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Cheap flights from Colorado Springs to Seattle from $109

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 3/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Colorado Springs to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
12:00 pm - 4:48 pm
COS
-
SEA
5h 48m
1 stop
Delta Logo
5:30 am - 11:15 am
SEA
-
COS
4h 45m
1 stop
$207Delta
Thu, Mar 5 - Sat, Mar 7
Delta Logo
7:55 am - 6:49 pm
COS
-
SEA
11h 54m
2 stops
Delta Logo
5:30 am - 11:15 am
SEA
-
COS
4h 45m
1 stop
$212Delta
Thu, Mar 5 - Sat, Mar 7
American Airlines Logo
4:49 pm - 11:07 pm
COS
-
SEA
7h 18m
1 stop
American Airlines Logo
5:30 am - 3:58 pm
SEA
-
COS
9h 28m
1 stop
$217American Airlines
Thu, Mar 5 - Mon, Mar 9
Delta Logo
12:00 pm - 6:29 pm
COS
-
SEA
7h 29m
1 stop
Delta Logo
11:45 am - 10:05 pm
SEA
-
COS
9h 20m
2 stops
$241Delta
Thu, Mar 5 - Mon, Mar 9
Delta Logo
7:55 am - 6:49 pm
COS
-
SEA
11h 54m
2 stops
Delta Logo
11:45 am - 10:05 pm
SEA
-
COS
9h 20m
2 stops
$246Delta
Thu, Mar 5 - Mon, Mar 9
Southwest Logo
8:55 pm - 1:40 am
COS
-
SEA
5h 45m
1 stop
Southwest Logo
2:50 pm - 10:05 pm
SEA
-
COS
6h 15m
1 stop
$256Southwest
Fri, Mar 13 - Sat, Mar 21
Southwest Logo
6:15 am - 12:15 pm
COS
-
SEA
7h 00m
1 stop
Southwest Logo
11:05 am - 7:25 pm
SEA
-
COS
7h 20m
1 stop
$257Southwest
Fri, Apr 10 - Mon, Apr 13
United Airlines Logo
3:40 pm - 11:30 pm
COS
-
SEA
8h 50m
2 stops
United Airlines Logo
5:00 am - 10:52 am
SEA
-
COS
4h 52m
1 stop
$272United Airlines
Sun, Feb 15 - Wed, Feb 25
Delta Logo
7:55 am - 6:49 pm
COS
-
SEA
11h 54m
2 stops
Delta Logo
11:17 am - 10:21 pm
SEA
-
COS
10h 04m
2 stops
$278Delta
Thu, Mar 5 - Sat, Mar 7
Southwest Logo
8:45 pm - 1:25 am
COS
-
SEA
5h 40m
1 stop
Southwest Logo
11:05 am - 7:25 pm
SEA
-
COS
7h 20m
1 stop
$281Southwest
Mon, Apr 6 - Thu, Apr 9

American Airlines flights from Colorado Springs to Seattle

Our best American Airlines deals on Colorado Springs to Seattle flight tickets
American Airlines
Mar 5
COS4:49 pmColorado Springs
7h 18m
1 stop
SEA11:07 pmSeattle/Tacoma Intl
Mar 9
SEA5:30 amSeattle/Tacoma Intl
9h 28m
1 stop
COS3:58 pmColorado Springs
$217
American Airlines
Jul 22
COS3:25 pmColorado Springs
9h 18m
1 stop
SEA11:43 pmSeattle/Tacoma Intl
Jul 29
SEA5:05 amSeattle/Tacoma Intl
8h 30m
1 stop
COS2:35 pmColorado Springs
$239
American Airlines
Apr 8
COS5:41 amColorado Springs
8h 34m
1 stop
SEA1:15 pmSeattle/Tacoma Intl
Apr 13
SEA11:55 pmSeattle/Tacoma Intl
8h 32m
1 stop
COS9:27 amColorado Springs
$283

Delta flights from Colorado Springs to Seattle

Our best Delta deals on Colorado Springs to Seattle flight tickets
Delta
Mar 3
COS7:55 amColorado Springs
7h 49m
1 stop
SEA2:44 pmSeattle/Tacoma Intl
Mar 10
SEA11:45 amSeattle/Tacoma Intl
9h 20m
2 stops
COS10:05 pmColorado Springs
$202
Delta
Mar 6
COS12:00 pmColorado Springs
7h 29m
1 stop
SEA6:29 pmSeattle/Tacoma Intl
Mar 10
SEA4:55 pmSeattle/Tacoma Intl
4h 10m
1 stop
COS10:05 pmColorado Springs
$207
Delta
Mar 6
COS12:00 pmColorado Springs
7h 29m
1 stop
SEA6:29 pmSeattle/Tacoma Intl
Mar 10
SEA11:45 amSeattle/Tacoma Intl
9h 20m
2 stops
COS10:05 pmColorado Springs
$212

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 February 3, 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

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Thu 3/5

12:00 pm-4:48 pm

1 stop5h 48m

Seattle/Tacoma Intl

Sat 3/7

5:30 am-11:15 am

1 stop4h 45m

$207

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Thu 3/5

7:55 am-6:49 pm

2 stops11h 54m

Seattle/Tacoma Intl

Sat 3/7

5:30 am-11:15 am

1 stop4h 45m

$212

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Thu 3/5

4:49 pm-11:07 pm

1 stop7h 18m

Seattle/Tacoma Intl

Mon 3/9

5:30 am-3:58 pm

1 stop9h 28m

$217

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Thu 3/5

12:00 pm-6:29 pm

1 stop7h 29m

Seattle/Tacoma Intl

Mon 3/9

11:45 am-10:05 pm

2 stops9h 20m

$241

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Thu 3/5

7:55 am-6:49 pm

2 stops11h 54m

Seattle/Tacoma Intl

Mon 3/9

11:45 am-10:05 pm

2 stops9h 20m

$246

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Fri 3/13

8:55 pm-1:40 am

1 stop5h 45m

Seattle/Tacoma Intl

Sat 3/21

2:50 pm-10:05 pm

1 stop6h 15m

$256

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Fri 4/10

6:15 am-12:15 pm

1 stop7h 00m

Seattle/Tacoma Intl

Mon 4/13

11:05 am-7:25 pm

1 stop7h 20m

$257

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Sun 2/15

3:40 pm-11:30 pm

2 stops8h 50m

Seattle/Tacoma Intl

Wed 2/25

5:00 am-10:52 am

1 stop4h 52m

$272

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Thu 3/5

7:55 am-6:49 pm

2 stops11h 54m

Seattle/Tacoma Intl

Sat 3/7

11:17 am-10:21 pm

2 stops10h 04m

$278

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

Mon 4/6

8:45 pm-1:25 am

1 stop5h 40m

Seattle/Tacoma Intl

Thu 4/9

11:05 am-7:25 pm

1 stop7h 20m

$281

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

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 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 $276.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Colorado Springs is on a Thursday. momondo users have found tickets for Thursday departures for as low as $288. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Colorado Springs because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $454.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Colorado Springs in the evening is the least expensive time of day to depart. momondo users have found prices as low as $274 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $376. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight 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 $350 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 $223 on momondo.

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

As of February 2026, prices for Colorado Springs to Seattle flights are approximately 24% 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

5h 04m

Direct flights

None
The fastest flight from Colorado Springs to Seattle takes 5h 04m
There are no direct flights from Colorado Springs to Seattle. There are no popular flight routes from Colorado Springs to Seattle.
Search flight deals

  • 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 5h 04m, 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 $136Free CancellationRating
7.9
8,138 reviews
Search Delta flights
American AirlinesPriceFrom $186Free CancellationRating
7.2
11,216 reviews
Search American Airlines flights
SouthwestPriceFrom $186Free CancellationRating
8.0
4,272 reviews
Search Southwest flights
United AirlinesPriceFrom $217Free CancellationRating
7.4
9,236 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
Kent
Marysville
Redmond
Puyallup
Cle Elum
Tukwila
Lakewood
Federal Way
Westport
Kirkland
Centralia
Fife
Tumwater

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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