OMA reports July 2009 passenger traffic

Monterrey, Mexico, August 6, 2009—Mexican airport operator Grupo Aeroportuario del Centro Norte, S.A.B. de C.V., known as OMA (NASDAQ: OMAB; BMV: OMA), reports that terminal passenger traffic at its 13 airports decreased 16.5% in July 2009, as compared to July 2008. Domestic traffic decreased 14.3%, and international traffic decreased 29.3%.

Total passenger traffic volumes during July decreased at a slower rate than during the prior five months. This effect is principally the result of the performance of domestic traffic.

Domestic traffic at the Durango and Culiacán airports increased 18.5% and 7.9%, respectively. The number of passengers carried by Interjet rose in both airports, and Culiacán benefitted from the performance of VivaAerobus and Click Mexicana. Two domestic routes were opened during the month: Monterrey-Veracruz-Cancún by Mexicana Link on July 1 and Culiacán-Tijuana by Interjet starting July 8.

The airports with the largest traffic reductions were Monterrey, Ciudad Juárez, and Acapulco, principally because of the departure from the market of Aerocalifornia, Avolar, Aladia, and Alma, the temporary suspension of Aviacsa effective July 6, and a reduction in the number of passengers carried by Interjet at these airports.

International traffic decreased as compared to July 2008, with the Monterrey, Mazatlán, Acapulco, and Zihuatanejo airports the most affected. The principal factors in the reduction in passengers were a reduction in frequencies by Continental; the cancellation of routes by Mexicana, Aeroméxico, and Aviacsa; and the departure of Delta from most of OMA’s airports since August 2008. Offsetting these effects in part, VivaAerobus opened the Monterrey-Las Vegas route on July 1, and Aeroméxico Connect reopened the Monterrey-San Antonio route on July 9.

This press release may contain forward-looking information and statements. Forward-looking statements are statements that are not historical facts. These statements are only predictions based on our current expectations and projections about future events. Forward-looking statements may be identified by the words “believe,” “expect,” “anticipate,” “target,” or similar expressions. While OMA's management believes that the expectations reflected in such forward-looking statements are reasonable, investors are cautioned that forward-looking information and statements are subject to various risks and uncertainties, many of which are difficult to predict and are generally beyond the control of OMA, that could cause actual results and developments to differ materially from those expressed in, or implied or projected by, the forward-looking information and statements. These risks and uncertainties include, but are not limited to, those discussed in our most recent annual report filed on Form 20-F under the caption “Risk Factors.” OMA undertakes no obligation to publicly update its forward-looking statements, whether as a result of new information, future events, or otherwise.