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Cheap flights from Colorado Springs to St. Louis from $144

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 5/9. 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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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
12:27 pm - 4:23 pm
STL
-
COS
4h 56m
1 stop
$221American Airlines
Thu, May 7 - Sat, May 9
Southwest Logo
5:10 pm - 10:15 pm
COS
-
STL
4h 05m
1 stop
Southwest Logo
6:05 am - 12:35 pm
STL
-
COS
7h 30m
1 stop
$287Southwest
Thu, Apr 2 - Sat, Apr 11
Southwest Logo
5:10 pm - 10:15 pm
COS
-
STL
4h 05m
1 stop
Southwest Logo
5:45 am - 10:00 am
STL
-
COS
5h 15m
1 stop
$290Southwest
Thu, Apr 2 - Fri, Apr 10
Southwest Logo
5:10 pm - 10:15 pm
COS
-
STL
4h 05m
1 stop
Southwest Logo
6:10 am - 1:40 pm
STL
-
COS
8h 30m
2 stops
$292Southwest
Thu, Apr 2 - Sat, Apr 11
American Airlines Logo
1:39 pm - 7:29 pm
COS
-
STL
4h 50m
1 stop
American Airlines Logo
5:20 am - 9:27 am
STL
-
COS
5h 07m
1 stop
$293American Airlines
Thu, Apr 2 - Sat, Apr 11
Southwest Logo
4:45 pm - 12:05 am
COS
-
STL
6h 20m
1 stop
Southwest Logo
8:25 am - 4:25 pm
STL
-
COS
9h 00m
2 stops
$295Southwest
Thu, Apr 2 - Sun, Apr 5
Southwest Logo
1:10 pm - 8:20 pm
COS
-
STL
6h 10m
2 stops
Southwest Logo
8:50 am - 3:40 pm
STL
-
COS
7h 50m
2 stops
$297Southwest
Sat, Apr 18 - Sat, Apr 25
Southwest Logo
4:05 pm - 10:40 pm
COS
-
STL
5h 35m
1 stop
Southwest Logo
5:25 am - 11:00 am
STL
-
COS
6h 35m
2 stops
$298Southwest
Fri, May 8 - Sun, May 10
Delta Logo
8:15 am - 5:07 pm
COS
-
STL
7h 52m
1 stop
Delta Logo
2:12 pm - 10:05 pm
STL
-
COS
8h 53m
1 stop
$300Delta
Wed, Apr 8 - Thu, Apr 9
Southwest Logo
5:55 am - 9:00 pm
COS
-
STL
14h 05m
2 stops
Southwest Logo
5:45 am - 10:00 am
STL
-
COS
5h 15m
1 stop
$301Southwest
Thu, Apr 2 - Fri, Apr 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
STL12:27 pmLambert-St Louis
4h 56m
1 stop
COS4:23 pmColorado Springs
$221
American Airlines
Apr 2
COS1:39 pmColorado Springs
4h 50m
1 stop
STL7:29 pmLambert-St Louis
Apr 11
STL5:20 amLambert-St Louis
5h 07m
1 stop
COS9:27 amColorado Springs
$293
American Airlines
Apr 20
COS5:13 pmColorado Springs
4h 46m
1 stop
STL10:59 pmLambert-St Louis
Apr 29
STL5:51 amLambert-St Louis
7h 01m
1 stop
COS11:52 amColorado Springs
$387

United Airlines flights from Colorado Springs to St. Louis

Our best United Airlines deals on Colorado Springs to St. Louis flight tickets
United Airlines
Apr 2
COS7:00 amColorado Springs
5h 08m
1 stop
STL1:08 pmLambert-St Louis
Apr 11
STL6:30 amLambert-St Louis
9h 00m
2 stops
COS2:30 pmColorado Springs
$308
United Airlines
May 7
COS1:25 pmColorado Springs
6h 18m
1 stop
STL8:43 pmLambert-St Louis
May 10
STL6:30 amLambert-St Louis
5h 17m
1 stop
COS10:47 amColorado Springs
$312
United Airlines
Apr 2
COS1:33 pmColorado Springs
6h 21m
1 stop
STL8:54 pmLambert-St Louis
Apr 11
STL8:21 amLambert-St Louis
7h 09m
2 stops
COS2:30 pmColorado Springs
$313

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 March 4, 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

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

12:27 pm-4:23 pm

1 stop4h 56m

$221

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 4/2

5:10 pm-10:15 pm

1 stop4h 05m

Lambert-St Louis

Sat 4/11

6:05 am-12:35 pm

1 stop7h 30m

$287

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 4/2

5:10 pm-10:15 pm

1 stop4h 05m

Lambert-St Louis

Fri 4/10

5:45 am-10:00 am

1 stop5h 15m

$290

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 4/2

5:10 pm-10:15 pm

1 stop4h 05m

Lambert-St Louis

Sat 4/11

6:10 am-1:40 pm

2 stops8h 30m

$292

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 4/2

1:39 pm-7:29 pm

1 stop4h 50m

Lambert-St Louis

Sat 4/11

5:20 am-9:27 am

1 stop5h 07m

$293

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 4/2

4:45 pm-12:05 am

1 stop6h 20m

Lambert-St Louis

Sun 4/5

8:25 am-4:25 pm

2 stops9h 00m

$295

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Sat 4/18

1:10 pm-8:20 pm

2 stops6h 10m

Lambert-St Louis

Sat 4/25

8:50 am-3:40 pm

2 stops7h 50m

$297

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Fri 5/8

4:05 pm-10:40 pm

1 stop5h 35m

Lambert-St Louis

Sun 5/10

5:25 am-11:00 am

2 stops6h 35m

$298

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 4/8

8:15 am-5:07 pm

1 stop7h 52m

Lambert-St Louis

Thu 4/9

2:12 pm-10:05 pm

1 stop8h 53m

$300

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 4/2

5:55 am-9:00 pm

2 stops14h 05m

Lambert-St Louis

Fri 4/10

5:45 am-10:00 am

1 stop5h 15m

$301

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 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 $283.

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 $244. 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 Thursday 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 morning is the least expensive time of day to depart. momondo users have found prices as low as $265 when looking at flights departing in the morning. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $305 per ticket.

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

As of March 2026, prices for Colorado Springs to St. Louis flights are approximately 0% 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 05m

Direct flights

None
The fastest flight from Colorado Springs to St. Louis takes 4h 05m
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

  • 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 05m.

  • 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
4,304 reviews
Search Southwest flights
United AirlinesPriceFrom $266Free CancellationRating
7.4
9,382 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
Florissant
Maryland Heights
O'Fallon
St. Peters
Wentzville
Collinsville
Alton
Fenton
Farmington
Edwardsville
Festus
Clayton
Eureka
Litchfield
Glencoe
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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