6-K

CORPORACION AMERICA AIRPORTS S.A. (CAAP)

6-K 2025-09-17 For: 2025-09-17
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Added on April 04, 2026

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 September, 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: September 17, 2025

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

Exhibit Index


Exhibit No. Description
99.1 Press release dated September<br>17, 2025 - Corporación América Airports S.A. Reports August 2025 Passenger Traffic.

Exhibit 99.1

Corporación AméricaAirports S.A. Reports August 2025 Passenger Traffic

Total passenger traffic up 10.2% YoY, up 13.5% YoY in Argentina

International passenger traffic up 9.6% YoY; up 18.9% YoY in Argentina

Luxembourg,September 17, 2025— Corporación América Airports S.A. (NYSE: CAAP), (“CAAP” or the “Company”), one of the leading private airport operators in the world, reported today a 10.2% year-on-year (YoY) increase in passenger traffic in August 2025.

Passenger Traffic, Cargo Volume and Aircraft Movements Highlights (2025 vs. 2024)
Statistics Aug'25 Aug'24 % Var. YTD’25 YTD'24 % Var.
Domestic<br> Passengers (thousands) 3,963 3,590 10.4% 29,020 26,589 9.1%
International<br> Passengers (thousands) 3,231 2,948 9.6% 22,672 20,412 11.1%
Transit<br> Passengers (thousands) 746 668 11.7% 5,253 4,725 11.2%
**Total Passengers (**thousands)^1^ 7,940 7,205 10.2% 56,944 51,726 10.1%
**Cargo Volume (**thousand tons) 29.9 32.6 -8.2% 254.0 245.9 3.3%
**Total Aircraft Movements (**thousands) 78.1 72.8 7.2% 576.8 540.8 6.7%

^1^ Following the friendly termination process concluded in February 2024, CAAP no longer operates Natal airport. Statistics for Natal are available up to February 18, 2024. Excluding Natal for comparison purposes, total passenger traffic YTD was up 10.9%.

MonthlyPassenger Traffic Performance

(Inmillion PAX)

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Passenger Traffic Overview

Totalpassenger traffic increased by 10.2% in August compared to the same month in 2024. Domestic passenger traffic rose by 10.4% year over year (YoY), largely driven by Argentina, along with strong performances in Brazil and, to a lesser extent, Italy. Meanwhile, international traffic grew by 9.6%, with all operating countries contributing positively YoY—except Uruguay—and particularly strong results in Argentina, Italy and Armenia. Notably, Argentina accounted for two thirds of the total traffic growth in August.

In Argentina, total passenger traffic increased by 13.5% YoY, driven by double-digit growth in both international and domestic segments. Domestic traffic maintained its strong performance, rising by 10.4% YoY despite the strike organized by the ATEPSA union on August 22, 24, and 26. International traffic also remained solid, increasing by 18.9% YoY, with particularly strong results on the Buenos Aires–Madrid route, which operated six daily flights with load factors of 94%. The winter season reached record highs in Bariloche and Mendoza, which were the destinations with the highest YoY growth among international travelers. Similar to domestic traffic, international operations were also affected by the ATEPSA union strike on August 22, 24, and 26.

In Italy, passenger traffic grew by 6.8% compared to the same month in 2024, mainly supported by an increase in flight frequencies by Ryanair. International passenger traffic, which accounted for over 80% of total traffic, rose by 6.7% YoY, driven by a 10.5% increase at Florence Airport and a 4.4% increase at Pisa Airport. Domestic passenger traffic grew by 6.9% YoY, supported by a strong performance at Pisa Airport (+10.9%) due to the increase in Ryanair’s flight frequencies, partially offset by a 3.5% decline at Florence Airport.

In Brazil, total passenger traffic increased by 10.2% YoY, reflecting an improvement in traffic trends despite ongoing challenges in the aviation environment. Domestic traffic, which accounted for almost 60% of total traffic, rose by a strong 13.7% YoY, while transit passengers increased by 4.9% YoY. Notably, although representing a small share of total traffic (5%), international traffic grew by 13.5% YoY.

In Uruguay, total passenger traffic, predominantly international, declined by 6.3% YoY. The year-over-year comparison was affected by JetSMART’s removal of the Montevideo–Buenos Aires route in the second half of 2024. In addition, traffic in August was impacted by a four-day scheduled closure of operations due to the installation of the new Category IIIb Precision Instrument Landing System (ILS CAT IIIb) on the main runway.

In Ecuador, where security concerns persist, passenger traffic increased by 2.0% YoY. International traffic grew by 3.6% YoY, mainly driven by JetBlue’s increased operations to New York and Avianca’s additional frequencies on its routes to New York, Bogotá, Medellín, and Buenos Aires. Domestic traffic rose by 2.3% YoY, although high airfares continued to weigh on travel demand.

In Armenia, passenger traffic increased by 7.2% YoY. Travel demand has benefited from the introduction of new airlines and routes, as well as increased flight frequencies. Wizz Air recently announced the opening of a new base at Yerevan’s Zvartnots Airport, with two aircraft and eight new direct routes to Europe.

Cargo Volumeand Aircraft Movements

Cargovolume decreased by 8.2% compared to the same month in 2024, with negative YoY contributions from all countries of operations. Performance by country was as follows: Armenia (-12.8%), Brazil (-9.8%), Italy (-8.4%), Ecuador (-7.4%), Uruguay (-7.1%), and Argentina (-6.8%). Argentina, Brazil, and Armenia accounted for 80% of the total cargo volume in August.

Aircraftmovements increased by 7.2% YoY, with positive contributions from all countries of operation, except Uruguay: Armenia (+12.2%), Argentina (+8.5%), Italy (+6.6%), Brazil (+6.3%), Ecuador (+3.4%), and Uruguay (-5.1%). Argentina, Brazil, and Italy accounted for more than 80% of total aircraft movements in August.

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Summary PassengerTraffic, Cargo Volume and Aircraft Movements (2025 vs. 2024)

Aug'25 Aug'24 % Var. YTD'25 YTD'24 % Var.
Passenger Traffic (thousands)
Argentina 4,069 3,584 13.5% 31,063 27,226 14.1%
Italy 1,068 1,001 6.8% 6,654 6,119 8.8%
Brazil<br> ^(1)^ 1,506 1,366 10.2% 10,744 10,166 5.7%
Uruguay 167 179 -6.3% 1,524 1,490 2.3%
Ecuador 450 442 2.0% 3,176 3,149 0.9%
Armenia 679 634 7.2% 3,783 3,577 5.8%
TOTAL 7,940 7,205 10.2% 56,944 51,726 10.1%
(1) Following the<br> friendly termination process concluded in February 2024, CAAP no longer operates Natal<br> airport. Statistics for Natal are available up to February 18, 2024. Excluding Natal<br> for comparison purposes, total passenger traffic YTD was up 10.9% for CAAP and 9.7% for Brazil.
--- ---
Cargo Volume (tons)
--- --- --- --- --- --- ---
Argentina 15,450 16,585 -6.8% 132,299 126,182 4.8%
Italy 747 815 -8.4% 8,350 8,357 -0.1%
Brazil 4,993 5,537 -9.8% 41,177 41,984 -1.9%
Uruguay 2,537 2,730 -7.1% 22,859 20,113 13.7%
Ecuador 2,775 2,996 -7.4% 24,036 25,361 -5.2%
Armenia 3,392 3,888 -12.8% 25,271 23,912 5.7%
TOTAL 29,894 32,551 -8.2% 253,992 245,909 3.3%
****<br><br> <br>Aircraft Movements
Argentina 41,253 38,006 8.5% 315,311 291,646 8.1%
Italy 9,125 8,563 6.6% 60,064 55,838 7.6%
Brazil 13,742 12,933 6.3% 98,405 95,014 3.6%
Uruguay 2,181 2,297 -5.1% 21,998 21,118 4.2%
Ecuador 7,011 6,780 3.4% 52,672 50,963 3.4%
Armenia 4,760 4,244 12.2% 28,370 26,265 8.0%
TOTAL 78,072 72,823 7.2% 576,820 540,844 6.7%

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.

Investor Relations Contact

Patricio Iñaki Esnaola

Email: patricio.esnaola@caairports.com

Phone: +5411 4899-6716

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