RM1,142 Cheap Flights from Colorado Springs (COS) to Seattle (SEA)

View RM1,142 flight on Sun, 31 May 2026Opens in a new window

Popular airlines from Colorado Springs Airport (COS) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Colorado Springs to Seattle (COS-SEA)

Prices were available within the past 7 days and start at RM1,142 for one-way flights and RM2,462 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, 31 May - Sun, 7 Jun
COS
Colorado Springs
SEA
Seattle
RM2,462 Return, found 2 days ago
RM2,462
Return
found 2 days ago
Select Delta flight, departing Sun, 31 May from Colorado Springs to Seattle, returning Sun, 7 Jun, priced at RM2,462 found 2 days ago
Delta
Sun, 31 May - Sun, 7 Jun
COS
Colorado Springs
SEA
Seattle
RM2,530 Return, found 2 days ago
RM2,530
Return
found 2 days ago
Select Delta flight, departing Sun, 31 May from Colorado Springs to Seattle, returning Sun, 7 Jun, priced at RM2,530 found 2 days ago
United
Sun, 31 May - Sun, 7 Jun
COS
Colorado Springs
SEA
Seattle
RM2,640 Return, found 2 days ago
RM2,640
Return
found 2 days ago
Select United flight, departing Sun, 31 May from Colorado Springs to Seattle, returning Sun, 7 Jun, priced at RM2,640 found 2 days ago
United
Sun, 31 May - Sun, 7 Jun
COS
Colorado Springs
SEA
Seattle
RM2,641 Return, found 2 days ago
RM2,641
Return
found 2 days ago
Select United flight, departing Sun, 31 May from Colorado Springs to Seattle, returning Sun, 7 Jun, priced at RM2,641 found 2 days ago
United
Sun, 31 May - Sun, 7 Jun
COS
Colorado Springs
SEA
Seattle
RM2,708 Return, found 2 days ago
RM2,708
Return
found 2 days ago
Select United flight, departing Sun, 31 May from Colorado Springs to Seattle, returning Sun, 7 Jun, priced at RM2,708 found 2 days ago
Delta
Sun, 31 May - Sun, 7 Jun
COS
Colorado Springs
SEA
Seattle
RM2,748 Return, found 2 days ago
RM2,748
Return
found 2 days ago
Select Delta flight, departing Sun, 31 May from Colorado Springs to Seattle, returning Sun, 7 Jun, priced at RM2,748 found 2 days ago
United
Sun, 31 May - Sun, 7 Jun
COS
Colorado Springs
SEA
Seattle
RM2,776 Return, found 2 days ago
RM2,776
Return
found 2 days ago
Select United flight, departing Sun, 31 May from Colorado Springs to Seattle, returning Sun, 7 Jun, priced at RM2,776 found 2 days ago
Delta
Sun, 31 May - Sun, 7 Jun
COS
Colorado Springs
SEA
Seattle
RM2,816 Return, found 2 days ago
RM2,816
Return
found 2 days ago
Select Delta flight, departing Sun, 31 May from Colorado Springs to Seattle, returning Sun, 7 Jun, priced at RM2,816 found 2 days ago
United
Sun, 31 May - Sun, 7 Jun
COS
Colorado Springs
SEA
Seattle
RM2,819 Return, found 2 days ago
RM2,819
Return
found 2 days ago
Select United flight, departing Sun, 31 May from Colorado Springs to Seattle, returning Sun, 7 Jun, priced at RM2,819 found 2 days ago
American Airlines
Sun, 31 May - Sun, 7 Jun
COS
Colorado Springs
SEA
Seattle
RM3,283 Return, found 2 days ago
RM3,283
Return
found 2 days ago
Select American Airlines flight, departing Sun, 31 May from Colorado Springs to Seattle, returning Sun, 7 Jun, priced at RM3,283 found 2 days ago

Frequently asked questions

How much is a flight from Colorado Springs Airport (COS) to Sea-Tac Airport?
Based on fares offered within the last 7 days on Expedia for flights departing within the next year, round-trip flights between COS and SEA start from RM2,462. Book now to secure the best price for your journey. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from City of Colorado Springs Municipal Airport to Seattle - Tacoma Intl. Airport (SEA)?
Each air carrier has its own terms and conditions. If you do decide to cancel, follow the easy instructions on our Customer Service Portal.
How do I find cheap flights from COS to SEA that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for COS to SEA flights, you'll see a "no change fees" filter for you to select.
How far is the flight from COS to Seattle - Tacoma Intl. Airport (SEA)?
It's around 1,700 kilometres from City of Colorado Springs Municipal Airport to SEA, so expect to be in your seat for a while. Keep yourself entertained by packing things like a magazine or a thrilling novel.
Which airlines fly direct from City of Colorado Springs Municipal Airport to Sea-Tac Airport?
Currently, no airlines offer flights directly from City of Colorado Springs Municipal Airport to SEA. You'll have to book a flight with at least one stop. To get the best connections and price, lock in your airfare well ahead of time.
Are Colorado Springs Airport (COS) to Seattle - Tacoma Intl. Airport (SEA) flight tickets cheaper when they're purchased at the last minute?
Last-minute planners can occasionally find a bargain, with some of the cheapest airfares from Colorado Springs Airport (COS) to SEA surfacing a few weeks before the date of departure. If you'd rather book ahead, Expedia compares and updates all the best flight deals frequently — as early as a year in advance in some cases. It does depend on the carrier though, as not all airlines quote prices that far in advance.

Travel information

Origin airport
Colorado Springs
Destination airport
Seattle - Tacoma Intl.
Return price
RM2,462
Distance
1705 km

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Perfect flights from Colorado Springs to Seattle

Your Journey from Colorado Springs to Seattle

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from Colorado Springs to Seattle

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