Report of Foreign Issuer (6-k)

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 November, 2017

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): ☐

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Bogota, November 29, 2017

Avianca Holdings S.A. and Kingsland Holdings Ltd. Agree to Withdraw Lawsuits

Avianca Believes Kingsland’s Lawsuit was Premature and Meritless

Avianca Continues to Negotiate a Strategic Alliance with United Airlines

NEW YORK, New York and BOGOTÁ, Colombia. — Avianca Holdings S.A. and Kingsland Holdings Ltd. today agreed to withdraw their respective lawsuits filed in New York State Supreme Court. The parties jointly filed a stipulation with the court dismissing the actions without prejudice.

Avianca continues to negotiate a strategic alliance with United Airlines and hopes to finalize an agreement by the end of the year.

“As we’ve said all along, Kingsland’s lawsuit was meritless and filed prematurely, and we are pleased that the parties have reached an agreement to dismiss both actions,” said Avianca CEO Hernán Rincón. “Avianca is now looking beyond the litigation, and we are pleased that negotiations with United are progressing. Moving forward, Avianca will continue to focus on serving our passengers, advancing our strategic goals, and developing our business across Latin America.”

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.

About Avianca Holdings S.A.

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.

Investor Relations Office

+571 587 77 00

ir@avianca.com

LOGO

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: November 29, 2017