Seattle Paine Field International Airport guide

Seattle Paine Field International Airport, also called Paine Field or Snohomish County Airport, lies in unincorporated Snohomish County between Mukilteo and Everett, about 25 miles north of Seattle. The field began as a Works Progress Administration project in 1936, was named for Topliff Olin Paine in 1941, and served the Army Air Corps and the Air Force before it returned to civilian control in 1968.

The airport has two active runways, 16R/34L and 16L/34R, and only 16R/34L is open after hours. A third runway, 11/29, was decommissioned in 2020. It recorded about 150,500 aircraft operations in 2024, a large share of them general aviation and Boeing flight-test traffic.

Boeing's Everett factory sits beside the field. The company chose the site in 1966 for the 747 program, and it remains a main assembly site for the 767 and 777. Scheduled passenger flights returned in March 2019 through a two-gate terminal that Propeller Airports financed, built and operates under a lease from the county. The terminal opened with Alaska Airlines and United, and the airport handled more than one million passengers in 2019. United left in 2021 and Frontier flew briefly in 2025 and 2026. Alaska Airlines, mostly through Horizon Air, now provides most of the service, with San Juan Airlines flying to Friday Harbor.