Sound Transit’s Link Light Rail extends from the city of SeaTac to the University of Washington. With stops in South Seattle neighborhoods, the stadium district, the International District/Chinatown and downtown locations, it’s a great option for travelers coming to or from the airport.
The Link Light Rail service runs from 5 a.m. to 1 a.m. Monday through Saturday and 6 a.m. to midnight on Sundays. Trains arrive and depart every 6 to 15 minutes, depending on the time of day.
https://www.soundtransit.org/Schedules/Link-light-rail
Directions to Link light rail
The SeaTac / Airport Station is connected to the fourth floor of the airport parking garage. Trains arrive and depart on the platform level of the station. The covered, level walkway to the airport terminal is one level down on the mezzanine. The well-lit walkway is separated from the main area of the garage and directional signs point the way to the main terminal skybridge. Wheelchair service is available.
Watch this short video for directions to the Link Light Rail station from within the terminal at Sea-Tac International Airport:
