OMA reports September 2009 Traffic

Monterrey, Mexico, October 7, 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 16.8% in September 2009, as compared to September 2008. Domestic traffic decreased 16.4%, and international traffic decreased 19.4%.

Of total traffic, 97.5% was commercial aviation, and 2.5% was general aviation.

Domestic traffic decreased principally because of the suspension of Aviacsa (suspended since July 6, 2009) and the departure from the markets of Alma and Aladia. The Monterrey, Acapulco, and Ciudad Juárez airports had the largest traffic reductions. Positive factors included the performance of VivaAerobus and Aeromar and the opening of the Chihuahua-Torreón-Guadalajara and Monterrey-Querétaro routes by Mexicana Link. The Culiacán, Durango, and Mazatlán airports reported domestic traffic growth of 10.0%, 4.7%, and 3.1%, respectively.

International traffic decreased principally because of the cancellation of international routes by Mexicana and Aeroméxico; the suspension of Aviacsa; the departure of Aladia; and a reduction in passengers on several of the international carriers. Monterrey, Mazatlán, and Chihuahua were the most affected. International traffic at Zacatecas increased 24.9% as a result of growth on traffic on the Chicago and Oakland routes.

The total number of flight operations (takeoffs and landings) in September 2009 decreased 10.9% as compared to September 2008.

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.