OMA reports May 2010 Traffic

Monterrey, Mexico, June 7, 2010—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 increased 28.8% in May 2010, as compared to May 2009. Domestic traffic increased 25.0%, and international traffic increased 59.4%.

Of total traffic, 96.9% was commercial aviation, and 3.1% was general aviation.

In general terms, the increase in both domestic and international traffic in May 2010 reflects the recovery from the impact of the H1N1 flu outbreak in the 2009 period.

Domestic traffic also benefited from the opening of the Zacatecas-Tijuana route by Volaris.

The total number of flight operations (takeoffs and landings) in the month increased 23.8% as compared to the prior year period.

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 forwardlooking 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.