Grupo Aeroportuario del Centro Norte : OMA reports a 4.9% increase in December 2012 passenger traffic

• 16 consecutive months of traffic growth

Monterrey, Mexico, January 8, 2013-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 4.9% in December 2012, as compared to December 2011. Domestic traffic increased 6.2%, and international traffic decreased 0.9%.

Traffic volumes have increased for sixteen months in a row, starting in September 2011, as a result of the recovery of the air transport industry in Mexico and OMA's actions in coordination with the government and private sector to promote greater air connectivity in the markets where our airports are located.

Of total December traffic, 97.4% was commercial aviation and 2.6% was general aviation.

Domestic traffic increased in ten airports in December, with the most noteworthy increases in Monterrey (+7.1%), Reynosa (+51.5%), Culiacán (+7.9%), and Mazatlán (+12.6%). In Monterrey, traffic increased principally on the routes to Cancún, León, and Chihuahua. Reynosa traffic increased on the Mexico City route. Culiacán traffic increased on the Tijuana route, while Mazatlán traffic increased on the Mexico City route. The most significant reductions were at the Zacatecas (-13.1%) and Acapulco (-3.4%) airports as a result of reductions on the routes to Mexico City and Toluca, respectively.

International traffic increased in seven airports in December, with the most significant increases in Monterrey (+6.4%) and Culiacán (+163.8%). In Monterrey, traffic benefited from the increase in passengers on the route to Dallas. Chihuahua traffic increased on the Los Angeles route. The largest decreases were at the Mazatlán (-16.9%) and Zacatecas (-33.9%) airports. Mazatlán was affected by reduced traffic on the Houston, Kelowna, and Seattle routes; Zacatecas was affected by reductions on the Chicago and Los Angeles routes. Aeroméxico opened the Monterrey-Laredo route and United opened the Monterrey-Chicago route during December.

The number of flight operations (takeoffs and landings) in December decreased 2.9% as compared to the same month of last year. The number of domestic operations decreased 3.0% and international operations decreased 2.0%.

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 information and expectations and projections about future events. Forward-looking statements may be identified by the words "believe," "expect," "anticipate," "target," "estimate," 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.

About OMA
Grupo Aeroportuario del Centro Norte, S.A.B. de C.V., known as OMA, operates 13 international airports in nine states of central and northern Mexico. OMA's airports serve Monterrey, Mexico's third largest metropolitan area, the tourist destinations of Acapulco, Mazatlán, and Zihuatanejo, and nine other regional centers and border cities. OMA also operates a hotel inside Terminal 2 of the Mexico City airport. OMA employs over 1,000 persons in order to offer passengers and clients, airport and commercial services in facilities that comply with all applicable international safety, security standards, and ISO 9001:2008. OMA's strategic shareholder members are ICA, Mexico's largest engineering, procurement, and construction company, and Aéroports de Paris Management, subsidiary of Aéroports de Paris, the second largest European airports operator. OMA is listed on the Mexican Stock Exchange (OMA) and on the NASDAQ Global Select Market (OMAB).

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