Detroit Metropolitan Wayne County Airport (IATA: DTW, ICAO: KDTW), usually called Detroit Metro Airport, Metro Airport locally, or simply DTW, is a major international airport in the United States covering 7,072-acre (11.050 sq mi; 2,862 ha) in Romulus, Michigan, a suburb of Detroit. It is Michigan's busiest airport and one of the world's largest air transportation hubs.
The airport serves as Delta's second busiest hub. Delta, along with SkyTeam partner Air France, occupy the McNamara Terminal, which contains both domestic and international gates and serves as the airline's primary gateway to Asia and its third-busiest gateway to Europe. The airport is a major gateway for tourism in metropolitan Detroit and one of SkyTeam's major Midwestern hubs. It is the second-largest base for Spirit Airlines, which was founded in Metro Detroit and once operated its largest base at Wayne County Airport. Operated by the Wayne County Airport Authority, the airport is one of the nation's most-recently expanded and modernized airports, with six major runways, two terminals, 145 in-service gates, and an on-site Westin Hotel and conference center. The McNamara Terminal Concourse A is the world's second-longest airport terminal building at 1 mi (1.6 km). It is just surpassed by the 1.06 mi (1.71 km) long Kansai International Airport (Beijing Capital Airport's Terminal 3, which opened in 2008 with a total length of 1.8 miles, is actually three, separate structures linked together by underground connectors). Detroit Metopolitan Airport has maintenance facilities capable of servicing and repairing aircraft as large as the Boeing 747. The airport is seven miles from Willow Run Airport (YIP).