OMA Reports October 2009 Traffic

MONTERREY, Mexico, Nov. 9, 2009 (GLOBE NEWSWIRE) -- 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
12.4% in October 2009, as compared to October 2008. Domestic traffic decreased
11.6%, and international traffic decreased 17.0%.

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

Total Passengers*
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Change Jan-Oct Jan-Oct Change
(Thousand) Oct-08 Oct-09 % 2008 2009 %

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Domestic 898,388 793,869 (11.6) 9,973,434 8,144,379 (18.3)
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International 140,260 116,471 (17.0) 1,985,308 1,490,788 (24.9)
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OMA Total 1,038,648 910,340 (12.4) 11,958,742 9,635,167 (19.4)
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* Terminal passengers: includes passengers on the three types of
aviation (commercial, charter, and general aviation), and excludes
passengers in transit.
Domestic traffic grew at the Culiacan, Durango, and Mazatlan airports by 14.8%,
7.7%, and 7.0%, respectively. The performance of VivaAerobus, Aeromar, and Grupo
Aeromexico were noteworthy. VivaAerobus opened the Mazatlan-La Paz route on
October 1 and Reynosa-Veracruz on October 2. Aeromar opened the Monterrey-San
Luis Potosi route on October 5. These factors were offset by the suspension of
Aviacsa (suspended since July 6, 2009), the departure from the markets of Alma
and Aladia, and a reduction in traffic on Interjet and Magnicharter. The
Monterrey, Acapulco, and Ciudad Juarez airports had the largest traffic
reductions.

International traffic decreased principally because of the cancellation of
international routes by Continental, Grupo Aeromexico, and Alaska Airlines, in
addition to the suspension of Aviacsa. The Monterrey, Mazatlan, Acapulco, and
San Luis Potosi airports were the most affected. On the other hand,
international traffic at Zacatecas increased 22.6% as a result of growth on
traffic on the Chicago, Oakland, and Los Angeles routes.

The total number of flight operations (takeoffs and landings) in October 2009
decreased 8.6% as compared to October 2008.

The complete traffic report is available at http://ir.oma.aero.

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, Mazatlan, and Zihuatanejo, and nine other regional
centers and border cities. OMA employs over 950 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
9001:2000. OMA's strategic shareholder members are ICA, Mexico's largest
engineering, procurement, and construction company, and Aeroports de Paris
Management, subsidiary of Aeroports 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). Please visit our website, www.oma.aero.

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CONTACT: Grupo Aeroportuario del Centro Norte
Jose Luis Guerrero Cortes, CFO
+52.81.8625.4300 ext.308
vbravo@oma.aero

Zemi Communications
Daniel Wilson
+1.212.689.9560
dbmwilson@zemi.com