Mexican airport operator Grupo Aeroportuario del Centro Norte (OMA) reported a 4.3% rise in passenger traffic at its 13 airports during April 2012.
The airport operator revealed that traffic volume has increased for eight consecutive months from September last year.
Domestic passenger traffic rose 4.7% and international traffic 1.9%, while around 96.9% of the traffic was contributed by commercial aviation and 3.1% by general aviation.
During the period, eight of its airports reported a rise in domestic traffic, which included a 4.7% increase in traffic in Monterrey airport, 9.5% in Culiacan, 13.1% in Chihuahua and a 37.7% rise in Reynosa.
According to OMA, domestic traffic at Monterrey had increased on the routes to Mexico City and Cancún, Culiacán's traffic increased on the Tijuana route, while the Chihuahua and Reynosa airports reported rises on Mexico City routes.
OMA's Zihuatanejo airport registered the highest decline in passenger traffic, with a 15.1% slip, which was due to the reduction in traffic on the Mexico City and Toluca routes.
Monterrey's international traffic rose 16.6%, with an increase in passenger numbers on the routes to Las Vegas, San Antonio, Panama and Dallas, while San Luis Potosi airport reported a high of 41.8% during the period, due to an increase in traffic on the Houston route.
Mazatlán, Acapulco and Zihuatanejo airports reported the largest declines in international passenger traffic, with 22.1%, 45.8% and 12.6% declines, respectively.
Mazatlán airport's passenger traffic declined on routes to Seattle, Acapulco's to Houston, Phoenix, and Dallas, and Zihuatanejo on routes to Houston and Los Angeles.
OMA reported a 6.2% decline in total flight operations in April, when compared to the same period in 2011, with a 7% decline in domestic flights and 1% decrease in international flights.