UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20546

FORM 6-K

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

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of November, 2025

Commission File Number: 333-221916

Corporación América Airports S.A.

(Name of Registrant)

128, Boulevard de la Pétrusse L-2330, Luxembourg Grand Duchy of Luxembourg Tel: +35226258274 Fax: +35226259776 (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:~~UNAUDITED ~~Regulation~~CONDENSED ~~S-T Rule 101(b)(7) only permits~~CONSOLIDATED ~~the~~INTERIM ~~submission~~FINANCIAL inSTATEMENTS ~~paper~~FOR ofTHE THREE aAND ~~Form 6~~ NINE-KMONTH ifPERIOD ~~submitted~~ENDED SEPTEMBER ~~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~~30, 2025 ~~domiciled~~AND 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.2024

This report of foreign private issuer on Form 6-K (this “Form 6-K”) is being filed by Corporación América Airports S.A. (“CAAP” or the “Company”) with the Securities and Exchange Commission. The Company is filing this report on Form 6-K for the purpose of filing a copy of the Company’s unaudited condensed consolidated interim financial statements for the three and nine-month period ended September 30, 2025 and 2024 (the “Consolidated Financial Statements”) as Exhibit 99.1. The Consolidated Financial Statements are presented in U.S. Dollars and prepared in accordance with IAS 34, “Interim Financial Reporting”. These Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements for the year ended` December 31, 2024, which have been prepared in accordance with IFRS Accounting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”) and interpretations (“IFRIC”) issued by the IFRS Interpretations Committee applicable to companies reporting under IFRS.

Exhibits

Exhibit No.	Description
99.1	CAAP Unaudited Condensed Consolidated Interim Financial Statements for the three and nine-month period ended September 30, 2025 and 2024

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~~Corporación America Airports S.A. By: ~~November~~/s/ ~~21,~~Andres ~~2025~~Zenarruza Name: Andres Zenarruza Title: Head of Legal and Compliance By: /s/ Jorge Arruda Name: Jorge Arruda Title: Chief Financial Officer

~~Corporación America Airports S.A. By~~Date: ~~/s/~~November ~~Andres~~24, ~~Zenarruza Name: Andres Zenarruza Title: Head of Legal & Compliance By: /s/ Jorge Arruda Name: Jorge Arruda Title: Chief Financial Officer~~2025

Exhibit Index

Exhibit No.	Description
99.1	Press release dated November 21, 2025 - Corporación América Airports S.A. Reports October 2025 Passenger Traffic.

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