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Cheap flights from Colorado Springs to St. Louis from $256

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado Springs to St. Louis departing on 12/12. 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

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Multiple Airlines Logo
5:48 pm - 12:12 pmCOS-STL
41h 24m2 stops
Multiple Airlines Logo
8:42 pm - 6:14 pmSTL-COS
22h 32m1 stop
$256Multiple Airlines
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Fri, Dec 12 - Fri, Jan 2
United Airlines Logo
10:33 am - 4:43 pmCOS-STL
5h 10m1 stop
United Airlines Logo
8:45 am - 2:34 pmSTL-COS
6h 49m1 stop
$281United Airlines
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Wed, Jan 14 - Wed, Jan 21
United Airlines Logo
1:25 pm - 10:58 pmCOS-STL
8h 33m2 stops
United Airlines Logo
8:45 am - 12:22 pmSTL-COS
4h 37m1 stop
$286United Airlines
Find Deal
Wed, Jan 14 - Wed, Jan 21
United Airlines Logo
7:30 am - 3:52 pmCOS-STL
7h 22m1 stop
United Airlines Logo
6:00 pm - 10:06 pmSTL-COS
5h 06m1 stop
$287United Airlines
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Thu, Jan 8 - Sun, Jan 11
United Airlines Logo
11:25 am - 4:28 pmCOS-STL
4h 03m1 stop
United Airlines Logo
5:27 pm - 9:57 pmSTL-COS
5h 30m1 stop
$293United Airlines
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Fri, Dec 5 - Sun, Dec 7
Delta Logo
5:55 pm - 8:07 amCOS-STL
13h 12m2 stops
Delta Logo
6:00 am - 12:59 pmSTL-COS
7h 59m1 stop
$298Delta
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Tue, Apr 14 - Sun, Apr 19
Southwest Logo
1:45 pm - 9:55 pmCOS-STL
7h 10m2 stops
Southwest Logo
11:55 am - 7:20 pmSTL-COS
8h 25m2 stops
$303Southwest
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Wed, Jan 14 - Wed, Jan 21
Southwest Logo
7:20 am - 4:50 pmCOS-STL
8h 30m2 stops
Southwest Logo
9:40 am - 5:25 pmSTL-COS
8h 45m2 stops
$324Southwest
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Thu, Jan 8 - Sun, Jan 11
American Airlines Logo
5:33 am - 12:32 pmCOS-STL
5h 59m1 stop
American Airlines Logo
6:44 pm - 11:47 pmSTL-COS
6h 03m1 stop
$340American Airlines
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Fri, Dec 12 - Fri, Jan 2
Delta Logo
8:10 am - 9:02 pmCOS-STL
11h 52m2 stops
Delta Logo
6:00 am - 12:36 pmSTL-COS
7h 36m1 stop
$345Delta
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Fri, Dec 5 - Sun, Dec 7

United Airlines flights from Colorado Springs to St. Louis

Our best United Airlines deals on Colorado Springs to St. Louis flight tickets
United Airlines
Jan 14
COS10:33 amColorado Springs
5h 10m
1 stop
STL4:43 pmLambert-St Louis
Jan 21
STL8:45 amLambert-St Louis
6h 49m
1 stop
COS2:34 pmColorado Springs
$281
Find similar
United Airlines
Jan 14
COS1:25 pmColorado Springs
8h 33m
2 stops
STL10:58 pmLambert-St Louis
Jan 21
STL8:45 amLambert-St Louis
4h 37m
1 stop
COS12:22 pmColorado Springs
$286
Find similar
United Airlines
Jan 8
COS7:30 amColorado Springs
7h 22m
1 stop
STL3:52 pmLambert-St Louis
Jan 11
STL6:00 pmLambert-St Louis
5h 06m
1 stop
COS10:06 pmColorado Springs
$287
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Delta flights from Colorado Springs to St. Louis

Our best Delta deals on Colorado Springs to St. Louis flight tickets
Delta
Apr 14
COS5:55 pmColorado Springs
13h 12m
2 stops
STL8:07 amLambert-St Louis
Apr 19
STL6:00 amLambert-St Louis
7h 59m
1 stop
COS12:59 pmColorado Springs
$298
Find similar
Delta
Dec 5
COS8:10 amColorado Springs
11h 52m
2 stops
STL9:02 pmLambert-St Louis
Dec 7
STL6:00 amLambert-St Louis
7h 36m
1 stop
COS12:36 pmColorado Springs
$345
Find similar
Delta
Nov 12
COS6:00 amColorado Springs
6h 00m
1 stop
STL1:00 pmLambert-St Louis
Nov 16
STL2:21 pmLambert-St Louis
9h 02m
1 stop
COS10:23 pmColorado Springs
$427
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momondo Fare Finder

 
Customize your flight search to find flights from Colorado Springs to St. Louis 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 October 30, 2025.
Use the filters below to find and compare flights from Colorado Springs to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Fri 12/12

5:48 pm-12:12 pm

2 stops41h 24m

Lambert-St Louis

Fri 1/2

8:42 pm-6:14 pm

1 stop22h 32m

$256

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 1/14

10:33 am-4:43 pm

1 stop5h 10m

Lambert-St Louis

Wed 1/21

8:45 am-2:34 pm

1 stop6h 49m

$281

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 1/14

1:25 pm-10:58 pm

2 stops8h 33m

Lambert-St Louis

Wed 1/21

8:45 am-12:22 pm

1 stop4h 37m

$286

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 1/8

7:30 am-3:52 pm

1 stop7h 22m

Lambert-St Louis

Sun 1/11

6:00 pm-10:06 pm

1 stop5h 06m

$287

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Fri 12/5

11:25 am-4:28 pm

1 stop4h 03m

Lambert-St Louis

Sun 12/7

5:27 pm-9:57 pm

1 stop5h 30m

$293

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Tue 4/14

5:55 pm-8:07 am

2 stops13h 12m

Lambert-St Louis

Sun 4/19

6:00 am-12:59 pm

1 stop7h 59m

$298

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 1/14

1:45 pm-9:55 pm

2 stops7h 10m

Lambert-St Louis

Wed 1/21

11:55 am-7:20 pm

2 stops8h 25m

$303

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 1/8

7:20 am-4:50 pm

2 stops8h 30m

Lambert-St Louis

Sun 1/11

9:40 am-5:25 pm

2 stops8h 45m

$324

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Fri 12/12

5:33 am-12:32 pm

1 stop5h 59m

Lambert-St Louis

Fri 1/2

6:44 pm-11:47 pm

1 stop6h 03m

$340

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Fri 12/5

8:10 am-9:02 pm

2 stops11h 52m

Lambert-St Louis

Sun 12/7

6:00 am-12:36 pm

1 stop7h 36m

$345

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to St. Louis from

How to get the cheapest flight ticket from Colorado Springs to St. Louis

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 St. Louis?

In general, September is the cheapest month to fly from Colorado Springs to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $283. The month of November is another great option to travel to St. Louis, with average flight prices from Colorado Springs averaging around $297.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Friday when prices can be found for as low as $224. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $320. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Colorado Springs in the evening is the least expensive time of day to depart. momondo users have found prices as low as $244 when looking at flights departing in the evening. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $308 per ticket.

How have Colorado Springs to St. Louis flight prices changed over time?

As of October 2025, prices for Colorado Springs to St. Louis flights are approximately 3% more expensive when compared to flights at the same time last year.

When to book flights from Colorado Springs to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Colorado Springs to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Colorado Springs to St. Louis (COS to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado Springs to St. Louis

Direct flights

None
There are no direct flights from Colorado Springs to St. Louis. There are no popular flight routes from Colorado Springs to St. Louis.
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  • How far is Colorado Springs to Lambert-St Louis by plane?

    A flight from Colorado Springs to Lambert-St Louis will travel around 786.9 mi. A reasonable flight in good conditions will take 3h 55m.

  • When did momondo last update prices for flights from Colorado Springs Airport to Lambert-St Louis Airport?

    Prices for flights from Colorado Springs Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Colorado Springs Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Colorado Springs Airport to Lambert-St Louis 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 Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Colorado Springs to St. Louis?

Best airlines flying from Colorado Springs to St. Louis

Compare and see reviews for airlines that fly from Colorado Springs to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $234Free CancellationRating
8.0
4,243 reviews
Search Southwest flights
United AirlinesPriceFrom $266Free CancellationRating
7.4
8,996 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
Eureka
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Colorado Springs to St. Louis?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Colorado Springs to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Colorado Springs to St. Louis with flexible booking policies on momondo?

Flights from Colorado Springs to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Colorado Springs to St. Louis?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Colorado Springs to St. Louis.

I’m not ready to book a flight from Colorado Springs to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Colorado Springs to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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