The average bus between Sumner Station and SeaTac takes 1h 18m and the fastest bus takes 1h 10m. There is an hourly bus service from Sumner Station to SeaTac. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run hourly between Sumner Station and SeaTac. The earliest departure is at 6:12 AM in the morning, and the last departure from Sumner Station is at 9:18 PM which arrives into SeaTac at 10:51 PM. All services require a transfer, and take on average 1h 18m. The schedules shown below are for the next available departures.

1h 14m • 1 change

1h 13m • 1 change

1h 13m • 1 change

1h 10m • 1 change

1h 19m • 1 change

1h 12m • 1 change

1h 19m • 1 change

1h 29m • 1 change

1h 22m • 1 change

1h 22m • 1 change

1h 24m • 1 change

1h 25m • 1 change
Want to know about travelling from Sumner Station to SeaTac? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Sumner Station to SeaTac. However, there are services departing from Sumner Station station and arriving at SeaTac station via Federal Way Downtown Station - Bay 3 station. The journey, including transfers, takes approximately 1h 18m.
Sumner Station to SeaTac bus services, operated by Sound Transit, depart from Sumner Station - Bay 1.
Sumner Station to SeaTac bus services, operated by Sound Transit, arrive at International Blvd & S 176th St - Bay 2 station.
The distance between Sumner Station and SeaTac is 27.7 km. The road distance is 38 km.
You can take a bus from Sumner Station - Bay 1 to International Blvd & S 176th St - Bay 2 via Federal Way Downtown Station - Bay 8 in around 1h 12m.