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Cheap flights from Colorado Springs to Seattle from $136

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado Springs to Seattle departing on 8/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Colorado Springs to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:14 pm - 10:05 pm
COS
-
SEA
4h 51m
1 stop
Delta Logo
12:36 pm - 10:24 pm
SEA
-
COS
8h 48m
2 stops
$276Delta
Wed, Sep 23 - Tue, Sep 29
Southwest Logo
6:55 am - 12:05 pm
COS
-
SEA
6h 10m
1 stop
Southwest Logo
5:30 am - 12:10 pm
SEA
-
COS
5h 40m
1 stop
$287Southwest
Wed, Sep 16 - Sat, Sep 19
United Airlines Logo
6:00 am - 10:01 am
COS
-
SEA
5h 01m
1 stop
United Airlines Logo
8:30 am - 3:02 pm
SEA
-
COS
5h 32m
1 stop
$288United Airlines
Wed, Sep 23 - Tue, Sep 29
Delta Logo
6:14 pm - 10:05 pm
COS
-
SEA
4h 51m
1 stop
Delta Logo
12:36 pm - 10:54 pm
SEA
-
COS
9h 18m
2 stops
$292Delta
Sat, Sep 12 - Wed, Sep 23
United Airlines Logo
6:00 am - 10:01 am
COS
-
SEA
5h 01m
1 stop
United Airlines Logo
6:15 pm - 11:55 pm
SEA
-
COS
4h 40m
1 stop
$297United Airlines
Sat, Sep 12 - Wed, Sep 23
Delta Logo
8:16 am - 4:47 pm
COS
-
SEA
9h 31m
2 stops
Delta Logo
12:36 pm - 10:54 pm
SEA
-
COS
9h 18m
2 stops
$298Delta
Sat, Sep 12 - Wed, Sep 23
United Airlines Logo
8:38 am - 8:43 pm
COS
-
SEA
13h 05m
2 stops
United Airlines Logo
5:00 am - 10:44 am
SEA
-
COS
4h 44m
1 stop
$302United Airlines
Tue, Aug 25 - Wed, Aug 26
United Airlines Logo
11:30 am - 8:43 pm
COS
-
SEA
10h 13m
2 stops
United Airlines Logo
12:15 pm - 11:55 pm
SEA
-
COS
10h 40m
2 stops
$307United Airlines
Tue, Aug 25 - Wed, Aug 26
Delta Logo
6:16 pm - 11:59 pm
COS
-
SEA
6h 43m
1 stop
Delta Logo
7:16 am - 5:36 pm
SEA
-
COS
9h 20m
2 stops
$308Delta
Mon, Aug 10 - Tue, Aug 11
Southwest Logo
7:55 pm - 1:15 am
COS
-
SEA
6h 20m
1 stop
Southwest Logo
9:10 am - 4:30 pm
SEA
-
COS
6h 20m
1 stop
$314Southwest
Sat, Aug 1 - Fri, Aug 7

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Southwest flights from Colorado Springs to Seattle

Our best Southwest deals on Colorado Springs to Seattle flight tickets
Southwest
Sep 16
COS6:55 amColorado Springs
6h 10m
1 stop
SEA12:05 pmSeattle/Tacoma Intl
Sep 19
SEA5:30 amSeattle/Tacoma Intl
5h 40m
1 stop
COS12:10 pmColorado Springs
$287
Southwest
Aug 1
COS7:55 pmColorado Springs
6h 20m
1 stop
SEA1:15 amSeattle/Tacoma Intl
Aug 7
SEA9:10 amSeattle/Tacoma Intl
6h 20m
1 stop
COS4:30 pmColorado Springs
$314
Southwest
Jul 4
COS3:30 pmColorado Springs
8h 45m
1 stop
SEA11:15 pmSeattle/Tacoma Intl
Jul 10
SEA5:35 pmSeattle/Tacoma Intl
6h 45m
1 stop
COS1:20 amColorado Springs
$319

Delta flights from Colorado Springs to Seattle

Our best Delta deals on Colorado Springs to Seattle flight tickets
Delta
Sep 23
COS6:14 pmColorado Springs
4h 51m
1 stop
SEA10:05 pmSeattle/Tacoma Intl
Sep 29
SEA12:36 pmSeattle/Tacoma Intl
9h 18m
2 stops
COS10:54 pmColorado Springs
$276
Delta
Sep 12
COS6:14 pmColorado Springs
4h 51m
1 stop
SEA10:05 pmSeattle/Tacoma Intl
Sep 23
SEA12:36 pmSeattle/Tacoma Intl
9h 18m
2 stops
COS10:54 pmColorado Springs
$292
Delta
Sep 12
COS8:16 amColorado Springs
9h 31m
2 stops
SEA4:47 pmSeattle/Tacoma Intl
Sep 23
SEA12:36 pmSeattle/Tacoma Intl
9h 18m
2 stops
COS10:54 pmColorado Springs
$298

momondo Fare Finder

 
Customize your flight search to find flights from Colorado Springs to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 20, 2026.
Use the filters below to find and compare flights from Colorado Springs to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Wed 9/23

6:14 pm-10:05 pm

1 stop4h 51m

Seattle/Tacoma Intl

Tue 9/29

12:36 pm-10:24 pm

2 stops8h 48m

$276

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Wed 9/16

6:55 am-12:05 pm

1 stop6h 10m

Seattle/Tacoma Intl

Sat 9/19

5:30 am-12:10 pm

1 stop5h 40m

$287

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Wed 9/23

6:00 am-10:01 am

1 stop5h 01m

Seattle/Tacoma Intl

Tue 9/29

8:30 am-3:02 pm

1 stop5h 32m

$288

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Sat 9/12

6:14 pm-10:05 pm

1 stop4h 51m

Seattle/Tacoma Intl

Wed 9/23

12:36 pm-10:54 pm

2 stops9h 18m

$292
Quickest round-trip

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Sat 9/12

6:00 am-10:01 am

1 stop5h 01m

Seattle/Tacoma Intl

Wed 9/23

6:15 pm-11:55 pm

1 stop4h 40m

$297

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Sat 9/12

8:16 am-4:47 pm

2 stops9h 31m

Seattle/Tacoma Intl

Wed 9/23

12:36 pm-10:54 pm

2 stops9h 18m

$298

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Tue 8/25

8:38 am-8:43 pm

2 stops13h 05m

Seattle/Tacoma Intl

Wed 8/26

5:00 am-10:44 am

1 stop4h 44m

$302

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Tue 8/25

11:30 am-8:43 pm

2 stops10h 13m

Seattle/Tacoma Intl

Wed 8/26

12:15 pm-11:55 pm

2 stops10h 40m

$307

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Mon 8/10

6:16 pm-11:59 pm

1 stop6h 43m

Seattle/Tacoma Intl

Tue 8/11

7:16 am-5:36 pm

2 stops9h 20m

$308

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Sat 8/1

7:55 pm-1:15 am

1 stop6h 20m

Seattle/Tacoma Intl

Fri 8/7

9:10 am-4:30 pm

1 stop6h 20m

$314

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Colorado Springs to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Colorado Springs and Seattle?

What is the cheapest month to fly to Seattle?

In general, January is the cheapest month to fly from Colorado Springs to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $224. If you don’t want to visit Seattle in January, then you should wait until October to fly from Colorado Springs, when ticket prices are also cheap, with an average price of $283.

How far in advance should I book a flight from Colorado Springs to Seattle?

You are more likely to see cheaper flights to Seattle from Colorado Springs when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $374 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Colorado Springs for as low as $236 on momondo.

How have Colorado Springs to Seattle flight prices changed over time?

As of June 2026, prices for Colorado Springs to Seattle flights are approximately 21% cheaper when compared to flights at the same time last year.

When to book flights from Colorado Springs to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Colorado Springs to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Colorado Springs to Seattle (COS to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado Springs to Seattle

Fastest flight time

4h 44m

Direct flights

None
The fastest flight from Colorado Springs to Seattle takes 4h 44m
There are no direct flights from Colorado Springs to Seattle. There are no popular flight routes from Colorado Springs to Seattle.
Search flight deals

Frequently asked questions about flying from Colorado Springs to Seattle

  • How far is Colorado Springs to Seattle/Tacoma Intl by plane?

    Seattle/Tacoma Intl is 1065.8 mi away from Colorado Springs. Flights usually cover this in 4h 44m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Colorado Springs Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Colorado Springs Airport to Seattle/Tacoma Intl Airport refresh daily.

  • How many operators does momondo search for flights from Colorado Springs Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Colorado Springs Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Colorado Springs Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Colorado Springs to Seattle?

Best airlines flying from Colorado Springs to Seattle

Compare and see reviews for airlines that fly from Colorado Springs to Seattle with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $137Free CancellationRating
7.8
8,420 reviews
Search Delta flights
SouthwestPriceFrom $162Free CancellationRating
7.9
4,241 reviews
Search Southwest flights
United AirlinesPriceFrom $217Free CancellationRating
7.4
9,865 reviews
Search United Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Redmond
Kent
Lakewood
Puyallup
Tukwila
Federal Way
Fife
Cle Elum
Marysville
Centralia
Shoreline
Kirkland
Westport

Why use momondo?

Why should I use momondo to find a flight deal from Colorado Springs to Seattle?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Colorado Springs.

Can I find flights from Colorado Springs to Seattle with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seattle from Colorado Springs which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Colorado Springs to Seattle?

Once all potential Colorado Springs to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Colorado Springs to Seattle right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Colorado Springs to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.

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