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Cheap flights from Colorado Springs to Seattle from $129

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 3/19. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
10:37 am - 5:51 pmCOS-SEA
8h 14m1 stop
American Airlines Logo
8:35 am - 5:41 pmSEA-COS
8h 06m1 stop
$158American Airlines
Find Deal
mar., dic. 16 - dom., ene. 18
Delta Logo
8:10 am - 2:59 pmCOS-SEA
7h 49m1 stop
Delta Logo
5:25 am - 11:17 amSEA-COS
4h 52m1 stop
$167Delta
Find Deal
mié., dic. 17 - dom., ene. 11
Delta Logo
8:10 am - 5:10 pmCOS-SEA
10h 00m2 stops
Delta Logo
5:25 am - 11:17 amSEA-COS
4h 52m1 stop
$172Delta
Find Deal
mar., dic. 16 - dom., ene. 18
Delta Logo
5:55 pm - 11:16 pmCOS-SEA
6h 21m1 stop
Delta Logo
4:55 pm - 10:30 pmSEA-COS
4h 35m1 stop
$213Delta
Find Deal
sáb., feb. 21 - mié., mar. 4
American Airlines Logo
12:45 pm - 7:00 pmCOS-SEA
7h 15m1 stop
American Airlines Logo
12:41 am - 9:53 amSEA-COS
8h 12m1 stop
$227American Airlines
Find Deal
lun., nov. 17 - mar., nov. 18
United Airlines Logo
5:59 am - 9:49 amCOS-SEA
4h 50m1 stop
United Airlines Logo
12:37 pm - 11:45 pmSEA-COS
10h 08m2 stops
$242United Airlines
Find Deal
sáb., feb. 21 - mié., mar. 4
United Airlines Logo
6:20 pm - 11:10 pmCOS-SEA
5h 50m1 stop
United Airlines Logo
5:00 am - 11:18 amSEA-COS
5h 18m1 stop
$248United Airlines
Find Deal
mar., nov. 25 - sáb., dic. 6
Delta Logo
6:02 pm - 12:11 amCOS-SEA
7h 09m1 stop
Delta Logo
12:45 pm - 10:25 pmSEA-COS
8h 40m2 stops
$254Delta
Find Deal
lun., nov. 24 - mar., dic. 2
Southwest Logo
5:25 am - 2:15 pmCOS-SEA
9h 50m1 stop
Southwest Logo
3:05 pm - 10:25 pmSEA-COS
6h 20m1 stop
$282Southwest
Find Deal
sáb., nov. 15 - mar., nov. 18
Southwest Logo
8:55 pm - 1:25 amCOS-SEA
5h 30m1 stop
Southwest Logo
3:05 pm - 10:25 pmSEA-COS
6h 20m1 stop
$348Southwest
Find Deal
mar., nov. 25 - mar., dic. 2

American Airlines flights from Colorado Springs to Seattle

Our best American Airlines deals on Colorado Springs to Seattle flight tickets
American Airlines
Dec 16
COS10:37 amColorado Springs
8h 14m
1 stop
SEA5:51 pmSeattle/Tacoma Intl
Jan 18
SEA8:35 amSeattle/Tacoma Intl
8h 06m
1 stop
COS5:41 pmColorado Springs
$158
Find similar
American Airlines
Nov 17
COS12:45 pmColorado Springs
7h 15m
1 stop
SEA7:00 pmSeattle/Tacoma Intl
Nov 18
SEA12:41 amSeattle/Tacoma Intl
8h 12m
1 stop
COS9:53 amColorado Springs
$227
Find similar
American Airlines
Nov 25
COS4:37 pmColorado Springs
9h 21m
1 stop
SEA12:58 amSeattle/Tacoma Intl
Dec 5
SEA12:31 amSeattle/Tacoma Intl
8h 16m
1 stop
COS9:47 amColorado Springs
$293
Find similar

Delta flights from Colorado Springs to Seattle

Our best Delta deals on Colorado Springs to Seattle flight tickets
Delta
Dec 17
COS8:10 amColorado Springs
7h 49m
1 stop
SEA2:59 pmSeattle/Tacoma Intl
Jan 11
SEA5:25 amSeattle/Tacoma Intl
4h 52m
1 stop
COS11:17 amColorado Springs
$167
Find similar
Delta
Dec 16
COS8:10 amColorado Springs
10h 00m
2 stops
SEA5:10 pmSeattle/Tacoma Intl
Jan 18
SEA5:25 amSeattle/Tacoma Intl
4h 52m
1 stop
COS11:17 amColorado Springs
$172
Find similar
Delta
Feb 21
COS5:55 pmColorado Springs
6h 21m
1 stop
SEA11:16 pmSeattle/Tacoma Intl
Mar 4
SEA4:55 pmSeattle/Tacoma Intl
4h 35m
1 stop
COS10:30 pmColorado Springs
$213
Find similar

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 octubre 30, 2025.
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

mar. 12/16

10:37 am-5:51 pm

1 stop8h 14m

Seattle/Tacoma Intl

dom. 1/18

8:35 am-5:41 pm

1 stop8h 06m

$158

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

mié. 12/17

8:10 am-2:59 pm

1 stop7h 49m

Seattle/Tacoma Intl

dom. 1/11

5:25 am-11:17 am

1 stop4h 52m

$167

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

mar. 12/16

8:10 am-5:10 pm

2 stops10h 00m

Seattle/Tacoma Intl

dom. 1/18

5:25 am-11:17 am

1 stop4h 52m

$172

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

sáb. 2/21

5:55 pm-11:16 pm

1 stop6h 21m

Seattle/Tacoma Intl

mié. 3/4

4:55 pm-10:30 pm

1 stop4h 35m

$213

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

lun. 11/17

12:45 pm-7:00 pm

1 stop7h 15m

Seattle/Tacoma Intl

mar. 11/18

12:41 am-9:53 am

1 stop8h 12m

$227

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

sáb. 2/21

5:59 am-9:49 am

1 stop4h 50m

Seattle/Tacoma Intl

mié. 3/4

12:37 pm-11:45 pm

2 stops10h 08m

$242

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

mar. 11/25

6:20 pm-11:10 pm

1 stop5h 50m

Seattle/Tacoma Intl

sáb. 12/6

5:00 am-11:18 am

1 stop5h 18m

$248

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

lun. 11/24

6:02 pm-12:11 am

1 stop7h 09m

Seattle/Tacoma Intl

mar. 12/2

12:45 pm-10:25 pm

2 stops8h 40m

$254

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

sáb. 11/15

5:25 am-2:15 pm

1 stop9h 50m

Seattle/Tacoma Intl

mar. 11/18

3:05 pm-10:25 pm

1 stop6h 20m

$282

Colorado SpringsSeattle

COS - SEA

COSSEA

Colorado Springs

mar. 11/25

8:55 pm-1:25 am

1 stop5h 30m

Seattle/Tacoma Intl

mar. 12/2

3:05 pm-10:25 pm

1 stop6h 20m

$348

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 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 $206. If you don’t want to visit Seattle in January, then you should wait until February to fly from Colorado Springs, when ticket prices are also cheap, with an average price of $314.

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 Friday. momondo users have found tickets for Friday departures for as low as $293. 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 $457.

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 $279 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $397. 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 $362 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 $292 on momondo.

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

As of October 2025, prices for Colorado Springs to Seattle flights are approximately 8% more expensive 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

Direct flights

None
There are no direct flights from Colorado Springs to Seattle. There are no popular flight routes from Colorado Springs to Seattle.
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  • 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 50m, 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 $156Free CancellationRating
7.9
7,998 reviews
Search Delta flights
American AirlinesPriceFrom $186Free CancellationRating
7.2
11,035 reviews
Search American Airlines flights
SouthwestPriceFrom $207Free CancellationRating
8.0
4,243 reviews
Search Southwest flights
United AirlinesPriceFrom $222Free CancellationRating
7.4
8,998 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
Puyallup
Marysville
Redmond
Tukwila
Federal Way
Lakewood
Cle Elum
Fife
Centralia
Kirkland
Shoreline
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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