6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20546

FORM 6-K

REPORTOF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16

UNDERTHE SECURITIES EXCHANGE ACT OF 1934

For the month of November, 2025

Commission File Number: 333-221916

CorporaciónAmérica Airports S.A.

(Name of Registrant)

128, Boulevardde la PétrusseL-2330 LuxembourgTel: +35226258274(Address of Principal Executive Office)

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 x 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): ¨

Note: Regulation S-T Rule 101(b)(1) only permits the submission in paper of a Form 6-K if submitted solely to provide an attached annual report to security holders.

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): ¨

Note: Regulation S-T Rule 101(b)(7) only permits the submission in paper of a Form 6-K if submitted to furnish a report or other document that the registrant foreign private issuer must furnish and make public under the laws of the jurisdiction in which the registrant is incorporated, domiciled or legally organized (the registrant’s “home country”), or under the rules of the home country exchange on which the registrant’s securities are traded, as long as the report or other document is not a press release, is not required to be and has not been distributed to the registrant’s security holders, and, if discussing a material event, has already been the subject of a Form 6-K submission or other Commission filing on EDGAR.

SIGNATURES

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 5, 2025

Exhibit Index

Exhibit 99.1

CorporaciónAmérica Airports Signs Award Agreement to Operate Baghdad International Airport

Luxembourg, November 5, 2025—Corporación América Airports S.A. (NYSE: CAAP), (the “Company”), one of the leading private airport operators in the world, today announced that the consortium formed by Corporación América Airports S.A. and Amwaj International for Real-Estate Investments Co. Ltd. (the “Consortium”) has signed an award agreement with the Government of Iraq, following an international tender process to operate Baghdad International Airport. Pursuant to the terms of the award agreement, the Parties have a term of ninety (90) days (which may be extended by mutual agreement) to negotiate in good faith and enter into the respective PPP Agreement. The award agreement was signed after Iraq’s Ministry of Transport declared that the Consortium submitted the most competitive financial, commercial, and technical proposal within the tender process, which was supervised by the International Finance Corporation (IFC), a member of the World Bank Group.

Martin Eurnekian, CEO of CorporaciónAmérica Airports, commented: “We are honored to have been selected to contribute to Baghdad’s airport modernization efforts. Together with our partner Amwaj International, we are committed to developing world-class airport infrastructure that will enhance connectivity, promotes economic growth, and creates opportunities for local communities. We look forward to working closely with the Government of Iraq and our partners to deliver a world-class airport that supports the country’s long-term growth.”

Namir Al-Ekabi, Chairman ofAmwaj International, commented: “This milestone marks a proud moment for Iraq and a testament to the strength of our private sector. Signing this award agreement alongside our partner, Corporación América Airports, demonstrates Iraq’s growing capability and readiness to operate at world-class standards. Amwaj International remains committed to investing in the future of our country by developing infrastructure that reflects the spirit, resilience, and ambition of the Iraqi people. Baghdad International Airport will become a gateway that connects Iraq to the world and stands as a symbol of progress, excellence, and national pride.”

About Corporación América Airports

Corporación América Airports acquires, develops and operates airport concessions. Currently, the Company operates 52 airports in 6 countries across Latin America and Europe (Argentina, Brazil, Uruguay, Ecuador, Armenia and Italy). In 2024, Corporación América Airports served 79.0 million passengers, 2.7% (or 0.4% excluding Natal) below the 81.1 million passengers served in 2023, and 6.2% below the 84.2 million served in 2019. The Company is listed on the New York Stock Exchange where it trades under the ticker “CAAP”. For more information, visit http://investors.corporacionamericaairports.com.

About Amwaj International

Amwaj International is a leading publicly listed Iraqi investment and development group headquartered in Baghdad, with a paid-up capital of IQD 20 billion and more than 10,000 employees. The company manages assets exceeding USD 6 billion across multiple sectors, including real estate, infrastructure, tourism, and hospitality. Amwaj has delivered landmark developments such as the Iraq Gate Project in Baghdad (valued at USD 2 billion), and several regional investments across the UAE, Turkey, Egypt, UK and USA. The company remains committed to contributing to the country’s sustainable economic growth and global integration. For more information, visit http://www.amwaj.com.

Investor Relations Contact

Patricio IñakiEsnaola

Email: patricio.esnaola@caairports.com

Phone: +5411 4899-6716