AVH Avianca Holdings SA

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

OF THE SECURITIES EXCHANGE ACT OF 1934

For the month of May, 2019.

Commission File Number 001-36142

Avianca Holdings S.A.

(Translation of registrant’s name into English)

Aquilino de la Guardia Calle No. 8, Panama City,

Republic of Panama

(+507) 205-600

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F  ☒            Form 40-F  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):  ☐

Bogotá D.C., May 24, 2019

FORMALIZATION OF AMENDMENT TO THE BYLAWS

Avianca Holdings S.A. (the “Company”) informs that the amendment to the bylaws of the Company approved at the extraordinary meeting of the shareholders held via telephone conference on May 24, 2019, as informed to the market on May 24, was formalized by Public Deed No. 7,153, dated May 24, 2019, granted before the Fourth Notary of the Circuit of Panama, and registered before the Panamanian Public Registry on May 24, 2019.

For further information please contact:

Avianca Investor Relations

+ 571-5877700 ext. 2474, 1349

ir@avianca.com

ABOUT AVIANCA HOLDINGS S.A.

The terms “Avianca Holdings” or “the Company” refer to the consolidated entity. The original source-language text of this announcement is the official, authoritative version, Translations are provided as an accommodation only, and should be cross-referenced with the source-language text, which is the only version of the text intended to have legal effect.

Avianca Holdings S.A. (NYSE: AVH) (BVC:PFAVH) comprises the airlines: Aerovías del Continente Americano S.A.—Avianca, Tampa Cargo S.A., incorporated in Colombia, Aerolineas Galapagos S.A.—Aerogal, incorporated in Ecuador, and the TACA Group companies: TACA International Airlines S.A., incorporated in El Salvador, Lineas Aereas Costarricenses S.A.—LACSA, incorporated in Costa Rica, Transamérican Airlines S.A.—TACA Perú, incorporated in Perú, Servicios Aéreos Nacionales S.A.—SANSA, incorporated in Costa Rica, Aerotaxis La Costeña S.A., incorporated in Nicaragua, and Isleña de Inversiones S.A. de C.V.—ISLEÑA, incorporated in Honduras.

+571 587 77 00 – 2474, 1349

ir@avianca.com