Ten things you may not know about King County International Airport

high on finalKing County International Airport is one of the busiest general aviation airports in the United States. But that’s not all. It also ranks among the most successful public investments in Washington State history. There’s so much to tell you about this unique airport.


Over time, we’ll share with you a wide variety of articles, photos and videos that will take you through the airport’s history and milestones to today’s happenings and future events. To get us started, here are ten major facts you may not know about King County International Airport:

  • King County International Airport was built in 1928 to serve multiple functions: as a municipal airport, as a testing and delivery facility for the Boeing Company, and as a major air freight center for the region’s industries.
  • It’s also known as Boeing Field and covers 634 acres in the Duwamish Corridor.
  • It’s owned by King County and managed by the Airport Division of the King County Department of Transportation.
  • King County International Airport averages about 200,000 operations (takeoffs and landings) each year.


    King County International Airport Terminal Building, 2012. Photo: Ned Ahrens

  • In 2001, it was named by the National Air Transportation Association as one of the “100 Most Needed Airports” in the United States.
  • It is financed by airport tenants’ and customers’ fees, and receives no general tax revenues.
  • The airport’s economic impact is $3.5 billion in terms of local business sales that support more than 16,000 jobs and create $1.8 billion in labor income in the county. The airport’s 150 tenants also directly support more than 5,000 jobs in the local economy.
  • The airport serves small commercial passenger airlines, cargo carriers, private aircraft owners, helicopters, corporate jets, and military and other aircraft.
  • It’s home to the Boeing Company’s 737 aircraft flight-test program, along with other Boeing operations.
  • The Museum of Flight is located there, with a wide variety of aircraft and exhibits showcasing aviation history.

    Boeing Field Terminal 7185B

    King County International Airport Terminal Building. Photo: Boeing Archives

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