SeaTac to Sumner Station buses

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Trip Overview

The average bus between SeaTac and Sumner Station takes 1h 35m and the fastest bus takes 1h 15m. There is an hourly bus service from SeaTac to Sumner Station. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.

1h 35m
Duration: 23 mi
Distance: $6
Average price: Hourly
Frequency

Bus, line 578 bus

best

Take the bus from International Blvd & S 176th St - Bay 1 to Federal Way Downtown Station - Bay 11bus A Line
Take the bus from Federal Way Downtown Station - Bay 7 to Sumner Station - Bay 2bus 578

1h 27m

SeaTac to Sumner Station bus times

Buses run hourly between SeaTac and Sumner Station. The earliest departure is at 4:33 AM at night, and the last departure from SeaTac is at 10:33 PM which arrives into Sumner Station at 12:00 AM. All services require a transfer, and take on average 1h 35m. The schedules shown below are for the next available departures.

Departing Saturday, August 8, 2026

12:33 PM → 2:02 PM
1h 29m • 1 change
1:33 PM → 3:02 PM
1h 29m • 1 change
2:33 PM → 4:02 PM
1h 29m • 1 change
3:33 PM → 5:02 PM
1h 29m • 1 change
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Departing Sunday, August 9, 2026

7:33 AM → 9:00 AM
1h 27m • 1 change
8:33 AM → 10:00 AM
1h 27m • 1 change
9:33 AM → 11:00 AM
1h 27m • 1 change
10:33 AM → 12:02 PM
1h 29m • 1 change
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Departing Monday, August 10, 2026

4:33 AM → 6:05 AM
1h 32m • 1 change
5:33 AM → 7:06 AM
1h 33m • 1 change
6:33 AM → 8:11 AM
1h 38m • 1 change
7:03 AM → 8:42 AM
1h 39m • 1 change
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Frequently asked questions

Want to know about travelling from SeaTac to Sumner Station? 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.