Cheap flights from Colorado Springs to Northwest Washington

View AU$119 flight on Sat, 15 Nov. 2025Opens in a new window

Popular airlines from Colorado Springs to Northwest Washington

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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Cheap Flights from Colorado Springs (DEN) to Northwest Washington (SEA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Fri, 22 Aug. - Tue, 26 Aug.
DEN
Denver
SEA
Seattle
AU$256 Return, found 6 days ago
AU$256
Return
found 6 days ago
Select Alaska Airlines flight, departing Fri, 22 Aug. from Denver to Seattle, returning Tue, 26 Aug., priced at AU$256 found 6 days ago
Delta
Fri, 22 Aug. - Tue, 26 Aug.
DEN
Denver
SEA
Seattle
AU$257 Return, found 6 days ago
AU$257
Return
found 6 days ago
Select Delta flight, departing Fri, 22 Aug. from Denver to Seattle, returning Tue, 26 Aug., priced at AU$257 found 6 days ago
Delta
Fri, 17 Oct. - Fri, 31 Oct.
DEN
Denver
SEA
Seattle
AU$263 Return, found 1 day ago
AU$263
Return
found 1 day ago
Select Delta flight, departing Fri, 17 Oct. from Denver to Seattle, returning Fri, 31 Oct., priced at AU$263 found 1 day ago
United
Fri, 22 Aug. - Tue, 26 Aug.
DEN
Denver
SEA
Seattle
AU$318 Return, found 6 days ago
AU$318
Return
found 6 days ago
Select United flight, departing Fri, 22 Aug. from Denver to Seattle, returning Tue, 26 Aug., priced at AU$318 found 6 days ago
Hawaiian Airlines
Mon, 11 Aug. - Wed, 13 Aug.
DEN
Denver
SEA
Seattle
AU$405 Return, found 21 hours ago
AU$405
Return
found 21 hours ago
Select Hawaiian Airlines flight, departing Mon, 11 Aug. from Denver to Seattle, returning Wed, 13 Aug., priced at AU$405 found 21 hours ago
American Airlines
Sat, 15 Nov. - Sun, 23 Nov.
DEN
Denver
SEA
Seattle
AU$472 Return, found 8 hours ago
AU$472
Return
found 8 hours ago
Select American Airlines flight, departing Sat, 15 Nov. from Denver to Seattle, returning Sun, 23 Nov., priced at AU$472 found 8 hours ago

Find the cheapest month to fly from Denver (DEN) to Bellingham (BLI)

May is typically the cheapest month to fly

From AU$350 - AU$764 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.