Unassociated Document
Washington, D.C. 20549
For the month of April 2011

 (Translation of Registrant’s Name Into English)

(Jurisdiction of incorporation or organization)
Aeropuerto Internacional de Monterrey
Zona de Carga
Carretera Miguel Alemán, Km. 24 s/n
66600 Apodaca, Nuevo León, Mexico

 (Address of principal executive offices)
(Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.)
Form 20-F  X   Form 40-F
(Indicate by check mark whether the registrant by furnishing the information contained in this form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.)
Yes      No  X  
(If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-             .)



OMA reports March 2011 passenger traffic

Monterrey, Mexico, April 8, 2011—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 7.2% in March 2011, as compared to March 2010. Domestic traffic decreased 4.7%, and international traffic decreased 16.5%.
The Easter holiday travel period occurred in March 2010 and will take place in April this year, affecting comparisons of March 2011 with March 2010.
Of total March traffic, 96.8% was commercial aviation, and 3.2% was general aviation.
Domestic traffic increased in four airports in March, with the most noteworthy increases in Torreón and Tampico. In Torreón, traffic increased principally on the route to Mexico City; in Tampico, traffic increased principally on the Monterrey route. During March VivaAerobus opened four new routes to Mexico City from our airports in Ciudad Juárez, Culiacán, Tampico and Torreón. Traffic decreased most at the airports in Chihuahua, Culiacán, Ciudad Juárez, and Acapulco. The reduction in Chihuahua was principally on the Toluca and Guadalajara routes. The suspension of the airlines of Grupo Mexicana continues to affect traffic at Culiacán and Acapulco. In Ciudad Juárez and Culiacán the reduction in traffic was principally on their Monterrey routes.
International traffic decreased most significantly in Acapulco, Mazatlán, and Zacatecas. Mazatlán and Zacatecas continue to be affected by Grupo Mexicana’s suspension. Acapulco traffic was also affected by a reduction in passengers on the Houston and Dallas routes, while Mazatlán had lower traffic on the Phoenix, Minneapolis, and Regina, Saskatchewan routes.
The total number of flight operations (takeoffs and landings) in the January-March period decreased 6.5% as compared to the prior year period. Domestic flights decreased 7.6%, and international flights increased 0.9%.





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.
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 and commercial areas 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). For more information, please visit us at:

Website: http://www.oma.aero
Twitter: http://twitter.com/OMAeropuertos
Facebook: http://www.facebook.com/pages/OMA/137924482889484.



Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
Grupo Aeroportuario del Centro Norte, S.A.B. de C.V.
By: /s/  José Luis Guerrero Cortés                                  
        José Luis Guerrero Cortés
        Chief Financial Officer
Date: April 11, 2011