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

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There are 5 ways to get from Boulder to SeaTac by bus, plane, bus (Greyhound, Flixbus), train, 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 bus
    2. Fly from Denver (DEN) to Seattle-Tacoma International Airport (SEA)plane plane DEN - SEA
    5h 25m
    $96–476

  2. Bus

    1. Take the bus from Downtown Boulder Station Gate 1 to Union Stationbus bus Ff1 / ...
    2. Take the bus from Denver Union Station to Cheyennebus bus
    3. Take the bus from Cheyenne, WY to Billings, MTbus bus
    4. Take the bus from Billings to Spokanebus bus
    5. Take the bus from Spokane Station to Seattle Tacoma Intl Airportbus bus
    31h 46m
    $273–503

  3. Bus, train

    1. Take the bus from Broadway & 20th St to Union Station Gate B17bus bus Ff1 / ...
    2. Take the train from Denver to Sacramentotrain train
    3. Take the train from Sacramento to Tacomatrain train
    2d 5h
    $596–1,296

  4. Drive 1,267.5 mi

    1. Drive from Boulder to SeaTaccar car 1,267.5 mi
    20h 55m
    $232–335

  5. Bus via Sacramento

    1. Take the bus from Downtown Boulder Station Gate 1 to Union Stationbus bus Ff1 / ...
    2. Take the bus from Denver Union Station to Sparks Transit Centerbus bus
    3. Take the bus from Sparks Transit Center to Sacramento Bus Stationbus bus
    4. Take the bus from Sacramento Bus Station to Seattle Tacoma Intl Airportbus bus
    43h 20m
    $302–568

Boulder to SeaTac by bus

Calendar1Weekly Buses
Duration31h 46mAverage Duration
Ticket$273Cheapest 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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