Chicago Midway International Airport (IATA: MDW, ICAO: KMDW), also known simply as Midway Airport is an airport in Chicago, Illinois, located on the city's southwest side, eight miles from Chicago's Loop.

Midway is heavily used by low-cost carriers, such as AirTran Airways and Southwest Airlines, and to a lesser extent by legacy carriers, such as Delta Air Lines and Northwest Airlines

In 2007, 19,378,885 passengers traveled through Chicago Midway. Southwest is the dominant carrier at Midway, controlling 29 of the airport's 43 gates. Currently, the airline offers 227 daily departures to 47 destinations. AirTran is the second largest carrier, occupying 5 out of the 43 gates at Midway, and offering over 15 daily nonstop flights to 5 destinations; 3 of which are served year-round.