ASUR Announces Total Passenger Traffic for January 2011 Unchanged Year over Year

MEXICO CITY, Feb. 9, 2011 /PRNewswire/ -- Grupo Aeroportuario del Sureste, S.A.B. de C.V. (NYSE: ASR; BMV: ASUR) (ASUR), today announced that total passenger traffic for January 2011 was flat compared to January 2010.

All figures in this announcement reflect comparisons between January 1 through January 31, 2011 and 2010. Transit and general aviation passengers are excluded.

Domestic -------- Airport January January % Change 2010 2011 Cancun 245,306 248,098 1.1 Cozumel 3,802 3,134 (17.6) Huatulco 27,607 27,550 (0.2) Merida 82,913 79,995 (3.5) Minatitlan 9,733 7,430 (23.7) Oaxaca 33,749 25,753 (23.7) Tapachula 15,905 11,900 (25.2) Veracruz 55,277 54,958 (0.6) Villahermosa 53,243 56,842 6.8 Total Domestic 527,535 515,660 (2.3) International ------------- Airport January January % Change 2010 2011 Cancun 908,644 917,096 0.9 Cozumel 35,444 40,950 15.5 Huatulco 15,691 13,010 (17.1) Merida 8,302 9,892 19.2 Minatitlan 422 347 (17.8) Oaxaca 6,425 4,952 (22.9) Tapachula 398 625 57.0 Veracruz 5,612 5,949 6.0 Villahermosa 4,140 3,911 (5.5) Total International 985,078 996,732 1.2 Total ----- Airport January January % Change 2010 2011 Cancun 1,153,950 1,165,194 1.0 Cozumel 39,246 44,084 12.3 Huatulco 43,298 40,560 (6.3) Merida 91,215 89,887 (1.5) Minatitlan 10,155 7,777 (23.4) Oaxaca 40,174 30,705 (23.6) Tapachula 16,303 12,525 (23.2) Veracruz 60,889 60,907 0.0 Villahermosa 57,383 60,753 5.9 ASUR Total 1,512,613 1,512,392 0.0 About ASUR:

Grupo Aeroportuario del Sureste, S.A.B. de C.V. (ASUR) is a Mexican airport operator with concessions to operate, maintain and develop the airports of Cancun, Merida, Cozumel, Villahermosa, Oaxaca, Veracruz, Huatulco, Tapachula and Minatitlan in the southeast of Mexico. The Company 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.

Grupo Aeroportuario del Sureste, S.A.B. de C.V.

CONTACT: ASUR: Lic. Adolfo Castro, [phone],
[e-mail]; or Breakstone Group: Susan Borinelli, [phone],
[e-mail], or Maura Gedid, [phone],
[e-mail]