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Cheap flights from St. Louis to Denver from $108

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Denver departing on 3/23. 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 St. Louis to Denver

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:00 pm - 10:05 pm
STL
-
COS
6h 05m
1 stop
Delta Logo
8:15 am - 2:43 pm
COS
-
STL
5h 28m
1 stop
$197Delta
Sat, Apr 4 - Sat, Apr 11
United Airlines Logo
5:15 am - 8:49 am
STL
-
COS
4h 34m
1 stop
United Airlines Logo
5:15 pm - 11:34 pm
COS
-
STL
5h 19m
1 stop
$207United Airlines
Mon, Mar 9 - Tue, Mar 10
Delta Logo
6:00 am - 12:31 pm
STL
-
COS
7h 31m
1 stop
Delta Logo
8:15 am - 5:07 pm
COS
-
STL
7h 52m
1 stop
$209Delta
Mon, Mar 9 - Tue, Mar 17
United Airlines Logo
5:15 am - 8:49 am
STL
-
COS
4h 34m
1 stop
United Airlines Logo
1:32 pm - 10:59 pm
COS
-
STL
8h 27m
2 stops
$212United Airlines
Mon, Mar 9 - Tue, Mar 10
United Airlines Logo
5:15 am - 8:49 am
STL
-
COS
4h 34m
1 stop
United Airlines Logo
1:32 pm - 9:07 pm
COS
-
STL
6h 35m
2 stops
$235United Airlines
Mon, Mar 9 - Tue, Mar 17
Delta Logo
7:03 am - 12:33 pm
STL
-
COS
6h 30m
1 stop
Delta Logo
8:15 am - 5:07 pm
COS
-
STL
7h 52m
1 stop
$246Delta
Tue, Apr 7 - Fri, Apr 10
United Airlines Logo
6:05 pm - 9:57 pm
STL
-
COS
4h 52m
1 stop
United Airlines Logo
1:33 pm - 8:54 pm
COS
-
STL
6h 21m
1 stop
$247United Airlines
Mon, Apr 20 - Thu, Apr 23
Delta Logo
12:28 pm - 10:05 pm
STL
-
COS
10h 37m
2 stops
Delta Logo
8:15 am - 5:07 pm
COS
-
STL
7h 52m
1 stop
$251Delta
Tue, Apr 7 - Fri, Apr 10
United Airlines Logo
6:05 pm - 9:57 pm
STL
-
COS
4h 52m
1 stop
United Airlines Logo
1:33 pm - 10:56 pm
COS
-
STL
8h 23m
2 stops
$275United Airlines
Mon, Apr 20 - Wed, Apr 22
American Airlines Logo
5:12 am - 9:50 am
STL
-
COS
5h 38m
1 stop
American Airlines Logo
1:39 pm - 7:29 pm
COS
-
STL
4h 50m
1 stop
$282American Airlines
Sun, Mar 8 - Wed, Mar 11

Delta flights from St. Louis to Colorado Springs

Our best Delta deals on St. Louis to Colorado Springs flight tickets
Delta
Apr 4
STL5:00 pmLambert-St Louis
6h 05m
1 stop
COS10:05 pmColorado Springs
Apr 11
COS8:15 amColorado Springs
5h 28m
1 stop
STL2:43 pmLambert-St Louis
$197
Delta
Mar 9
STL6:00 amLambert-St Louis
7h 31m
1 stop
COS12:31 pmColorado Springs
Mar 17
COS8:15 amColorado Springs
7h 52m
1 stop
STL5:07 pmLambert-St Louis
$209
Delta
Apr 7
STL7:03 amLambert-St Louis
6h 30m
1 stop
COS12:33 pmColorado Springs
Apr 10
COS8:15 amColorado Springs
7h 52m
1 stop
STL5:07 pmLambert-St Louis
$246

United Airlines flights from St. Louis to Colorado Springs

Our best United Airlines deals on St. Louis to Colorado Springs flight tickets
United Airlines
Mar 9
STL5:15 amLambert-St Louis
4h 34m
1 stop
COS8:49 amColorado Springs
Mar 10
COS5:15 pmColorado Springs
5h 19m
1 stop
STL11:34 pmLambert-St Louis
$207
United Airlines
Mar 9
STL5:15 amLambert-St Louis
4h 34m
1 stop
COS8:49 amColorado Springs
Mar 10
COS1:32 pmColorado Springs
8h 27m
2 stops
STL10:59 pmLambert-St Louis
$212
United Airlines
Mar 9
STL5:15 amLambert-St Louis
4h 34m
1 stop
COS8:49 amColorado Springs
Mar 17
COS1:32 pmColorado Springs
6h 35m
2 stops
STL9:07 pmLambert-St Louis
$235

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 February 15, 2026.
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

Sat 4/4

5:00 pm-10:05 pm

1 stop6h 05m

Colorado Springs

Sat 4/11

8:15 am-2:43 pm

1 stop5h 28m

$197

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Mon 3/9

5:15 am-8:49 am

1 stop4h 34m

Colorado Springs

Tue 3/10

5:15 pm-11:34 pm

1 stop5h 19m

$207

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Mon 3/9

6:00 am-12:31 pm

1 stop7h 31m

Colorado Springs

Tue 3/17

8:15 am-5:07 pm

1 stop7h 52m

$209

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Mon 3/9

5:15 am-8:49 am

1 stop4h 34m

Colorado Springs

Tue 3/10

1:32 pm-10:59 pm

2 stops8h 27m

$212

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Mon 3/9

5:15 am-8:49 am

1 stop4h 34m

Colorado Springs

Tue 3/17

1:32 pm-9:07 pm

2 stops6h 35m

$235

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Tue 4/7

7:03 am-12:33 pm

1 stop6h 30m

Colorado Springs

Fri 4/10

8:15 am-5:07 pm

1 stop7h 52m

$246

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Mon 4/20

6:05 pm-9:57 pm

1 stop4h 52m

Colorado Springs

Thu 4/23

1:33 pm-8:54 pm

1 stop6h 21m

$247

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Tue 4/7

12:28 pm-10:05 pm

2 stops10h 37m

Colorado Springs

Fri 4/10

8:15 am-5:07 pm

1 stop7h 52m

$251

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Mon 4/20

6:05 pm-9:57 pm

1 stop4h 52m

Colorado Springs

Wed 4/22

1:33 pm-10:56 pm

2 stops8h 23m

$275

St. LouisColorado Springs

STL - COS

STLCOS

Lambert-St Louis

Sun 3/8

5:12 am-9:50 am

1 stop5h 38m

Colorado Springs

Wed 3/11

1:39 pm-7:29 pm

1 stop4h 50m

$282

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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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 January is another great option to travel to Colorado Springs, with average flight prices from St. Louis averaging around $313.

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

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

4h 32m

Direct flights

None
The fastest flight from St. Louis to Colorado Springs takes 4h 32m
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 4h 32m.

  • 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 $254Free CancellationRating
7.2
11,294 reviews
Search American Airlines flights
United AirlinesPriceFrom $266Free CancellationRating
7.4
9,299 reviews
Search United Airlines flights
SouthwestPriceFrom $281Free CancellationRating
8.0
4,285 reviews
Search Southwest flights
DeltaPriceFrom $281Free CancellationRating
7.9
8,204 reviews
Search Delta flights

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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