Seattle, WA to Denver, CO flights

Flights starting at £73. Choose between Alaska Airlines, Frontier 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 Alaska Airlines, Frontier Airlines, Spirit Airlines, United Airlines, and American Airlines. Seattle and Denver have 237 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 Mon 27.11 - Sun 03.12

AirlineMon 27.11Tue 28.11Wed 29.11Thu 30.11Fri 01.12Sat 02.12Sun 03.12
---------------6---
---------------3---
1111111
---------------------

Weekly direct flights for Mon 04.12 - Sun 10.12

AirlineMon 04.12Tue 05.12Wed 06.12Thu 07.12Fri 08.12Sat 09.12Sun 10.12
------------------5
---------------14
1111111
------------------1

Weekly direct flights for Mon 11.12 - Sun 17.12

AirlineMon 11.12Tue 12.12Wed 13.12Thu 14.12Fri 15.12Sat 16.12Sun 17.12
6662314
4334545
1111111
---------------------

Weekly direct flights for Mon 18.12 - Sun 24.12

AirlineMon 18.12Tue 19.12Wed 20.12Thu 21.12Fri 22.12Sat 23.12Sun 24.12
4---66335
5555434
1111111
---------------------

Check-in for a flight from Seattle to Denver

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

Denver travel tips

1) Buy a Citypass in Denver to save some money
2) Sport fans must attend a baseball match in Denver
3) Do not hesitate to ask if ice skating is free in winter in Denver
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.

Frequently asked questions

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