SEA - COS

$69 Find Cheap Flights from Seattle to Colorado Springs

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Colorado Springs departing on 11/18. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Colorado Springs, 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 Seattle to Colorado Springs, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$137
Overall average: $490
Delta
Thu 11/13Sun 11/16
SEA - COS • 1 stop
Cheapest one-way
$69
Typical prices: $182-$249
Delta
Tue 11/18
SEA - COS • 1 stop
Top airlines
Delta
Cheapest • from $137 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 18% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 23% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Colorado Springs!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Colorado Springs 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 Seattle to Colorado Springs

Thu, Nov 13 - Sun, Nov 16
Delta Logo
1:44 pm - 10:23 pmSEA-COS
7h 39m1 stop
Delta Logo
6:02 pm - 12:11 amCOS-SEA
7h 09m1 stop
$137Delta
Find Deal
Mon, Dec 8 - Sun, Dec 14
Delta Logo
7:10 am - 5:19 pmSEA-COS
9h 09m2 stops
Delta Logo
6:00 pm - 12:20 amCOS-SEA
7h 20m1 stop
$142Delta
Find Deal
Fri, Nov 14 - Mon, Nov 17
Delta Logo
11:15 am - 5:22 pmSEA-COS
5h 07m1 stop
Delta Logo
6:02 pm - 12:11 amCOS-SEA
7h 09m1 stop
$147Delta
Find Deal
Wed, Dec 10 - Thu, Dec 11
Southwest Logo
9:35 am - 4:35 pmSEA-COS
6h 00m1 stop
Southwest Logo
6:35 am - 12:05 pmCOS-SEA
6h 30m1 stop
$151Southwest
Find Deal
Thu, Nov 13 - Sun, Nov 16
Delta Logo
7:10 am - 5:22 pmSEA-COS
9h 12m2 stops
Delta Logo
6:02 pm - 12:11 amCOS-SEA
7h 09m1 stop
$152Delta
Find Deal
Sun, Dec 7 - Thu, Dec 11
American Airlines Logo
3:51 pm - 11:48 pmSEA-COS
6h 57m1 stop
American Airlines Logo
4:34 pm - 11:01 pmCOS-SEA
7h 27m1 stop
$159American Airlines
Find Deal
Wed, Jan 14 - Sat, Jan 17
American Airlines Logo
7:34 am - 5:41 pmSEA-COS
9h 07m1 stop
American Airlines Logo
8:16 am - 7:22 pmCOS-SEA
12h 06m2 stops
$164American Airlines
Find Deal
Thu, Nov 6 - Sun, Nov 9
United Airlines Logo
3:48 pm - 11:59 pmSEA-COS
7h 11m1 stop
United Airlines Logo
6:00 am - 10:35 amCOS-SEA
5h 35m1 stop
$219United Airlines
Find Deal
Tue, Nov 11 - Tue, Nov 18
United Airlines Logo
12:41 pm - 10:04 pmSEA-COS
8h 23m2 stops
United Airlines Logo
6:00 am - 10:35 amCOS-SEA
5h 35m1 stop
$222United Airlines
Find Deal
Wed, Dec 10 - Thu, Dec 11
Southwest Logo
7:05 am - 4:15 pmSEA-COS
8h 10m2 stops
Southwest Logo
11:50 am - 6:40 pmCOS-SEA
7h 50m1 stop
$230Southwest
Find Deal
Booking Insights

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

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

What’s the cheapest day of the week to fly from Seattle to Colorado Springs?

The average price of all round-trip flights from Seattle to Colorado Springs clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Seattle to Colorado Springs, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Colorado Springs, Thursday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Colorado Springs, 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 Seattle to Colorado Springs is August, where tickets cost $307 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $581 and $490 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Colorado Springs, 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 Seattle to Colorado Springs, you should book around 3 weeks before departure, which saves you about 18% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low seasonApril
Cheapest flight$69
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from Seattle to Colorado Springs

When to book flights from Seattle to Colorado Springs

Are your dates flexible? Find out the best times to travel from Seattle to Colorado Springs 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 Seattle to Colorado Springs

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

    In the last 3 days, the lowest price for a flight from Seattle to Colorado Springs was $69 for a one-way ticket and $137 for a round-trip.

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

    No, a passport isn't needed to fly from Seattle to Colorado Springs. However, local authorities might ask for an official ID.

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Seattle to Colorado Springs are Southwest and Delta. With an average price for the route of $357 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 $296 and an overall rating of 7.9.

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

    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 Seattle to Colorado Springs.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Colorado Springs from Seattle 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 Seattle to Colorado Springs?

    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 Colorado Springs with an airline and back to Seattle with another airline. Booking your flights between Seattle and COS 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 Seattle to Colorado Springs?

    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 Colorado Springs from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Seattle to Colorado Springs

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Colorado Springs. 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 Seattle to Colorado Springs? 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 4239 reviews
8.6Crew
7.0Food
8.1Boarding
8.0Comfort
7.5Entertainment
Airline reviews

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

2.0 MediocreThomas, Oct 2025SAT - STL
Read more Southwest reviews

Boarded on time but once we were ready for take off, the crew determined that, although every seat was taken, somehow someone was on the wrong flight. Delay, delay delay, announcements and ended up with one person checking EVERY ID against their passenger Manifest only to figure out it was a "clerical error." We departed 54 minutes late causing me to run in the St. Louis Airport to make my connection and lose the priority boarding spot I had paid for. Unnecessary delay.

I was re-booked onto another flight because my original flight was delayed and I would have missed my connector. I ended up in the “C” group after paying extra to be in the “A “ group on the original flight. At least if you’re going to re-book people, re-book them into the same group.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

mandatory demand customer to check their carry on because not enough people check bags.

Connecting flight is on time and boarding was a breeze!

Excellent. Would encourage Southwest to keep current boarding procedures with free style seating. Makes for a fantastic experience

As always, the entire Southwest experience was perfect. Purchasing the tickets on the Southwest web site was effortless, departure and arrival gates were spotless and comfortable, plane was clean and comfortable, crew was excellent and flight was on time. Wheelchair service in Las Vegas at departure was somewhat chaotic and disjointed, but I am not sure if that was Southwest problem, airport problem or combination.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

The Southwest employees (all two of them) were very nice and cheerful despite the fact the line to self-check a bag (simply drop it off) was hundreds of people long. Thank God I arrived early to the airport because I stood in this line for at least an hour. Once on the flight that had been delayed by an hour, we had no Wi-Fi and thus no entertainment. Finally, I hope the investor strong arm tactics against Southwest pay off in a short-term windfall to your C-Suite because the rest of you are screwed. I have been a faithful Southwest customer for 15 years due to everything you just got rid of. I'm flying to Idaho and Washington in October, both places I used to simply book with Southwest without a second thought now with Frontier (Washington) and United (Idaho) because they offer everything the "new" Southwest does but cheaper and at better times, destinations, etc. This really makes me sad...

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

The boarding process needs to be refined. Sometimes the gate crew call out the boarding zone, and then flip to the monitor to show which zones are boarding. So unless everyone is gathered around to see the monitor there is usually confusion as wi which zones are boarding.

On time flight. Seat comfort could be better in the Comfort section.

My issue was with TSA agents for delta airlines. My luggage got flagged. The agent was going thru another persons first. He took 20 min to go thru hers. I asked them to bring mine closer so I could sit down . They said you can go sit it will be fine. I said I am supposed to keep my eyes on my bags at all times. The agent was meticulously unwrapping 2 gifts that the lady had and then tried to re warp it. He was trying to be kind i get it but 20 min for me to stand watching him do that was ridiculous. It was 6 am and there were a ton of travelers. Mine was flagged for some air packed tea that I bought in Turkey. My previous delta flight and 2 others before didn’t flag it. Consistency would be nice. Also on the flight the window shades were down for take off and landing - I thought that was very odd I thought they had to remain open for take off and landing.

The flight was an hour and a half late departing which was inconvenient

The entertainment available didn’t work for anyone on the flight. Long 6 hr flight with no entertainment option and the staff didn’t know until an hour into the flight when we made sure they knew about it. They had no way to fix it.

Late FA meant slow boarding. WiFi did not work. I’m a medium plus sized passenger. The seatbelt was for the first time ever barely fitting. And we delayed on the tarmac 40 min

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

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

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

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

Very rough getting into denver. my kid threw up it was so rough.

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

Information on your arrival and departure airports

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