BWI airport set a record for passenger traffic in July, according to information released Tuesday by Maryland officials.

More than 2.2 million passengers traveled through Baltimore-Washington International Marshall Airport, according to the data. The previous record, 2,120,517 passengers, was set in July 2010, officials said. July’s total of 2,205,035 commcercial passengers was a 1.6 percent increase.

“BWI Marshall is a critical economic engine and international gateway for Maryland and the entire National Capital region,” said Gov. Martin O’Malley (D).  “The airport’s strength and record-setting growth are important for our efforts to attract businesses, tourists, and jobs.”

Southwest Airlines, which is the largest carrier at the BWI, also set a monthly record at BWI, serving 1,211,951 passengers, officials said. Southwest and AirTran Airways, which recently merged, although they still have separate operations, control a third of commercial air traffic in the Washington region.

Officials said Southwest increased its flights at BWI during the peak summer months to a record 195 daily departures.