ASUR (NYSE: ASR) March 2026 traffic rises 0.6% on strong Colombia

Rhea-AI Filing Summary

Grupo Aeroportuario del Sureste (ASUR) reported that total passenger traffic for March 2026 reached 6.6 million passengers, a 0.6% increase compared with March 2025. Traffic in Colombia grew 12.5%, supported by double‑digit gains in both domestic and international passengers.

By contrast, passenger traffic declined 2.4% in Mexico and 2.3% in Puerto Rico, as weaker international volumes in Mexico and lower domestic traffic in Puerto Rico offset growth in Colombia. Year to date, total traffic rose 1.9% versus the same period of 2025.

Insights

Airports & Infrastructure Analyst

ASUR shows modest overall traffic growth, with strong Colombia offset by softer Mexico and Puerto Rico.

Total March 2026 traffic increased 0.6% to 6.59 million passengers, while year-to-date volumes rose 1.9%. The standout region is Colombia, where traffic grew 12.5%, driven by 12.3% domestic and 13.2% international gains.

In Mexico, total traffic fell 2.4%, with international down 4.0% and domestic roughly flat, and Puerto Rico declined 2.3%, mainly from weaker domestic traffic. The timing shift of Easter from April in 2025 to late March–early April in 2026 may influence year-on-year comparisons, so sustained trends will be clearer as additional monthly data becomes available.

Key Figures

Total passengers March 2026: 6,587,203 passengers Total traffic growth March 2026: 0.6% Colombia traffic growth March 2026: 12.5% +5 more

8 metrics

Total passengers March 2026 6,587,203 passengers Total traffic, March 2026 vs 6,546,215 in March 2025

Total traffic growth March 2026 0.6% Year-on-year change in total passengers for March

Colombia traffic growth March 2026 12.5% Year-on-year change in total Colombia passengers

Mexico traffic change March 2026 -2.4% Year-on-year change in total Mexico passengers

Puerto Rico traffic change March 2026 -2.3% Year-on-year change at San Juan (SJU)

Year-to-date total passengers 2026 18,960,991 passengers Year to date through March 31, 2026

Year-to-date traffic growth 2026 1.9% Year-on-year change in total passengers year to date

Rionegro March 2026 passengers 1,204,489 passengers Total traffic at MDE, March 2026, up 12.5% YoY

Key Terms

public–private partnership, ADS, passenger traffic, domestic traffic, +2 more

6 terms

public–private partnership financial

"San Juan Airport was the first and remains the only major airport in the U.S. to have successfully completed a public–private partnership"

ADS financial

"One ADS represents ten (10) B-series shares."

Ads are paid promotional messages a company places across media — online, on TV, in print, or on social platforms — to attract customers, explain products, or shape public perception. For investors, ads matter because they drive sales growth, affect how much a company must spend to win customers, and influence brand strength and long-term value. Ads can also create regulatory or reputational risk if claims are misleading, which can affect profits and stock price.

passenger traffic financial

"passenger traffic for March 2026 reached a total of 6.6 million passengers"

domestic traffic financial

"Traffic growth in Colombia was driven by increases of 12.3% in domestic traffic"

Domestic traffic is the flow of customers, users, shipments or activity a business sees inside its home country — for example store visits, website visitors, deliveries or passengers within national borders. Investors watch it because it shows how well a company is serving and growing its local market, reveals dependence on one economy, and affects revenue, costs and risk exposure; think of it like foot traffic through a mall that drives most of a store’s sales.

international traffic financial

"Traffic growth in Colombia was driven by increases of 12.3% in domestic traffic and 13.2% in international traffic."

International traffic means people, data, shipments or transactions that cross national borders to use a product, service or platform—for example website visits, phone calls, flights or packaged goods moving between countries. Investors care because the amount and growth of international traffic show how widely a business reaches foreign customers, expose it to currency and regulatory risks, and signal opportunities for revenue expansion much like a store gaining shoppers from new neighborhoods.

airport operator financial

"is a leading international airport operator with a portfolio of concessions"

Form 6-K: How Foreign Companies Report to the SEC →

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 April 2026

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.)

Form 20-F  x  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.)

Yes  ¨ No  x

(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.

Grupo Aeroportuario del Sureste, S.A.B. de C.V.
By:	/s/ ADOLFO CASTRO RIVAS
	Adolfo Castro Rivas
	Chief Executive Officer

Date: April 7, 2026

Exhibit 99.1

Contacts:
ASUR Lic. Adolfo Castro +52-55-5284-0408 acastro@asur.com.mx		InspIR Group Susan Borinelli +1-646-330-5907 susan@inspirgroup.com
Lic. David Barlow +52-55-5284-0483 dbarlow@asur.com.mx

ASUR Announces Total Passenger Traffic for March 2026

Passenger traffic increased year-on-year by 12.5% in Colombia and decreased by 2.4% in Mexico and 2.3% in Puerto Rico

Mexico City, April 7, 2026 - 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 March 2026 reached a total of 6.6 million passengers, representing an increase of 0.6% compared to March 2025.

Passenger traffic showed a year-on-year increase of 12.5% in Colombia and decreased 2.4% in Mexico and 2.3% in Puerto Rico. Traffic growth in Colombia was driven by increases of 12.3% in domestic traffic and 13.2% in international traffic. Mexico reported declines of 4.0% in international traffic and 0.1% in domestic traffic, while in Puerto Rico international traffic increased 1.0% and domestic traffic declined 2.7%.

All figures in this statement reflect comparisons between the period from March 1 to March 31, 2026, and from March 1 to March 31, 2025. During 2025, Easter Week took place from April 13 to April 20, while this year it took place from March 29 to April 5. Transit and general aviation passengers are only excluded for Mexico and Colombia.

Passenger Traffic Summary
	March		% Chg		Year to date		% Chg
	2025	2026			2024	2025
Mexico	3,902,720	3,809,310	(2.4)		10,945,137	10,937,975	(0.1)
Domestic Traffic	1,593,163	1,590,992	(0.1)		4,580,484	4,545,394	(0.8)
International Traffic	2,309,557	2,218,318	(4.0)		6,364,653	6,392,581	0.4
San Juan, Puerto Rico	1,323,498	1,292,943	(2.3)		3,608,582	3,529,798	(2.2)
Domestic Traffic	1,189,079	1,157,220	(2.7)		3,227,246	3,141,313	(2.7)
International Traffic	134,419	135,723	1.0		381,336	388,485	1.9
Colombia	1,319,997	1,484,950	12.5		4,046,354	4,493,218	11.0
Domestic Traffic	1,020,202	1,145,690	12.3		3,078,656	3,451,434	12.1
International Traffic	299,795	339,260	13.2		967,698	1,041,784	7.7
Total Traffic	6,546,215	6,587,203	0.6		18,600,073	18,960,991	1.9
Domestic Traffic	3,802,444	3,893,902	2.4		10,886,386	11,138,141	2.3
International Traffic	2,743,771	2,693,301	(1.8)		7,713,687	7,822,850	1.4

ASUR Page 1 of 3 

Mexico Passenger Traffic
		March		% Chg		Year to date		% Chg
		2025	2026			2025	2026
Domestic Traffic		1,593,163	1,590,992	(0.1)		4,580,484	4,545,394	(0.8)
CUN	Cancun	794,115	747,556	(5.9)		2,287,768	2,121,630	(7.3)
CZM	Cozumel	16,421	19,199	16.9		52,559	56,761	8.0
HUX	Huatulco	53,880	52,484	(2.6)		160,129	153,222	(4.3)
MID	Merida	280,523	309,513	10.3		807,366	896,902	11.1
MTT	Minatitlan	12,778	11,840	(7.3)		36,336	32,572	(10.4)
OAX	Oaxaca	136,403	130,925	(4.0)		391,012	379,188	(3.0)
TAP	Tapachula	44,434	42,209	(5.0)		129,462	123,865	(4.3)
VER	Veracruz	140,281	152,061	8.4		383,896	420,848	9.6
VSA	Villahermosa	114,328	125,205	9.5		331,956	360,406	8.6
International Traffic		2,309,557	2,218,318	(4.0)		6,364,653	6,392,581	0.4
CUN	Cancun	2,142,355	2,054,234	(4.1)		5,897,448	5,911,466	0.2
CZM	Cozumel	56,983	53,059	(6.9)		150,667	146,277	(2.9)
HUX	Huatulco	27,430	29,635	8.0		80,426	89,596	11.4
MID	Merida	39,066	41,830	7.1		111,751	121,989	9.2
MTT	Minatitlan	604	639	5.8		1,820	2,030	11.5
OAX	Oaxaca	26,427	20,510	(22.4)		74,635	68,330	(8.4)
TAP	Tapachula	2,472	2,336	(5.5)		5,584	6,323	13.2
VER	Veracruz	10,887	11,914	9.4		33,201	36,221	9.1
VSA	Villahermosa	3,333	4,161	24.8		9,121	10,349	13.5
Traffic Total Mexico		3,902,720	3,809,310	(2.4)		10,945,137	10,937,975	(0.1)
CUN	Cancun	2,936,470	2,801,790	(4.6)		8,185,216	8,033,096	(1.9)
CZM	Cozumel	73,404	72,258	(1.6)		203,226	203,038	(0.1)
HUX	Huatulco	81,310	82,119	1.0		240,555	242,818	0.9
MID	Merida	319,589	351,343	9.9		919,117	1,018,891	10.9
MTT	Minatitlan	13,382	12,479	(6.7)		38,156	34,602	(9.3)
OAX	Oaxaca	162,830	151,435	(7.0)		465,647	447,518	(3.9)
TAP	Tapachula	46,906	44,545	(5.0)		135,046	130,188	(3.6)
VER	Veracruz	151,168	163,975	8.5		417,097	457,069	9.6
VSA	Villahermosa	117,661	129,366	9.9		341,077	370,755	8.7

US Passenger Traffic, San Juan Airport (LMM)
	March		% Chg		Year to date		% Chg
	2025	2026			2025	2026
SJU Total	1,323,498	1,292,943	(2.3)		3,608,582	3,529,798	(2.2)
Domestic Traffic	1,189,079	1,157,220	(2.7)		3,227,246	3,141,313	(2.7)
International Traffic	134,419	135,723	1.0		381,336	388,485	1.9

Colombia Passenger Traffic Airplan
		March		% Chg		Year to date		% Chg
		2025	2026			2025	2026
Domestic Traffic		1,020,202	1,145,690	12.3		3,078,656	3,451,434	12.1
MDE	Rionegro	770,416	865,229	12.3		2,317,847	2,635,778	13.7
EOH	Medellin	91,152	94,536	3.7		273,442	272,660	(0.3)
MTR	Monteria	109,026	136,774	25.5		350,626	403,189	15.0
APO	Carepa	15,167	16,480	8.7		40,163	44,887	11.8
UIB	Quibdo	27,064	30,571	13.0		78,443	88,341	12.6
CZU	Corozal	7,377	2,100	(71.5)		18,135	6,579	(63.7)
International Traffic		299,795	339,260	13.2		967,698	1,041,784	7.7
MDE	Rionegro	299,795	339,260	13.2		967,698	1,041,784	7.7
EOH	Medellin
MTR	Monteria	-	-			-	-
APO	Carepa	-	-			-	-
UIB	Quibdo	-	-			-	-
CZU	Corozal	-	-			-	-
Traffic Total Colombia		1,319,997	1,484,950	12.5		4,046,354	4,493,218	11.0
MDE	Rionegro	1,070,211	1,204,489	12.5		3,285,545	3,677,562	11.9
EOH	Medellin	91,152	94,536	3.7		273,442	272,660	(0.3)
MTR	Monteria	109,026	136,774	25.5		350,626	403,189	15.0
APO	Carepa	15,167	16,480	8.7		40,163	44,887	11.8
UIB	Quibdo	27,064	30,571	13.0		78,443	88,341	12.6
CZU	Corozal	7,377	2,100	(71.5)		18,135	6,579	(63.7)

ASUR Page 2 of 3 

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 across the Americas. The Company operates nine airports in southeast of Mexico, including Cancún Airport, the largest tourist gateway in Mexico, the Caribbean, and Latin America; as well as six airports in northern Colombia, including Medellin international airport (Rionegro), the second busiest in Colombia. 

ASUR also holds a 60% interest in Aerostar Airport Holdings, LLC, operator of Luis Muñoz Marin International Airport in San Juan, the capital of Puerto Rico, the island’s primary international gateway. San Juan Airport was the first and remains the only major airport in the U.S. to have successfully completed a public–private partnership under the FAA Pilot Program. ASUR has recently expanded into airport commercial services through ASUR US, which partners with airports and airlines to deliver enhanced retail and passenger experiences. ASUR Airports operates at major U.S. hubs, including Los Angeles International, Chicago O’Hare, and John F. Kennedy International, and has a track record of outperforming U.S. commercial revenue benchmarks.

Headquartered in Mexico, ASUR is listed on both the Mexican Bolsa (BMV) under the symbol ASUR, and on the NYSE in the U.S., where it trades under the symbol ASR. One ADS represents ten (10) B-series shares. For further information, visit www.asur.com.mx

-    END    -

ASUR Page 3 of 3 

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Press Releases

• EX-99.1 EXHIBIT 99.1 151.6 KB