Sea–Tac Airport's Main Terminal is located at 17801 International Blvd. (State Route 99) in SeaTac, Washington.
If arriving from north of SeaTac, take Interstate 5 south to Exit 154B, and then drive west briefly on State Route 518.
The airport is the first exit, follow the signs as the roadway will take you directly to the Airport's main terminal for departures, arrivals, or parking.
Sea–Tac can also be reached from the north via State Route 509. From downtown Seattle, take State Route 99 south to the First Avenue Bridge, which becomes State Route 509.
Follow State Route 509 south until you reach the interchange with State Route 518 in Burien.
Turn left onto State Route 518 and take it for approximately one mile to the east, then follow the signs to Sea–Tac Airport.
From south of SeaTac, take Interstate 5 north to Exit 154, the Burien/SeaTac Exit. The exit takes you directly onto westbound State Route 518. Sea–Tac Airport is the first exit off State Route 518.
The airport can also be reached from the south by taking Exit 151 off Interstate–5 onto S. 188th St. Drive westbound on S. 188th Street to International Blvd., which is about two miles.
SeaTac Airport is on the right hand side. The airport can also be reached from the south or north via International Blvd (State Route 99).
If arriving from Bellevue or the eastside, take State Route 405 south to the Interstate–5 interchange.
Continue straight as State Route 405 south turns into State Route 518 west. Take the first exit off State Route 518 for the airport.
From the cities of Normandy Park or Burien to the west of the airport, the airport can be reached by taking either S. 188th Street eastbound to International Blvd. or by taking State Route 518 eastbound to the airport exit.
For a map of the SeaTac area, please see below.
View SeaTac, Washington in a larger map.