Contacts:

ASUR

Lic. Adolfo Castro (52) 55-5284-0408 acastro@asur.com.mx

Breakstone Group Susan Borinelli (646) 330-5907

sborinelli@breakstone-group.com

ASUR Announces Total Passenger Traffic for

November 2011 Up 8.3% Year over Year

Mexico City, December 5, 2011 - Grupo Aeroportuario del Sureste, S.A.B. de C.V. (NYSE: ASR; BMV: ASUR) (ASUR), today announced that total passenger traffic for November 2011 increased by 8.3% when compared to November 2010.

All figures in this announcement reflect comparisons between November 1 through

November 30, 2010 and 2011. Transit and general aviation passengers are excluded.

Domestic

Airport

November

2010

November

2011 % Change

Cancún 272,203 304,341 11.8
Cozumel 3,582 6,640 85.4
Huatulco 24,711 32,579 31.8
Mérida 87,309 102,738 17.7
Minatitlán 8,451 10,064 19.1
Oaxaca 31,963 32,015 0.2
Tapachula 12,502 12,349 (1.2)
Veracruz 56,921 62,774 10.3
Villahermosa 60,569 72,051 19.0

Total Domestic 558,211 635,551 13.9

International

Airport

November

2010

November

2011 % Change

Cancún 629,319 655,049 4.1
Cozumel 23,071 20,440 (11.4)
Huatulco 4,218 4,791 13.6
Mérida 10,362 7,878 (24.0)
Minatitlán 276 427 54.7
Oaxaca 3,803 4,739 24.6
Tapachula 355 544 53.2
Veracruz 4,828 7,813 61.8
Villahermosa 3,979 3,800 (4.5)

Total International 680,211 705,481 3.7

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Airport November

2010

Total

November

2011

% Change

Cancún 901,522 959,390 6.4
Cozumel 26,653 27,080 1.6
Huatulco 28,929 37,370 29.2
Mérida 97,671 110,616 13.3
Minatitlán 8,727 10,491 20.2
Oaxaca 35,766 36,754 2.8
Tapachula 12,857 12,893 0.3
Veracruz 61,749 70,587 14.3
Villahermosa 64,548 75,851 17.5
ASUR Total 1,238,422 1,341,032 8.3

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.

- END -

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Passenger Traffic November 2011: 8.3% Increase YOY