Southwest Airlines Co. operates Southwest Airlines and AirTran Airways, passenger airlines that provide scheduled air transportation in the United States and near-international markets. As of December 31, 2012, the total fleet operated by Southwest and AirTran combined consisted of 694 aircraft, including 606 Boeing 737s and 88 Boeing 717s. Southwest principally provides point-to-point, rather than hub-and-spoke, service. AirTran principally provides hub-and-spoke, rather than point-to-point, service, with approximately half of AirTran�s flights originating or terminating at its base of operation in Atlanta, Georgia. AirTran also serves a number of markets with non-stop service from smaller bases of operation in Baltimore, Maryland; Milwaukee, Wisconsin; and Orlando, Florida. In December 2013, Southwest Airlines Co acquired 12 takeoff and landing slots at New York's LaGuardia Airport being divested by American Airlines as part of its merger with US Airways.