2Q09 Highlights(1):     --  EBITDA(2) declined by 24.62% to Ps.400.90 million   --  Total passenger traffic was down 26.76%   --  Total revenues declined by 16.10%, due to declines of 17.71% in       aeronautical revenues and 12.99% in non-aeronautical revenues    --  Commercial revenues per passenger increased by 20.29% to Ps.59.29 per       passenger    --  Operating profit declined by 36.33%    --  EBITDA margin was 59.10% compared with 65.78% in 2Q08      1. Unless otherwise stated, all financial figures discussed in this      announcement are unaudited, prepared in accordance with Mexican      Financial Reporting Standards and represent comparisons between the      three-and six-month periods ended June 30, 2009, and the equivalent      three- and six-month periods ended June 30, 2008. Results are      expressed in nominal pesos. Tables state figures in thousands of      pesos, unless otherwise noted. Passenger figures exclude transit and      general aviation passengers. Commercial revenues include revenues      from non-permanent ground transportation and parking lots. All      U.S. dollar figures are calculated at the exchange rate of US$1      = Ps. 13.1722.    2. EBITDA means net income before: provision for taxes, deferred taxes,      deferred employees profit sharing, non-ordinary items, comprehensive      financing cost and depreciation and amortization. EBITDA should not be      considered as an alternative to net income, as an indicator of our      operating performance or as an alternative to cash flow as an      indicator of liquidity. Our management believes that EBITDA provides      a useful measure of our performance that is widely used by investors      and analysts to evaluate our performance and compare it with other      companies. EBITDA is not defined under U.S. GAAP and may be calculated      differently by different companies.     Passenger Traffic   

For the second quarter of 2009, total passenger traffic declined year-over-year by 26.76%. International passenger traffic declined 30.62% while domestic passenger traffic declined by 21.63%.

On April 28, 2009 the World Health Organization announced the outbreak of the H1N1 Influenza in Mexico. As a result, total year-over-year passenger traffic declined 2.1% in April, 50.7% in May and 28.4% in June.

The 30.62% decline in international passenger traffic resulted mainly from a decline of 31.31% in international traffic at the Cancun airport. The 21.63% decline in domestic passenger traffic resulted mainly from declines of 29.77%, 17.41%, 26.17%, 30.56% and 62.66% at the M rida, Cancun, Veracruz, Villahermosa and Cozumel airports, respectively.

For 1H09, total passenger traffic declined by 14.53% compared to 1H08, with domestic passenger traffic down 17.88% and international passenger traffic down 12.30%.

   Table I: Domestic Passengers (in thousands)    Airport          2Q08   2Q09 % Change   1H08   1H09  % Change    Cancun          890.7   735.6 (17.41) 1,675.8 1,391.6 (16.96)   Cozumel          24.1     9.0 (62.66)    47.8    26.0 (45.61)   Huatulco         65.5    77.5  18.32    130.3   160.5  23.18   Merida          302.7   212.6 (29.77)   617.4   451.5 (26.87)   Minatitlan       40.3    31.7 (21.34)    78.7    66.8 (15.12)   Oaxaca          123.6    97.9 (20.79)   254.6   234.9  (7.74)   Tapachula        58.8    47.8 (18.71)   119.9   105.0 (12.43)   Veracruz        235.8   174.1 (26.17)   457.5   381.3 (16.66)   Villahermosa    238.9   165.9 (30.56)   479.8   353.9 (26.24)           TOTAL 1,980.4 1,552.1 (21.63) 3,861.8 3,171.5 (17.88)    Note: Passenger figures exclude transit and general aviation passengers.      Table II: International Passengers (in thousands)    Airport          2Q08   2Q09 % Change   1H08   1H09  % Change    Cancun        2,427.3 1,667.4 (31.31) 5,290.8 4,661.0 (11.90)   Cozumel         131.8    94.9 (28.00)   281.3   226.7 (19.41)   Huatulco          7.6     7.9   3.95     57.9    49.8 (13.99)   Merida           25.7    18.5 (28.02)    61.1    44.0 (27.99)   Minatitlan        1.1     0.7 (36.36)     2.1     1.6 (23.81)   Oaxaca            9.9    12.5  26.26     23.4    30.6  30.77   Tapachula         0.9     0.9      -      2.2     2.0  (9.09)   Veracruz         16.8    14.2 (15.48)    34.2    29.9 (12.57)   Villahermosa     12.6    10.3 (18.25)    25.1    21.8 (13.15)           TOTAL 2,633.7 1,827.3 (30.62) 5,778.1 5,067.4 (12.30)    Note: Passenger figures exclude transit and general aviation passengers.      Table III: Total Passengers (in thousands)    Airport          2Q08   2Q09 % Change   1H08    1H09 % Change    Cancun        3,318.0 2,403.0 (27.58) 6,966.6 6,052.6 (13.12)   Cozumel         155.9   103.9 (33.35)   329.1   252.7 (23.21)   Huatulco         73.1    85.4  16.83    188.2   210.3  11.74   Merida          328.4   231.1 (29.63)   678.5   495.5 (26.97)   Minatitlan       41.4    32.4 (21.74)    80.8    68.4 (15.35)   Oaxaca          133.5   110.4 (17.30)   278.0   265.5  (4.50)   Tapachula        59.7    48.7 (18.43)   122.1   107.0 (12.37)   Veracruz        252.6   188.3 (25.46)   491.7   411.2 (16.37)   Villahermosa    251.5   176.2 (29.94)   504.9   375.7 (25.59)           TOTAL 4,614.1 3,379.4 (26.76) 9,639.9 8,238.9 (14.53)    Note: Passenger figures exclude transit and general aviation passengers.     Consolidated Results for 2Q09   

Total revenues for 2Q09 declined year-over-year by 16.10% to Ps.678.4 million. This was mainly due to declines of:

   --  17.71% in revenues from aeronautical services principally as a result       of the 26.76% decline in passenger traffic; and    --  12.99% in revenues from non-aeronautical services, principally as a       result of the 11.74% decrease in commercial revenues detailed below.  

ASUR classifies commercial revenues as those derived from the following activities: duty-free services, car rental, retail, banking and currency exchange, advertising, teleservices, non-permanent ground transportation, food and beverage, and parking lots.

Commercial revenues fell by 11.74% year-over-year during the quarter, mainly as a result of the decline in passenger traffic generated by the Influenza H1N1 outbreak during the period. There were declines in revenues in the following activities

   --  15.42% in duty-free stores;   --  2.89% in banking and currency exchange services;   --  31.96% in advertising;   --  20.48% in ground transportation;   --  5.71%  in retail operations;    --  22.99% in food and beverage;   --  14.41% in parking lot fees; and    --  13.25% in other revenues   

These declines were partially offset by revenue increases of 31.85% in car rental companies and 10.90% in teleservices.

                   New Retail and Other Commercial Space          Business Name            Type                  Opening Date    Cancun   Mas Business               Gift shop                 April 2009    Merida   Rent A Matic Itza          Car rental company        April 2009    

Total operating costs and expenses for 2Q09 increased 2.04% year over year, primarily as a result of increases of:

   --  8.86% in cost of services, mainly reflecting a Ps.34.0 million       deferred provision that was reversed in 2Q08 as a result of the       personnel reorganization; and    --  5.25% in depreciation and amortization, resulting from the       depreciation of new investments in fixed assets and improvements made       to concession assets.    These increases were partially offset by the following declines:    --  6.46% in administrative expenses;   --  15.95% in concession fees paid to the Mexican government, mainly due       to lower revenues (a factor in the calculation of the fee).    --  24.63% in the technical assistance fee paid to ITA, reflecting the       decline in EBITDA for the quarter (a factor in the calculation of the       fee).   

Operating margin for the quarter declined to 35.86% from 47.26% in 2Q08. This was mainly the result of the 16.10% decline in revenues and the 2.04% increase in costs during the period.

Following the changes in Mexican tax law that took effect January 1, 2008, which established a new flat rate business tax ("Impuesto Empresarial a Tasa Unica", or "IETU") and eliminated the asset tax, the Company evaluated and reviewed its deferred assets and liabilities position under Mexican Financial Reporting Standards.

During 2Q09, ASUR's subsidiaries that pay IETU made provisional tax payments of Ps.23.0 million.

During the quarter, ASUR recognized asset taxes for a total of Ps.8.9 million under the line item Provision for Asset Tax. We do not expect to recover these asset taxes.

Net income for 2Q09 declined 50.84% to Ps.125.44 million from Ps.255.16 million in 2Q08. Earnings per common share for the quarter were Ps.0.4181, or earnings per ADS (EPADS) of US$0.3174 (one ADS represents ten series B common shares). This compares with earnings per share of Ps.0.8505, or EPADS of US$0.6457, for the same period last year.

   Table IV: Summary of Consolidated Results for 2Q09                                    2Q08       2Q09        % Change    Total Revenues                 808,518    678,374       (16.10)   Aeronautical Services          532,630    438,319       (17.71)   Non-Aeronautical Services      275,888    240,055       (12.99)            Commercial Revenues   231,207    204,071       (11.74)   Operating Profit               382,115    243,284       (36.33)   Operating Margin %              47.26%     35.86%      (24.12%)   EBITDA                         531,865    400,901       (24.62)   EBITDA Margin %                 65.78%     59.10%      (10.16%)   Net Income                     255,158    125,439       (50.84)   Earnings per Share              0.8505     0.4181       (50.84)   Earnings per ADS in US         $0.6457     0.3174       (50.84)    Note: U.S. dollar figures are calculated at the exchange rate   of US$1 = Ps. 13.1722      Table V: Commercial Revenues per Passenger for 2Q09                                         2Q08     2Q09     % Change    Total Passengers ('000)             4,691    3,442      (26.63)   Total Commercial Revenues         231,207  204,071      (11.74)      Commercial revenues       from direct operations (1)     44,652   36,466      (18.33)      Commercial revenues excluding       direct operations             186,555  167,605      (10.16)    Total Commercial Revenue per    Passenger                          49.29    59.29       20.29      Commercial revenue       direct operations per       passenger (1)                    9.52    10.59       11.24      Commercial revenue per       passenger (excluding direct       operations)                     39.77    48.70       22.45    Note: For purposes of this table, approximately 76,700 and 62,300         transit and general aviation passengers are included for 2Q08         and 2Q09, respectively.   (1)   Revenues from direct commercial operations represent ASUR's         operation of convenience stores in airports and the direct sale         of advertising space.      Table VI: Operating Costs and Expenses for 2Q09                                         2Q08      2Q09    % Change    Cost of Services                   180,271  196,237       8.86   Administrative                      28,006   26,196      (6.46)   Technical Assistance                27,994   21,100     (24.63)   Concession Fees                     40,382   33,940     (15.95)   Depreciation and Amortization      149,750  157,617       5.25                              TOTAL   426,403  435,090       2.04    Note: Figures in nominal pesos.      Consolidated Results for 1H09   

Total revenues for 1H09 declined year-over-year by 0.91% to Ps.1,663.0 million. This was mainly due to a 3.88% decline in revenues from aeronautical services as a result of the 14.53% decline in passenger traffic during the period, partially offset by the increase in rates that was approved in 1Q09. This decline in revenues from aeronautical services was partially offset by a 5.16% increase in revenues from non-aeronautical services, principally as a result of the 7.68% rise in commercial revenues detailed below.

Commercial revenues for 1H09 rose by 7.68% year-over-year, principally as a result of revenue increases in the following areas:

   --  11.29% in duty-free stores;   --  9.44% in retail operations;   --  0.50% in advertising;   --  10.22% in banking and currency exchange services;   --  14.04% in teleservices;   --  32.67% in car rental companies; and    --  7.90% in other income.  

These increases were partially offset by revenue declines in the following areas:

   --  8.80% in parking lot fees;   --  5.44% in ground transportation services; and    --  0.67% in food and beverage.