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Portland Union Station to SeaTac buses

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Trip Overview

The average bus between Portland Union Station and SeaTac takes 3h 9m and the fastest bus takes 3h 5m. The bus service runs several times per day from Portland Union 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.

3h 9m
Duration
162 mi
Distance
$35
Average price
3 times a day
Frequency

Portland Union Station to SeaTac bus times

Buses run 3 times a day between Portland Union Station and SeaTac. The earliest departure is at 6:20 AM in the morning, and the last departure from Portland Union Station is at 3:30 PM which arrives into SeaTac at 6:35 PM. All services run direct with no transfers required, and take on average 3h 9m. The schedules shown below are for the next available departures.

Departing Sunday, November 8, 2026

  •  → 

    bus bus 3h 5m • Direct

Departing Monday, November 9, 2026

  •  → 

    bus bus 3h 10m • Direct
  •  → 

    bus bus 3h 5m • Direct

Departing Tuesday, November 10, 2026

  •  → 

    bus bus 3h 10m • Direct
  •  → 

    bus bus 3h 5m • Direct

Departing Wednesday, November 11, 2026

  •  → 

    bus bus 3h 10m • Direct
  •  → 

    bus bus 3h 5m • Direct

Departing Thursday, November 12, 2026

  •  → 

    bus bus 3h 15m • Direct
  •  → 

    bus bus 3h 10m • Direct
  •  → 

    bus bus 3h 5m • Direct

Departing Friday, November 13, 2026

  •  → 

    bus bus 3h 15m • Direct
  •  → 

    bus bus 3h 10m • Direct
  •  → 

    bus bus 3h 5m • Direct

Departing Saturday, November 14, 2026

  •  → 

    bus bus 3h 15m • Direct
  •  → 

    bus bus 3h 10m • Direct
  •  → 

    bus bus 3h 5m • Direct

Frequently asked questions

Want to know about travelling from Portland Union 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.

Map of how to get from Portland Union Station to SeaTac.ExpandLaunch map view
  • Distance: 162.4 mi
  • Duration: 3h 9m

What companies run services between Portland Union Station, OR, USA and SeaTac, WA, USA?

Greyhound USA operates a bus from Portland Curbside Bus Stop to Seattle Tacoma Intl Airport once daily. Tickets cost $29–45 and the journey takes 3h 5m. Flixbus USA also services this route 4 times a week.

Operators