6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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 August 2023

GRUPO AEROPORTUARIO DEL SURESTE, S.A.B. de C.V.

(SOUTHEAST AIRPORT GROUP)

(Translation of Registrant’s Name Into English)

México

(Jurisdiction of incorporation or organization)

Bosque de Alisos No. 47A– 4th Floor

Bosques de las Lomas

05120 México, D.F.

(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.)

(Indicate by check mark whether the registrant by furnishing the information contained in this form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.)

(If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- .)

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: August 7, 2023

Exhibit 99.1

ASUR Announces Total Passenger Traffic for July 2023

Passenger traffic increased year-on-year by 7.8% in Mexico and 26.7% in Puerto Rico and decreased 16.7% in Colombia

MEXICO CITY, Aug. 7, 2023 /PRNewswire/ -- Grupo Aeroportuario del Sureste, S.A.B. de C.V. (NYSE: ASR; BMV: ASUR), ASUR, a leading international airport group with operations in Mexico, the U.S. and Colombia, today announced that passenger traffic for July 2023 reached a total of 6.5 million passengers, 4.9% above the levels reported in June 2022.

Passenger traffic increased 7.8% year-on-year in Mexico and 26.7% in Puerto Rico, while Colombia posted a 16.7% decrease. Passenger traffic growth in Mexico and Puerto Rico was mainly driven by increases of 13.3% and 24.7% in domestic traffic and 3.0% and 41.7% in international traffic, respectively. Passenger traffic in Colombia was negatively affected by the suspension of operations of two local airlines since early 2023.

This announcement reflects comparisons between the periods July 1 through July 31, 2023 and 2022. Transit and general aviation passengers are excluded from traffic measures in Mexico and Colombia.

About ASUR Grupo Aeroportuario del Sureste, S.A.B. de C.V. (ASUR) is a leading international airport operator with a portfolio of concessions to operate, maintain and develop 16 airports in the Americas. This comprises nine airports in southeast Mexico, including Cancun Airport, the most important tourist destination in Mexico, the Caribbean and Latin America, and six airports in northern Colombia, including Medellin international airport (Rio Negro), the second busiest in Colombia. ASUR is also a 60% JV partner in Aerostar Airport Holdings, LLC, operator of the Luis Muñoz Marín International Airport serving the capital of Puerto Rico, San Juan. San Juan's Airport is the island's primary gateway for international and mainland-US destinations and was the first, and currently the only major airport in the US to have successfully completed a public–private partnership under the FAA Pilot Program. Headquartered in Mexico, ASUR is listed both on the Mexican Bolsa, where it trades under the symbol ASUR, and on the NYSE in the U.S., where it trades under the symbol ASR. One ADS represents ten (10) series B shares. For more information, visit www.asur.com.mx.

CONTACT: ASUR, Lic. Adolfo Castro, +52-55-5284-0408, acastro@asur.com.mx; InspIR Group, Susan Borinelli, +1-646-330-5907, susan@inspirgroup.com