COS - SEA

$76 Find Cheap Flights from Colorado Springs to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Colorado Springs to Seattle departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Colorado Springs to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Colorado Springs to Seattle, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$137
Overall average: $364
Delta
Tue 4/14Tue 4/21
COS - SEA • 1 stop
Cheapest one-way
$76
Typical prices: $148-$308
Southwest
Wed 5/13
COS - SEA • 1 stop
Top airlines
Cheapest • from $137 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Colorado Springs and Seattle. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $323 (round-trip)
Shortest trip • 5h 27m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 20% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 37% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Colorado Springs to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Colorado Springs to Seattle

Tue, Apr 14 - Tue, Apr 21
Delta Logo
11:55 am - 4:48 pm
COS
-
SEA
5h 53m
1 stop
Delta Logo
5:35 am - 11:12 am
SEA
-
COS
4h 37m
1 stop
$137Delta
Thu, May 14 - Sun, May 17
Southwest Logo
7:20 pm - 12:55 am
COS
-
SEA
6h 35m
1 stop
Southwest Logo
4:45 pm - 10:00 pm
SEA
-
COS
4h 15m
1 stop
$151Southwest
Fri, May 1 - Sun, May 10
Southwest Logo
7:20 pm - 12:55 am
COS
-
SEA
6h 35m
1 stop
Southwest Logo
5:00 am - 1:45 pm
SEA
-
COS
7h 45m
2 stops
$156Southwest
Sun, Apr 5 - Wed, Apr 8
Delta Logo
8:15 am - 2:54 pm
COS
-
SEA
7h 39m
1 stop
Delta Logo
5:30 am - 11:24 am
SEA
-
COS
4h 54m
1 stop
$157Delta
Wed, Apr 8 - Tue, Apr 14
American Airlines Logo
1:39 pm - 10:47 pm
COS
-
SEA
10h 08m
1 stop
American Airlines Logo
6:00 am - 4:23 pm
SEA
-
COS
9h 23m
1 stop
$159American Airlines
Fri, May 1 - Sun, May 10
Southwest Logo
5:20 pm - 12:55 am
COS
-
SEA
8h 35m
2 stops
Southwest Logo
5:00 am - 1:45 pm
SEA
-
COS
7h 45m
2 stops
$161Southwest
Thu, May 7 - Mon, May 11
Southwest Logo
5:20 pm - 12:55 am
COS
-
SEA
8h 35m
2 stops
Southwest Logo
5:35 pm - 11:50 pm
SEA
-
COS
5h 15m
1 stop
$162Southwest
Wed, Apr 29 - Sat, May 9
Delta Logo
11:55 am - 6:30 pm
COS
-
SEA
7h 35m
1 stop
Delta Logo
5:30 am - 11:15 am
SEA
-
COS
4h 45m
1 stop
$167Delta
Wed, Apr 15 - Sun, Apr 19
Delta Logo
7:59 am - 12:25 pm
COS
-
SEA
5h 26m
1 stop
Delta Logo
5:35 am - 11:12 am
SEA
-
COS
4h 37m
1 stop
$188Delta
Tue, Apr 14 - Tue, Apr 21
Delta Logo
11:55 am - 4:48 pm
COS
-
SEA
5h 53m
1 stop
Delta Logo
5:35 am - 11:12 am
SEA
-
COS
4h 37m
1 stop
$197Delta
Booking Insights

KAYAK's insights & trends for Colorado Springs to Seattle flights

Get data-powered insights and trends into flights from Colorado Springs to Seattle to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Colorado Springs to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Colorado Springs to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Colorado Springs to Seattle is January, where tickets cost $224 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $476 and $475 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Colorado Springs to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Colorado Springs to Seattle, you should book around 3 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$76
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly with an average 6% increase in price.
Flight from Colorado Springs to Seattle

When to book flights from Colorado Springs to Seattle

Are your dates flexible? Find out the best times to travel from Colorado Springs to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Colorado Springs to Seattle

  • What is the cheapest flight from Colorado Springs to Seattle?

    In the last 3 days, the lowest price for a flight from Colorado Springs to Seattle was $76 for a one-way ticket and $137 for a round-trip.

  • Do I need a passport to fly between Colorado Springs and Seattle?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Colorado Springs to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Colorado Springs to Seattle?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Colorado Springs and Seattle, with oneworld being the most commonly used for this route.

  • What is the most popular layover when flying to Seattle from Colorado Springs?

    Denver is the most popular layover city among KAYAK users traveling from Colorado Springs to Seattle.

  • Which is the best airline for flights from Colorado Springs to Seattle, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Colorado Springs to Seattle are Southwest and Delta. With an average price for the route of $381 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $310 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Colorado Springs to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Colorado Springs to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Colorado Springs to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Colorado Springs is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Colorado Springs to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Colorado Springs with another airline. Booking your flights between Colorado Springs and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Colorado Springs to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Colorado Springs up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Colorado Springs to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Colorado Springs to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Colorado Springs to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4319 reviews
8.1Boarding
8.6Crew
7.0Food
8.0Comfort
7.5Entertainment
Airline reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

4.0 OkayKenny, Mar 2026
TPA - BWI
Read more Southwest reviews

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

WiFi was not working and didn’t have a beverage service

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight boarded late after announcing on time boarding. Flight arrived only a little late despite late departure. Had trouble connecting to WiFi

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

Terrible. Four hour delay because Delta could not find crew to man the aircraft. Terrible communication. Terrible insight into the delays. One of the worst flight experiences I’ve had.

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

Staff was great! Kind and cordial! Middle seat row 28 seat B has a hump in it. Trays were getting stuck when putting down and up. Good flight

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Both of my flights arrived early and check in process was smooth

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Flight was late - I was downgraded from first class to coach

Crew seemed a bit cranky. No seatback screens. But boarding was efficient and on time and we arrived early.

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

Terrible. They wouldn't allow me on my flight on the 14th..

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Poor communication ahead of time about flight delays and old planes/other equipment.

The flight was delayed multiple times. I was autobooted and placed in the center seat in the last row of the plane.

My flight was delayed. We left at midnight. I got to Greensboro (GSO) at 1am. All of AA's flights in/out of Charlotte always seem to be delayed or canceled. It took me all day on Sunday to get to my destination of Cincinnati from Greensboro. I had to be rerouted through Chicago because my original flight was canceled as the door to plane was closing in GSO. The saddest part is I could have driven and arrived sooner. . . I recognize there is a lot going on that impacts travel. This week it was weather. Yesterday in Cincinnati it was President Trump. But as a frequent flyer, the flight from South Bend to Charlotte always runs late. The subsequent flight to Greensboro is always midnight to 2am. . . I do want to give props the Charlotte boarding crew. They had four flights going out of the same area at the same time. They turned it quickly and mitigated the grumbling from the crowd.

Never going to fly your airline again if it can be avoided.

Dloght delayed by 2.5 hrs . Common theme in my last four american floghts

American continues to decline in their customer service and its beyond disappointing.

Mechanical issue delayed us 2hrs and then once we landed sat on tarmac for 30mins because someone left a vehicle in front of the gaye

The crew was excellent and overall the flight was good. No complaints.

I didn't end up taking this flight. I got up at 4am for a flight that was supposed to board at 6am - at 5:55am you delayed the flight to 10am. The airport is under construction so I switched to a later flight as I wasn't going to sit in the airport for 4 hours. They said the delay was due to the crew needing rest from a flight coming in late the night before - if that was the case then I think you should have delayed the flight much sooner so that passengers wouldn't get up so early and get to the airport to sit and wait.

Never had such a lazy first class attendant. Literally spent 60%+ of the flight playing games on her personal phone making up excuses of why she was unavailable.

Everything you need to know for your flight from Colorado Springs to Seattle

Information on your arrival and departure airports