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Cheap flights from Colorado Springs to St. Louis from $120

This is the cheapest one-way 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 5/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Colorado Springs to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:13 pm - 10:59 pm
COS
-
STL
4h 46m
1 stop
American Airlines Logo
6:11 pm - 11:32 pm
STL
-
COS
6h 21m
1 stop
$241American Airlines
Thu, May 7 - Sat, May 9
American Airlines Logo
3:45 pm - 11:59 pm
COS
-
STL
7h 14m
1 stop
American Airlines Logo
5:25 am - 9:54 am
STL
-
COS
5h 29m
1 stop
$250American Airlines
Wed, Jun 3 - Wed, Jun 10
American Airlines Logo
5:13 pm - 10:59 pm
COS
-
STL
4h 46m
1 stop
American Airlines Logo
5:25 am - 9:54 am
STL
-
COS
5h 29m
1 stop
$277American Airlines
Wed, May 20 - Sun, May 24
American Airlines Logo
5:40 am - 11:27 am
COS
-
STL
4h 47m
1 stop
American Airlines Logo
7:12 am - 12:49 pm
STL
-
COS
6h 37m
1 stop
$293American Airlines
Wed, May 13 - Wed, May 20
United Airlines Logo
1:25 pm - 9:13 pm
COS
-
STL
6h 48m
2 stops
United Airlines Logo
5:59 pm - 9:57 pm
STL
-
COS
4h 58m
1 stop
$299United Airlines
Sat, May 9 - Mon, May 11
Southwest Logo
9:10 am - 5:55 pm
COS
-
STL
7h 45m
2 stops
Southwest Logo
8:45 am - 7:15 pm
STL
-
COS
11h 30m
1 stop
$310Southwest
Wed, Jun 3 - Wed, Jun 10
United Airlines Logo
6:30 pm - 11:57 pm
COS
-
STL
4h 27m
1 stop
United Airlines Logo
5:10 am - 8:41 am
STL
-
COS
4h 31m
1 stop
$311United Airlines
Sat, May 30 - Tue, Jun 9
Southwest Logo
9:10 am - 5:55 pm
COS
-
STL
7h 45m
2 stops
Southwest Logo
4:00 pm - 10:55 pm
STL
-
COS
7h 55m
2 stops
$316Southwest
Wed, Jun 3 - Wed, Jun 10
Delta Logo
11:55 am - 7:03 pm
COS
-
STL
6h 08m
1 stop
Delta Logo
4:19 pm - 9:54 pm
STL
-
COS
6h 35m
1 stop
$319Delta
Thu, May 28 - Wed, Jun 10
Delta Logo
11:55 am - 11:59 pm
COS
-
STL
11h 04m
2 stops
Delta Logo
4:19 pm - 9:54 pm
STL
-
COS
6h 35m
1 stop
$324Delta
Thu, May 28 - Wed, Jun 10

American Airlines flights from Colorado Springs to St. Louis

Our best American Airlines deals on Colorado Springs to St. Louis flight tickets
American Airlines
May 7
COS5:13 pmColorado Springs
4h 46m
1 stop
STL10:59 pmLambert-St Louis
May 9
STL6:11 pmLambert-St Louis
6h 21m
1 stop
COS11:32 pmColorado Springs
$241
American Airlines
Jun 3
COS3:45 pmColorado Springs
7h 14m
1 stop
STL11:59 pmLambert-St Louis
Jun 10
STL5:25 amLambert-St Louis
5h 29m
1 stop
COS9:54 amColorado Springs
$250
American Airlines
May 13
COS5:40 amColorado Springs
4h 47m
1 stop
STL11:27 amLambert-St Louis
May 20
STL7:12 amLambert-St Louis
6h 37m
1 stop
COS12:49 pmColorado Springs
$293

United Airlines flights from Colorado Springs to St. Louis

Our best United Airlines deals on Colorado Springs to St. Louis flight tickets
United Airlines
May 9
COS1:25 pmColorado Springs
6h 48m
2 stops
STL9:13 pmLambert-St Louis
May 11
STL5:59 pmLambert-St Louis
4h 58m
1 stop
COS9:57 pmColorado Springs
$299
United Airlines
May 30
COS6:30 pmColorado Springs
4h 27m
1 stop
STL11:57 pmLambert-St Louis
Jun 9
STL5:10 amLambert-St Louis
4h 31m
1 stop
COS8:41 amColorado Springs
$311
United Airlines
May 7
COS11:40 amColorado Springs
4h 17m
1 stop
STL4:57 pmLambert-St Louis
May 11
STL5:59 pmLambert-St Louis
7h 00m
1 stop
COS11:59 pmColorado Springs
$334

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 April 21, 2026.
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

Cheapest round-trip

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 5/7

5:13 pm-10:59 pm

1 stop4h 46m

Lambert-St Louis

Sat 5/9

6:11 pm-11:32 pm

1 stop6h 21m

$241

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 6/3

3:45 pm-11:59 pm

1 stop7h 14m

Lambert-St Louis

Wed 6/10

5:25 am-9:54 am

1 stop5h 29m

$250

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 5/20

5:13 pm-10:59 pm

1 stop4h 46m

Lambert-St Louis

Sun 5/24

5:25 am-9:54 am

1 stop5h 29m

$277

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 5/13

5:40 am-11:27 am

1 stop4h 47m

Lambert-St Louis

Wed 5/20

7:12 am-12:49 pm

1 stop6h 37m

$293

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Sat 5/9

1:25 pm-9:13 pm

2 stops6h 48m

Lambert-St Louis

Mon 5/11

5:59 pm-9:57 pm

1 stop4h 58m

$299

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 6/3

9:10 am-5:55 pm

2 stops7h 45m

Lambert-St Louis

Wed 6/10

8:45 am-7:15 pm

1 stop11h 30m

$310
Quickest round-trip

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Sat 5/30

6:30 pm-11:57 pm

1 stop4h 27m

Lambert-St Louis

Tue 6/9

5:10 am-8:41 am

1 stop4h 31m

$311

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 6/3

9:10 am-5:55 pm

2 stops7h 45m

Lambert-St Louis

Wed 6/10

4:00 pm-10:55 pm

2 stops7h 55m

$316

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 5/28

11:55 am-7:03 pm

1 stop6h 08m

Lambert-St Louis

Wed 6/10

4:19 pm-9:54 pm

1 stop6h 35m

$319

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 5/28

11:55 am-11:59 pm

2 stops11h 04m

Lambert-St Louis

Wed 6/10

4:19 pm-9:54 pm

1 stop6h 35m

$324

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between Colorado Springs and St. Louis?

What is the cheapest month to fly to St. Louis?

In general, November 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 $281. The month of September is another great option to travel to St. Louis, with average flight prices from Colorado Springs averaging around $320.

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

As of April 2026, prices for Colorado Springs to St. Louis flights are approximately 32% 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

Fastest flight time

4h 00m

Direct flights

None
The fastest flight from Colorado Springs to St. Louis takes 4h 00m
There are no direct flights from Colorado Springs to St. Louis. There are no popular flight routes from Colorado Springs to St. Louis.
Search flight deals

Frequently asked questions about flying from Colorado Springs to St. Louis

  • 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 4h 00m.

  • 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 $233Free CancellationRating
8.0
4,330 reviews
Search Southwest flights
United AirlinesPriceFrom $271Free CancellationRating
7.4
9,614 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
O'Fallon
Florissant
St. Peters
Collinsville
Wentzville
Alton
Fenton
Farmington
Festus
Clayton
Eureka
Litchfield
Edwardsville
Shrewsbury
Grafton

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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