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.

Dominated by low-cost carrier Southwest Airlines, Midway is the Dallas-based carrier's largest focus city as of 2011. Both the Stevenson Expressway and Chicago Transit Authority's Orange Line provide passengers access to downtown Chicago. Midway Airport is the second largest passenger airport in the Chicago metropolitan area, as well as the state of Illinois, after Chicago O'Hare International Airport

Starting in early 2009, a construction project added a new walkway and food court to Concourse A. The project also connected gates A4A and A4B to the main A concourse. Expansions were completed in the spring of 2010.