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How to get fromBoulder to SeaTacby bus, plane, bus (Greyhound, Flixbus) or car

Find Transport to SeaTac

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There are 4 ways to get from Boulder to SeaTac by bus, plane, bus (Greyhound, Flixbus), or car

Select an option below to see step-by-step directions and to compare ticket prices and travel times in Rome2Rio's travel planner.

  1. Bus, fly

    best
    1. Take the bus from US 36 & Flatiron Station Gate A to Denver Airport Station Gate 6bus
    2. Fly from Denver (DEN) to Seattle-Tacoma International Airport (SEA)planeDEN - SEA
    5h 23m
    $106–556

  2. Bus

    1. Take the bus from Downtown Boulder Station Gate 1 to Union StationbusFf1 / ...
    2. Take the bus from Denver Union Station to Cheyennebus
    3. Take the bus from Cheyenne, WY to Billings, MTbus
    4. Take the bus from Billings to Spokanebus
    5. Take the bus from Spokane Station to Seattle Tacoma Intl Airportbus
    31h 46m
    $244–468

  3. Drive 1,267.5 mi

    1. Drive from Boulder to SeaTaccar1,267.5 mi
    20h 47m
    $232–335

  4. Bus via Sacramento

    1. Take the bus from Downtown Boulder Station Gate 1 to Union StationbusFf1 / ...
    2. Take the bus from Denver Union Station to Sparks Transit Centerbus
    3. Take the bus from Sparks Transit Center to Sacramento Bus Stationbus
    4. Take the bus from Sacramento Bus Station to Seattle Tacoma Intl Airportbus
    43h 30m
    $204–468

Boulder to SeaTac by bus

Calendar1Weekly Buses
Duration31h 46mAverage Duration
Ticket$244Cheapest Price
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Questions & Answers

What companies run services between Boulder, CO, USA and SeaTac, WA, USA?

You can take a bus from Downtown Boulder Station Gate 1 to Seattle Tacoma Intl Airport via Denver Union Station, Cheyenne, WY, Billings, MT, Billings, and Spokane Station in around 31h 46m.

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