There are several different ways to drive to Seattle-Tacoma International Airport. The airport’s main terminal is located at 17801 International Blvd. (State Route 99) in Sea-Tac, Washington. If arriving from Seattle, north of Sea-Tac, the most popular way to get to the airport is to take Interstate 5 south for about ten miles to Exit 154B, and then drive west briefly on State Route (”SR”) 518.

Sea-Tac Airport can also be reached from the north via SR 509. From downtown Seattle, take SR 99 to the First Avenue Bridge, which becomes SR 509. Follow SR 509 until you reach the interchange with SR 518 in Burien. Turn left onto SR 518 and take it for approximately one mile to the east, then follow the signs to Sea-Tac Airport. This can be a good alternative route from downtown Seattle as traffic can be heavy on Interstate 5.

To get to the airport from the south of SeaTac, take Interstate 5 north to Exit 154, the Burien/SeaTac Exit. The exit takes you directly onto SR 518 westbound. Sea-Tac Airport is the first exit off SR518. The airport can also be reached from the south by taking Exit 151 off Interstate 5 onto S. 188th Street. Drive westbound on S. 188th Street to International Blvd. for about two miles. Sea-Tac Airport is on your right hand side. The airport can also be reached from the south or north via International Blvd. (SR 99), but it is a busy roadway with many traffic lights. Sea-Tac airport is about twenty miles north of Tacoma.

If arriving to the airport from Bellevue or the eastside, take SR 405 south to the Interstate 5 interchange. Continue straight as SR 405 south turns into SR 518 west. Take the first exit off SR 518 for the airport. The airport is located about fifteen miles southwest of Bellevue. From the cities of Normandy Park or Burien to the west of the airport, the most can be conveniently reached by taking either S. 188th Street eastbound to International Blvd. or by taking SR 518 eastbound to the airport exit.