Seattle, WA to Denver, CO flights

Flights starting at $43. Choose between Frontier Airlines, Alaska Airlines, or Spirit Airlines to find the best price.

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Tips to know when travelling to Denver

Travelers usually depart from Seattle–Tacoma International, Kenmore Air Harbor Seaplane Base, Seattle, WA - University of Washington, Seattle, WA - Poly Clinic, or Seattle, WA - Harborview Med when they travel from Seattle to Denver. Book your trip to arrive at Denver International, or Denver Union Station. The distance between Seattle and Denver is 1646 km. The most popular airlines for this route are Frontier Airlines, Alaska Airlines, Spirit Airlines, United Airlines, and American Airlines. Seattle and Denver have 234 direct flights per week.

Weekly direct flights

Discover the top airlines offering direct flights from Seattle to Denver in the next month. You’ll find the number of daily direct flights per airline in the table.

Weekly direct flights for Sun 19.11 - Sat 25.11

AirlineSun 19.11Mon 20.11Tue 21.11Wed 22.11Thu 23.11Fri 24.11Sat 25.11
------------------3
---------------------
------------111
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Weekly direct flights for Sun 26.11 - Sat 02.12

AirlineSun 26.11Mon 27.11Tue 28.11Wed 29.11Thu 30.11Fri 01.12Sat 02.12
------------------6
------------------3
1111111
---------------------

Weekly direct flights for Sun 03.12 - Sat 09.12

AirlineSun 03.12Mon 04.12Tue 05.12Wed 06.12Thu 07.12Fri 08.12Sat 09.12
5665455
4423443
1111111
---------------------

Weekly direct flights for Sun 10.12 - Sat 16.12

AirlineSun 10.12Mon 11.12Tue 12.12Wed 13.12Thu 14.12Fri 15.12Sat 16.12
5555451
4433554
1111111
---------------------

Check-in for a flight from Seattle to Denver

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
Alaska AirlinesASAASNoOpens 24 days before flight
Closes 1 hours before flight
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
United AirlinesUALUAYesNo
American AirlinesAALAANoNo
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Frequently asked questions

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