ 1.94  $ 0.03 
(1)Market price for jet fuel at airport locations, including related taxes and transportation costs.

Ancillary Businesses and Refinery. Ancillary businesses and refinery includes expenses associated with refinery sales to third parties, aircraft maintenance services we provide to third parties and our vacation wholesale operations. Increased expenses were primarily related to refinery sales to third parties, which are at or near cost. The refinery cost of sales increased $455 million and $866 million compared to the September 2020 and September 2019 quarters, respectively. The increase in third-party refinery sales compared to the September 2019 quarter resulted from the refinery's shift to producing and selling more non-jet fuel products due to the decline in demand for jet fuel compared to pre-pandemic levels. The increase compared to the September 2020 quarter was driven by higher pricing during the September 2021 quarter, with lower production and demand for both jet and non-jet fuel products in the September 2020 quarter. Compared to the September 2019 quarter, expenses related to aircraft maintenance services we provide to third parties decreased due to the reduction in flights operated worldwide; however, compared to the September 2020 quarter these expenses increased due to higher levels of flying. In addition, $43 million of costs related to services performed by Delta Private Jets in the September 2019 quarter were recorded in ancillary businesses and refinery prior to the combination of that business with Wheels Up in January 2020.

Depreciation and Amortization. Depreciation and amortization decreased compared to the September 2020 and September 2019 quarters primarily due to the aircraft that were retired or impaired during 2020.

Regional Carrier Expense. Regional carrier expense decreased compared to the September 2019 quarter due to lower utilization of these carriers as a result of the overall reduced capacity and increased compared to the September 2020 quarter due to an increase in utilization as a result of the increased demand discussed above.

We previously allocated certain costs (such as landing fees and other rents, salaries and related costs and contracted services) to regional carrier expense in our income statement based on relevant statistics (such as passenger counts). Beginning in the March 2021 quarter we ceased performing this allocation and have reclassified the costs presented in prior periods to align with this presentation. This reclassification better reflects the nature of, and how management views, these regional carrier related expenses. This allocation was approximately $900 million in 2020, including approximately $200 million in the September 2020 quarter, and $1.4 billion in 2019, including approximately $360 million in the September 2019 quarter. The remaining amounts in regional carrier expense represent the accrual of payments to our regional carriers under capacity purchase agreements and the expenses of our wholly owned regional subsidiary, Endeavor Air, Inc.

Aircraft Maintenance Materials and Outside Repairs. Maintenance expense increased compared to both the September 2019 and September 2020 quarters as we returned aircraft to service and to support our operational reliability. The increase compared to the September 2020 quarter was particularly pronounced due to the significantly reduced capacity during the September 2020 quarter and the large number of aircraft we had parked during that time.

Delta Air Lines, Inc. September 2021 Form 10-Q