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How to get fromSeattle to Longmontby plane, bus, bus (Flixbus), train, car or bus (Greyhound, Flixbus)

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There are 7 ways to get from Seattle to Longmont by plane, bus, bus (Flixbus), train, car, or bus (Greyhound, Flixbus)

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

  1. Fly Seattle-Tacoma International Airport to Denver, bus

    best
    1. Fly from Seattle-Tacoma International Airport (SEA) to Denver (DEN)plane plane SEA - DEN
    2. Take the bus from Union Station Gate B16 to Coffman St & 4th Avebus bus
    7h 18m
    $129–619
  2. Bus

    1. Take the bus from Seattle Bus Station to Spokane Stationbus bus
    2. Take the bus from Spokane to Billingsbus bus
    3. Take the bus from Billings, MT to Casper Amtrak Stationbus bus
    4. Take the bus from Casper 144 East A St to Denver Union Stationbus bus
    5. Take the bus from Union Station Gate B16 to Coffman St & 4th Avebus bus Ld1 / ...
    32h 54m
    $285–550
  3. Train, bus

    1. Take the train from Seattle to Sacramentotrain train
    2. Take the train from Sacramento to Denvertrain train
    3. Take the bus from Union Station Gate B16 to S Main St & Delaware Avebus bus Ld1 / ...
    2d 6h
    $231–1,004
  4. Drive 1,250 mi

    1. Drive from Seattle to Longmontcar car 1,250 mi
    20h 23m
    $229–330
  5. Fly Seattle-Tacoma International Airport to Colorado Springs Airport, bus

    1. Fly from Seattle-Tacoma International Airport (SEA) to Colorado Springs Airport (COS)plane plane SEA - COS
    2. Take the bus from Colorado Springs to 8th & Coffman PnR Longmontbus bus
    11h 1m
    $135–480
  6. Train to Portland International Airport, fly to Denver, bus

    1. Take the train from Seattle to Portlandtrain train
    2. Fly from Portland International Airport (PDX) to Denver (DEN)plane plane PDX - DEN
    3. Take the bus from Union Station Gate B16 to Coffman St & 4th Avebus bus
    10h 37m
    $187–891
  7. Bus via Sacramento

    1. Take the bus from Seattle Bus Station to Sacramento Bus Stationbus bus
    2. Take the bus from Sacramento Bus Station to Sparks Transit Centerbus bus
    3. Take the bus from Sparks Transit Center to Denver Union Stationbus bus
    4. Take the bus from Union Station Gate B16 to Coffman St & 4th Avebus bus Ld1 / ...
    43h 21m
    $171–403

Seattle to Longmont by bus and foot

Calendar1Weekly Services
Duration32h 54mAverage Duration
Ticket$285Cheapest Price
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Questions & Answers

What companies run services between Seattle, WA, USA and Longmont, CO, USA?

You can take a bus from Seattle Bus Station to Coffman St & 4th Ave via Spokane, Billings, Billings, MT, Casper Amtrak Station, Casper 144 East A St, Denver Union Station, and Union Station Gate B16 in around 32h 54m.

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