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Cheap flights from St. Louis to Denver from $291

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Denver departing on 1/21. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
7:10 am - 12:23 pm
STL
-
COS
6h 13m1 stop
Delta Logo
12:00 pm - 9:38 pm
COS
-
STL
8h 38m1 stop
$291Delta
Wed, Jan 21 - Wed, Jan 28
Delta Logo
6:00 am - 12:23 pm
STL
-
COS
7h 23m1 stop
Delta Logo
12:03 pm - 9:38 pm
COS
-
STL
8h 35m1 stop
$292Delta
Sat, Jan 31 - Wed, Feb 4
American Airlines Logo
11:55 am - 5:41 pm
STL
-
COS
6h 46m1 stop
American Airlines Logo
8:16 am - 4:14 pm
COS
-
STL
6h 58m1 stop
$293American Airlines
Mon, Feb 2 - Thu, Feb 5
Delta Logo
7:10 am - 12:23 pm
STL
-
COS
6h 13m1 stop
Delta Logo
12:03 pm - 11:37 pm
COS
-
STL
10h 34m2 stops
$297Delta
Sat, Jan 31 - Wed, Feb 4
United Airlines Logo
6:00 pm - 10:06 pm
STL
-
COS
5h 06m1 stop
United Airlines Logo
11:33 am - 9:13 pm
COS
-
STL
8h 40m2 stops
$298United Airlines
Wed, Jan 21 - Wed, Jan 28
United Airlines Logo
8:26 am - 2:20 pm
STL
-
COS
6h 54m2 stops
United Airlines Logo
1:32 pm - 9:03 pm
COS
-
STL
6h 31m2 stops
$303United Airlines
Tue, Apr 14 - Tue, Apr 21
United Airlines Logo
6:05 pm - 11:56 pm
STL
-
COS
6h 51m1 stop
United Airlines Logo
1:32 pm - 10:59 pm
COS
-
STL
8h 27m2 stops
$322United Airlines
Fri, Mar 20 - Tue, Mar 24
Southwest Logo
10:15 am - 5:05 pm
STL
-
COS
7h 50m2 stops
Southwest Logo
6:40 am - 3:00 pm
COS
-
STL
7h 20m2 stops
$323Southwest
Wed, Jan 21 - Wed, Jan 28
Southwest Logo
3:25 pm - 11:20 pm
STL
-
COS
8h 55m2 stops
Southwest Logo
5:00 am - 11:00 am
COS
-
STL
5h 00m1 stop
$325Southwest
Fri, Feb 27 - Sun, Mar 1
Southwest Logo
1:50 pm - 7:30 pm
STL
-
COS
6h 40m2 stops
Southwest Logo
7:20 am - 4:50 pm
COS
-
STL
8h 30m2 stops
$329Southwest
Sat, Jan 31 - Wed, Feb 4

Delta flights from St. Louis to Colorado Springs

Our best Delta deals on St. Louis to Colorado Springs flight tickets
Delta
Jan 21
STL7:10 amLambert-St Louis
6h 13m
1 stop
COS12:23 pmColorado Springs
Jan 28
COS12:00 pmColorado Springs
8h 38m
1 stop
STL9:38 pmLambert-St Louis
$291
Find similar
Delta
Jan 31
STL6:00 amLambert-St Louis
7h 23m
1 stop
COS12:23 pmColorado Springs
Feb 4
COS12:03 pmColorado Springs
8h 35m
1 stop
STL9:38 pmLambert-St Louis
$292
Find similar
Delta
Jan 31
STL7:10 amLambert-St Louis
6h 13m
1 stop
COS12:23 pmColorado Springs
Feb 4
COS12:03 pmColorado Springs
10h 34m
2 stops
STL11:37 pmLambert-St Louis
$297
Find similar

American Airlines flights from St. Louis to Colorado Springs

Our best American Airlines deals on St. Louis to Colorado Springs flight tickets
American Airlines
Feb 2
STL11:55 amLambert-St Louis
6h 46m
1 stop
COS5:41 pmColorado Springs
Feb 5
COS8:16 amColorado Springs
6h 58m
1 stop
STL4:14 pmLambert-St Louis
$293
Find similar
American Airlines
Dec 22
STL7:00 amLambert-St Louis
5h 47m
1 stop
COS11:47 amColorado Springs
Dec 28
COS12:38 pmColorado Springs
5h 44m
1 stop
STL7:22 pmLambert-St Louis
$664
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Colorado Springs 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 December 18, 2025.
Use the filters below to find and compare flights from St. Louis to Colorado Springs that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Wed 1/21

7:10 am-12:23 pm

1 stop6h 13m

Colorado Springs

Wed 1/28

12:00 pm-9:38 pm

1 stop8h 38m

$291

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Sat 1/31

6:00 am-12:23 pm

1 stop7h 23m

Colorado Springs

Wed 2/4

12:03 pm-9:38 pm

1 stop8h 35m

$292

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Mon 2/2

11:55 am-5:41 pm

1 stop6h 46m

Colorado Springs

Thu 2/5

8:16 am-4:14 pm

1 stop6h 58m

$293

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Sat 1/31

7:10 am-12:23 pm

1 stop6h 13m

Colorado Springs

Wed 2/4

12:03 pm-11:37 pm

2 stops10h 34m

$297

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Wed 1/21

6:00 pm-10:06 pm

1 stop5h 06m

Colorado Springs

Wed 1/28

11:33 am-9:13 pm

2 stops8h 40m

$298

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Tue 4/14

8:26 am-2:20 pm

2 stops6h 54m

Colorado Springs

Tue 4/21

1:32 pm-9:03 pm

2 stops6h 31m

$303

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Fri 3/20

6:05 pm-11:56 pm

1 stop6h 51m

Colorado Springs

Tue 3/24

1:32 pm-10:59 pm

2 stops8h 27m

$322

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Wed 1/21

10:15 am-5:05 pm

2 stops7h 50m

Colorado Springs

Wed 1/28

6:40 am-3:00 pm

2 stops7h 20m

$323

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Fri 2/27

3:25 pm-11:20 pm

2 stops8h 55m

Colorado Springs

Sun 3/1

5:00 am-11:00 am

1 stop5h 00m

$325

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Sat 1/31

1:50 pm-7:30 pm

2 stops6h 40m

Colorado Springs

Wed 2/4

7:20 am-4:50 pm

2 stops8h 30m

$329

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Denver from

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

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 St. Louis and Colorado Springs?

What is the cheapest month to fly to Colorado Springs?

The month of February is another great option to travel to Colorado Springs, with average flight prices from St. Louis averaging around $326.

What is the cheapest day to depart on your flight to Colorado Springs?

The cheapest day to depart from St. Louis to Colorado Springs is on a Wednesday when prices can be found for as low as $346. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Colorado Springs for around $455.

What is the cheapest time of day to depart on your flight to Colorado Springs?

Flying to Colorado Springs from St. Louis at noon is the least expensive time of day to depart. momondo users have found prices as low as $349 when looking at flights departing at noon. Flights to Colorado Springs are more costly in the afternoon, with an average ticket price of $426. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

As of December 2025, prices for St. Louis to Colorado Springs flights are approximately 41% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Colorado Springs

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

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

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

Fastest flight time

5h 54m

Direct flights

None
The fastest flight from St. Louis to Colorado Springs takes 5h 54m
There are no direct flights from St. Louis to Colorado Springs. There are no popular flight routes from St. Louis to Colorado Springs.
Search flight deals

  • How far is Lambert-St Louis to Colorado Springs by plane?

    A flight from Lambert-St Louis to Colorado Springs will travel around 786.9 mi. In terms of flight time, this usually takes a little over 5h 54m.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Colorado Springs Airport.

  • What documentation or ID do you need to fly to Colorado Springs Airport?

    The travel and health documents required for your trip to Colorado Springs Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Colorado Springs Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from St. Louis to Colorado Springs

Compare and see reviews for airlines that fly from St. Louis to Colorado Springs with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $236Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
United AirlinesPriceFrom $276Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights
SouthwestPriceFrom $281Free CancellationRating
7.9
4,250 reviews
Search Southwest flights
DeltaPriceFrom $281Free CancellationRating
7.9
8,005 reviews
Search Delta flights

  • Southwest Flights From St. Louis to Colorado Springs

    Southwest operates around 1 flight from St. Louis to Colorado Springs every week. The average price of these flights found in the last 72 hours has been $368, but momondo users have found Southwest deals from St. Louis to Colorado Springs from as low as $281 round-trip. Southwest has been scored 7.9/10 in 4,250 reviews.

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Cañon City

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Colorado Springs for you.

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

Flights from St. Louis to Colorado Springs 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 St. Louis to Colorado Springs?

momondo provides multiple filters to help you find the best flight to Colorado Springs from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Colorado Springs from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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