COS - STL

$121 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 4/7. 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
$241
Overall average: $389
Southwest
Thu 5/7Sat 5/9
COS - STL • 1 stop
Cheapest one-way
$121
Typical prices: $484-$592
Delta
Tue 4/7
COS - STL • 1 stop
Top airlines
Cheapest • from $241 (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 St. Louis. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $234 (round-trip)
Shortest trip • 4h 25m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 28% 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 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

Thu, May 7 - Sat, May 9
Southwest Logo
4:05 pm - 12:15 am
COS
-
STL
7h 10m
1 stop
Southwest Logo
5:50 pm - 8:45 pm
STL
-
COS
3h 55m
1 stop
$241Southwest
Mon, Apr 6 - Thu, Apr 9
Southwest Logo
4:45 pm - 12:05 am
COS
-
STL
6h 20m
1 stop
Southwest Logo
5:40 am - 1:35 pm
STL
-
COS
8h 55m
1 stop
$246Southwest
Tue, Apr 21 - Tue, Apr 28
Southwest Logo
7:05 am - 1:00 pm
COS
-
STL
4h 55m
2 stops
Southwest Logo
1:45 pm - 8:15 pm
STL
-
COS
7h 30m
2 stops
$251Southwest
Wed, May 20 - Sat, May 23
Delta Logo
11:55 am - 7:03 pm
COS
-
STL
6h 08m
1 stop
Delta Logo
5:00 pm - 10:22 pm
STL
-
COS
6h 22m
1 stop
$283Delta
Sat, Apr 11 - Sat, Apr 18
Southwest Logo
7:15 am - 4:30 pm
COS
-
STL
8h 15m
2 stops
Southwest Logo
8:45 am - 4:15 pm
STL
-
COS
8h 30m
1 stop
$285Southwest
Thu, Apr 16 - Sun, Apr 19
Southwest Logo
4:05 pm - 10:40 pm
COS
-
STL
5h 35m
1 stop
Southwest Logo
6:15 am - 9:20 am
STL
-
COS
4h 05m
1 stop
$287Southwest
Sat, Apr 11 - Sat, Apr 18
Southwest Logo
7:15 am - 4:30 pm
COS
-
STL
8h 15m
2 stops
Southwest Logo
10:35 am - 8:50 pm
STL
-
COS
11h 15m
2 stops
$290Southwest
Thu, Apr 16 - Sun, Apr 19
Southwest Logo
4:05 pm - 11:55 pm
COS
-
STL
6h 50m
2 stops
Southwest Logo
6:15 am - 9:20 am
STL
-
COS
4h 05m
1 stop
$292Southwest
Mon, Apr 6 - Thu, Apr 9
Southwest Logo
4:45 pm - 12:05 am
COS
-
STL
6h 20m
1 stop
Southwest Logo
11:30 am - 6:45 pm
STL
-
COS
8h 15m
2 stops
$303Southwest
Wed, May 20 - Sat, May 23
Southwest Logo
2:30 pm - 9:15 pm
COS
-
STL
5h 45m
1 stop
Southwest Logo
2:05 pm - 8:45 pm
STL
-
COS
7h 40m
2 stops
$319Southwest
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.

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 August and January, where the average cost of round-trip tickets is $546 and $535 respectively.

Good to know

Low seasonJanuary
Cheapest flight$121
Best time to beat the crowds but there is an average 36% increase in price.
Most popular time to fly and prices are also 17% 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 $121 for a one-way ticket and $241 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 $393 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 $358 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 4320 reviews
8.6Crew
7.5Entertainment
7.0Food
8.0Comfort
8.1Boarding
Airline reviews

We had a 5 hour delay on the tarmac in Baltimore

2.0 MediocreDavid, Mar 2026
ALB - BWI
Read more Southwest reviews

We had a 5 hour delay on the tarmac in Baltimore

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

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

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.

Airport terminal was outdated, flight was on a small jet with no wifi

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.

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.

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

Information on your arrival and departure airports