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$119+ Cheap flights from Colorado Springs to St. Louis (COS - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
COS — STL
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap flight deals from Colorado Springs to St. Louis

Cheapest flights from Colorado Springs to St. Louis
Explore the most affordable flight options available from Colorado Springs to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1012:03 pm
COS
-
STL
1 stop8h 35m
Delta
Wed 2/116:40 am
STL
-
COS
1 stop5h 38m
Delta
Deal found 1/20$237
This American Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/2812:20 pm
COS
-
STL
1 stop7h 51m
American Airlines
Tue 3/319:35 am
STL
-
COS
1 stop7h 25m
American Airlines
Deal found 1/20$265
This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2112:00 pm
COS
-
STL
1 stop8h 38m
Delta
Mon 2/237:10 am
STL
-
COS
1 stop6h 15m
Delta
Deal found 1/20$277
This Southwest deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/107:20 am
COS
-
STL
2 stops8h 30m
Southwest
Wed 2/116:00 am
STL
-
COS
2 stops8h 05m
Southwest
Deal found 1/20$278
This Delta deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/67:55 am
COS
-
STL
1 stop8h 47m
Delta
Mon 3/96:00 am
STL
-
COS
1 stop7h 31m
Delta
Deal found 1/21$285
This United Airlines deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/183:40 pm
COS
-
STL
1 stop3h 46m
United Airlines
Wed 2/256:00 pm
STL
-
COS
1 stop5h 02m
United Airlines
Deal found 1/19$293
This Southwest deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/114:35 pm
COS
-
STL
1 stop4h 30m
Southwest
Thu 2/127:30 pm
STL
-
COS
1 stop4h 30m
Southwest
Deal found 1/20$297
This American Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/154:49 pm
COS
-
STL
1 stop5h 09m
American Airlines
Tue 2/174:13 pm
STL
-
COS
1 stop6h 57m
American Airlines
Deal found 1/20$301
This Southwest deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/187:20 am
COS
-
STL
2 stops8h 10m
Southwest
Wed 2/2511:55 am
STL
-
COS
2 stops8h 25m
Southwest
Deal found 1/19$304

Find flight deals from Colorado Springs to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Colorado Springs (COS) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$237
(Delta)

One-way from

$119
(Delta)

Popular in

January

Cheapest in

November

Average price

$623
Provider with most accurate pricing for Colorado Springs-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Colorado Springs-Lambert-St Louis flights.
Search Deals
From Colorado Springs to Lambert-St Louis
Search Deals
One-way flight from Colorado Springs to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($79 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2026.
Use the filters below to find and compare flights from Colorado Springs to St. Louis that are best for you.

Fly from

Colorado Springs

Fly to

St. Louis

Route

Depart

Return

Price

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Tue 2/10

12:03 pm-9:38 pm

1 stop8h 35m

Lambert-St Louis

Wed 2/11

6:40 am-11:18 am

1 stop5h 38m

$237

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Sat 2/21

12:00 pm-9:38 pm

1 stop8h 38m

Lambert-St Louis

Mon 2/23

7:10 am-12:25 pm

1 stop6h 15m

$277

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Tue 2/10

7:20 am-4:50 pm

2 stops8h 30m

Lambert-St Louis

Wed 2/11

6:00 am-1:05 pm

2 stops8h 05m

$278

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Fri 3/6

7:55 am-5:42 pm

1 stop8h 47m

Lambert-St Louis

Mon 3/9

6:00 am-12:31 pm

1 stop7h 31m

$285

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 3/5

1:22 pm-8:41 pm

1 stop6h 19m

Lambert-St Louis

Mon 3/9

6:00 am-12:31 pm

1 stop7h 31m

$293

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 2/18

1:40 pm-9:05 pm

2 stops6h 25m

Lambert-St Louis

Wed 2/25

6:00 am-11:33 am

1 stop6h 33m

$298

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 3/5

1:32 pm-9:42 pm

2 stops7h 10m

Lambert-St Louis

Mon 3/9

5:15 am-8:49 am

1 stop4h 34m

$298

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 2/11

1:45 pm-9:55 pm

2 stops7h 10m

Lambert-St Louis

Thu 2/12

7:30 pm-11:00 pm

1 stop4h 30m

$302

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Fri 3/6

4:45 pm-12:05 am

1 stop6h 20m

Lambert-St Louis

Mon 3/9

11:25 am-9:50 pm

2 stops11h 25m

$316

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 3/5

6:35 am-2:40 pm

2 stops7h 05m

Lambert-St Louis

Mon 3/9

2:15 pm-9:45 pm

2 stops8h 30m

$328

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 19 results
1
2

Compare providers for flights from Colorado Springs to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Colorado Springs to St. Louis in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Colorado Springs-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Colorado Springs-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Colorado Springs-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Colorado Springs-St. Louis flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Colorado Springs-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Colorado Springs to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Colorado Springs with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Colorado Springs to St. Louis

What is the cheapest month to book a flight from Colorado Springs to St. Louis?

Currently, February is the cheapest month in which you can book a flight from Colorado Springs to St. Louis (average of $37). Flying from Colorado Springs to St. Louis in July is currently the most expensive (average of $129). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Colorado Springs to St. Louis?

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated January 21, 2026.
Read through reviews of airlines operating flights from Colorado Springs to St. Louis, such as Southwest and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,266 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,266 reviews
Southwest
8.0
Very good
4,266 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,190 reviews
Southwest
8.0
Very good
4,266 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Colorado Springs to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Colorado Springs to St. Louis?

    For as low as $278, Delta can have you in St. Louis from Colorado Springs in 8h 30m. There are 771 mi between Colorado Springs and St. Louis. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Colorado Springs to St. Louis round-trip?

    Our cheapest airline available from Colorado Springs to St. Louis is Southwest. Our recent data shows that you can find tickets from as low as $233 on this airline. An additional option worth looking into is United Airlines, starting at $266. Southwest is currently priced 44% below the average price you’ll pay for this route.

  • Can I find deals for flights from Colorado Springs to St. Louis that include hotel bookings?

    Yes. In addition to deals on Colorado Springs to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Colorado Springs to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Colorado Springs to St. Louis.

  • Can I find deals for business class flights from Colorado Springs to St. Louis?

    Yes. Cheapflights offers flight deals from Colorado Springs to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Colorado Springs to St. Louis?

    Currently, February is the cheapest month in which you can book a flight from Colorado Springs to St. Louis (average of $37). Flying from Colorado Springs to St. Louis in July is currently the most expensive (average of $129). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Colorado Springs to St. Louis

Discover the top 2 airlines that operate flights from Colorado Springs to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$233Average$389FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$266Average$380FlexibilityNo cancel feeOn-time69%

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