COS - STL

$147 Find Cheap Flights from Colorado Springs to St. Louis

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 St. Louis departing on 3/26. 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 St. Louis

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

Cheapest round-trip
$293
Typical prices: $353-$548
Delta
Fri 3/6Mon 3/9
COS - STL • 1 stop
Cheapest one-way
$147
Typical prices: $132-$195
United Airlines
Thu 3/26
COS - STL • 1 stop
Top airlines
Delta
Cheapest • from $293 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 32% price drop
April
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 St. Louis!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Colorado Springs to St. Louis (COS-STL)

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

Fri, Mar 6 - Mon, Mar 9
Delta Logo
7:55 am - 5:42 pm
COS
-
STL
8h 47m
1 stop
Delta Logo
6:00 am - 12:31 pm
STL
-
COS
7h 31m
1 stop
$293Delta
Wed, Mar 11 - Thu, Mar 12
United Airlines Logo
5:15 pm - 11:34 pm
COS
-
STL
5h 19m
1 stop
United Airlines Logo
5:15 am - 8:49 am
STL
-
COS
4h 34m
1 stop
$309United Airlines
Wed, Mar 11 - Thu, Mar 12
United Airlines Logo
1:32 pm - 9:07 pm
COS
-
STL
6h 35m
2 stops
United Airlines Logo
5:15 am - 8:49 am
STL
-
COS
4h 34m
1 stop
$315United Airlines
Fri, Mar 13 - Mon, Mar 16
United Airlines Logo
1:32 pm - 8:41 pm
COS
-
STL
6h 09m
1 stop
United Airlines Logo
5:55 pm - 10:02 pm
STL
-
COS
5h 07m
1 stop
$316United Airlines
Fri, Mar 6 - Sun, Mar 8
United Airlines Logo
3:25 pm - 8:41 pm
COS
-
STL
4h 16m
1 stop
United Airlines Logo
5:55 pm - 11:56 pm
STL
-
COS
7h 01m
1 stop
$320United Airlines
Mon, Apr 6 - Thu, Apr 30
Southwest Logo
4:45 pm - 12:05 am
COS
-
STL
6h 20m
1 stop
Southwest Logo
5:45 am - 10:00 am
STL
-
COS
5h 15m
1 stop
$323Southwest
Wed, Apr 29 - Sun, May 3
Southwest Logo
6:30 am - 2:50 pm
COS
-
STL
7h 20m
1 stop
Southwest Logo
8:30 am - 1:10 pm
STL
-
COS
5h 40m
1 stop
$327Southwest
Wed, Apr 29 - Sun, May 3
Southwest Logo
10:25 am - 8:00 pm
COS
-
STL
8h 35m
2 stops
Southwest Logo
8:30 am - 1:10 pm
STL
-
COS
5h 40m
1 stop
$332Southwest
Thu, Mar 26 - Tue, Mar 31
United Airlines Logo
1:32 pm - 9:15 pm
COS
-
STL
6h 43m
2 stops
United Airlines Logo
8:54 am - 12:36 pm
STL
-
COS
4h 42m
1 stop
$334United Airlines
Mon, Apr 6 - Thu, Apr 9
Southwest Logo
4:45 pm - 10:10 pm
COS
-
STL
4h 25m
1 stop
Southwest Logo
8:25 am - 1:35 pm
STL
-
COS
6h 10m
1 stop
$337Southwest
Booking Insights

KAYAK's insights & trends for Colorado Springs to St. Louis flights

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

How much is a round-trip flight from Colorado Springs to St. Louis?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Colorado Springs to St. Louis departing in March.

What is the cheapest month to fly from Colorado Springs to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Colorado Springs to St. Louis, 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 St. Louis is November, where tickets cost $281 (return) on average. On the other hand, the most expensive months are January and August, where the average cost of round-trip tickets is $623 and $546 respectively.

Find deals

Good to know

Low seasonJanuary
Cheapest flight$147
Best time to beat the crowds but there is an average 51% increase in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Colorado Springs to St. Louis

When to book flights from Colorado Springs to St. Louis

Are your dates flexible? Find out the best times to travel from Colorado Springs to St. Louis 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 St. Louis

  • What is the cheapest flight from Colorado Springs to St. Louis?

    In the last 3 days, the lowest price for a flight from Colorado Springs to St. Louis was $147 for a one-way ticket and $293 for a round-trip.

  • Do I need a passport to fly between Colorado Springs and St. Louis?

    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 St. Louis?

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

  • Which airline alliances offer flights from Colorado Springs to St. Louis?

    Star Alliance is the only airline alliance operating flights between Colorado Springs and St. Louis.

  • Which is the best airline for flights from Colorado Springs to St. Louis, Southwest or United Airlines?

    The two airlines most popular with KAYAK users for flights from Colorado Springs to St. Louis are Southwest and United Airlines. With an average price for the route of $389 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $372 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Colorado Springs to St. Louis?

    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 St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis 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 St. Louis?

    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 St. Louis with an airline and back to Colorado Springs with another airline. Booking your flights between Colorado Springs and STL 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 St. Louis?

    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 St. Louis 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 airlines flying from Colorado Springs to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Colorado Springs to St. Louis. 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 St. Louis? 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 4267 reviews
7.5Entertainment
8.0Comfort
8.6Crew
8.1Boarding
7.0Food
Airline reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

10.0 ExcellentAnonymous, Jan 2026
PHX - MDW
Read more Southwest reviews

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

Everything went smoothly and we even arrived a little bit early.

Great vacation. Can't wait till next year for another one.

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

The seats were comfortable, and the boarding process was pretty smooth.

3 hour delay. Had to change plans and was still delayed.

The staff was very friendly, professional, and courteous. The overall flight was a great experience.

The crew canceled the complementary snack and drink in anticipation of turbulence that never materialized. I was counting on the drink (water) to take the the doses of medication - prescribed for my heart condition - that were due during the flight. Since no snack or meal was served on this flight, I cannot rate the food quality. Otherwise, this flight was excellent.

Departure was delayed more than 1/2 hour while we waited for luggage (only) transfer from another flight/plane. Once approved for takeoff, the flight was excellent.

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

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

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

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

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.

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

Everything you need to know for your flight from Colorado Springs to St. Louis

Information on your arrival and departure airports

Colorado Springs (COS)
St. Louis (STL)