Wayne County began to plan an airport in the western townships of the county as early as 1927. The airport serves over 140 destinations and was named the best large U.S.

Metro Airport serves the Metropolitan Detroit area the Toledo, Ohio, area about 40 miles (64 km) south the Ann Arbor area to the west Windsor, Ontario and Southwestern Ontario in Canada. Detroit Metropolitan Airport has maintenance facilities capable of servicing and repairing aircraft as large as the Boeing 747-400. Operated by the Wayne County Airport Authority, the airport has six runways, two terminals, and 129 in-service gates. The airport has service to 30 international destinations and service to 39 states across the United States. Detroit serves as Delta's main gateway to Asia for the Eastern United States. The airport is a major hub for Delta Air Lines and is also a base for Spirit Airlines. The Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021 categorized it as a large hub primary commercial service facility.

It is the primary international airport serving Detroit and is Michigan's busiest airport. Detroit Metropolitan Wayne County Airport ( IATA: DTW, ICAO: KDTW, FAA LID: DTW), usually called Detroit Metro Airport, Detroit Metro, Metro Airport, or simply DTW, is a major international airport in the United States covering 4,850 acres (1,960 ha) in Romulus, Michigan.

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