The average bus between SeaTac and DuPont takes 2h 2m and the fastest bus takes 1h 45m. The bus service runs several times per day from SeaTac to DuPont. 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 every 4 hours between SeaTac and DuPont. The earliest departure is at 5:33 AM in the morning, and the last departure from SeaTac is at 6:33 PM which arrives into DuPont at 8:27 PM. All services require a transfer, and take on average 2h 2m. The schedules shown below are for the next available departures.

1h 45m • 1 change

2h 22m • 1 change

2h 2m • 1 change

2h 12m • 1 change

1h 45m • 1 change

2h 22m • 1 change

2h 2m • 1 change

2h 12m • 1 change

1h 45m • 1 change

2h 22m • 1 change

2h 2m • 1 change

2h 12m • 1 change

1h 45m • 1 change

2h 22m • 1 change

2h 2m • 1 change

2h 12m • 1 change

1h 45m • 1 change

2h 22m • 1 change

2h 2m • 1 change

2h 12m • 1 change
Want to know about travelling from SeaTac to DuPont? 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 SeaTac to DuPont. However, there are services departing from SeaTac station and arriving at DuPont station via SR 512 P&R - Zone H. The journey, including transfers, takes approximately 2h 2m.
SeaTac to DuPont bus services, operated by Sound Transit, depart from SeaTac Station.
SeaTac to DuPont bus services, operated by Sound Transit, arrive at Dupont Station - Bay 6.
The distance between SeaTac and DuPont is 46.8 km. The road distance is 65 km.
You can take a bus from SeaTac Station to Dupont Station - Bay 6 via SR 512 P&R - Zone I in around 2h 23m.