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How to get fromCologne to Boulderby plane, bus or train

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There are 8 ways to get from Cologne to Boulder by plane, bus, or train

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 Cologne Bonn Airport to Denver, bus

    best
    1. Fly from Cologne Bonn Airport (CGN) to Denver (DEN)planeCGN - DEN
    2. Take the bus from Denver Airport Station Gate 8 to Downtown Boulder Stationbus
    17h 16m
    $398–1,514

  2. Train to Düsseldorf International Airport, fly to Denver, bus

    1. Take the train from Koeln Hbf to Duesseldorf Flughafentrain
    2. Fly from Düsseldorf International Airport (DUS) to Denver (DEN)planeDUS - DEN
    3. Take the bus from Denver Airport Station Gate 8 to Downtown Boulder Stationbus
    16h 49m
    $408–974

  3. Train to Frankfurt, fly to Denver, bus

    1. Take the train from Köln Messe/Deutz Bf to Frankfurttrain
    2. Fly from Frankfurt (FRA) to Denver (DEN)planeFRA - DEN
    3. Take the bus from Denver Airport Station Gate 8 to Downtown Boulder Stationbus
    15h 3m
    $514–1,303

  4. Train, train to Amsterdam Airport Schiphol, fly to Denver, bus

    1. Take the train from Köln Hbf to Arnhem Centraaltrain
    2. Take the train from Arnhem Centraal to Schiphol Airporttrain
    3. Fly from Amsterdam Airport Schiphol (AMS) to Denver (DEN)planeAMS - DEN
    4. Take the bus from Denver Airport Station Gate 8 to Downtown Boulder Stationbus
    19h 33m
    $407–2,627

  5. Train to Brussels Airport, fly to Denver, bus

    1. Take the train from Koeln Hbf to Brussels-Nordtrain
    2. Fly from Brussels Airport (BRU) to Denver (DEN)planeBRU - DEN
    3. Take the bus from Denver Airport Station Gate 8 to Downtown Boulder Stationbus
    18h 16m
    $399–1,421

  6. Train, train to Luxembourg, fly to Denver, bus

    1. Take the train from Koeln Sued to Koblenz Hbftrain
    2. Take the train from Koblenz Hbf to Luxembourgtrain
    3. Fly from Luxembourg (LUX) to Denver (DEN)planeLUX - DEN
    4. Take the bus from Denver Airport Station Gate 8 to Downtown Boulder Stationbus
    20h 56m
    $476–1,706

  7. Train to Frankfurt, fly to Colorado Springs Airport, bus

    1. Take the train from Köln Messe/Deutz Bf to Frankfurttrain
    2. Fly from Frankfurt (FRA) to Colorado Springs Airport (COS)planeFRA - COS
    3. Take the bus from Colorado Springs Airport to Denver International Airportbus
    4. Take the bus from Denver Airport Station Gate 8 to Downtown Boulder Stationbus
    20h 46m
    $774–2,863

  8. Train, train to Paris Charles De Gaulle Airport, fly to Denver, bus

    1. Take the train from Koeln Hbf to Brussel-Zuid / Bruxelles-Miditrain
    2. Take the train from Brussel-Zuid / Bruxelles-Midi to Aeroport Cdg2 Tgv Roissytrain
    3. Fly from Paris Charles De Gaulle Airport (CDG) to Denver (DEN)planeCDG - DEN
    4. Take the bus from Denver Airport Station Gate 8 to Downtown Boulder Stationbus
    18h 19m
    $507–1,685

Cologne Bonn Airport (CGN) to Denver (DEN) flights

Calendar20Weekly Planes
Duration14h 38mAverage Duration
Ticket$388Cheapest Price
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Questions & Answers

What companies run services between Cologne, Germany and Boulder, CO, USA?

There is no direct connection from Cologne to Boulder. However, you can take the train to Flughafen Köln/Bonn Bf, walk to Cologne Bonn Airport (CGN) airport, fly to Denver (DEN), walk to Denver Airport Station Gate 8, then take the bus to Downtown Boulder Station. Alternatively, you can take the train to Duesseldorf Flughafen, walk to D-Flughafen Bf, take the vehicle to D-Flughafen Terminal A/B, walk to Düsseldorf International Airport (DUS) airport, fly to Denver (DEN), walk to Denver Airport Station Gate 8, then take the bus to Downtown Boulder Station.

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