St. Louis

$101+ 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 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
COS — STL
Jan 3 — Jan 101
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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 December 4, 2025.

This American Airlines deal was found by Cheapflights users on 12/3. 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.
Thu 12/254:46 pmCOS - STL
1 stop5h 10mAmerican Airlines
Sun 1/45:16 amSTL - COS
1 stop7h 22mAmerican Airlines
Deal found 12/3$357
This American Airlines deal was found by Cheapflights users on 12/3. 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.
Thu 12/254:46 pmCOS - STL
1 stop5h 10mAmerican Airlines
Thu 1/16:44 pmSTL - COS
1 stop6h 03mAmerican Airlines
Deal found 12/3$367
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Thu 12/258:20 amCOS - STL
2 stops8h 34mUnited Airlines
Sun 1/42:45 pmSTL - COS
1 stop6h 01mUnited Airlines
Deal found 12/2$373
This Southwest deal was found by Cheapflights users on 12/3. 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.
Thu 12/2511:50 amCOS - STL
1 stop5h 40mSouthwest
Fri 1/25:00 amSTL - COS
1 stop6h 25mSouthwest
Deal found 12/3$387
This Southwest deal was found by Cheapflights users on 12/2. 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.
Fri 12/266:25 pmCOS - STL
1 stop5h 35mSouthwest
Fri 1/27:05 pmSTL - COS
1 stop6h 10mSouthwest
Deal found 12/2$397
This Southwest deal was found by Cheapflights users on 12/3. 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.
Thu 12/256:35 amCOS - STL
2 stops9h 40mSouthwest
Thu 1/11:45 pmSTL - COS
2 stops7h 40mSouthwest
Deal found 12/3$415
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Fri 12/265:45 amCOS - STL
2 stops7h 41mUnited Airlines
Fri 1/22:45 pmSTL - COS
1 stop7h 26mUnited Airlines
Deal found 12/2$416
This Southwest deal was found by Cheapflights users on 12/3. 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.
Thu 12/2512:15 pmCOS - STL
1 stop6h 50mSouthwest
Sat 1/37:25 pmSTL - COS
1 stop6h 00mSouthwest
Deal found 12/3$417
This United Airlines deal was found by Cheapflights users on 12/2. 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 12/173:33 pmCOS - STL
1 stop4h 24mUnited Airlines
Sun 12/212:45 pmSTL - COS
1 stop6h 01mUnited Airlines
Deal found 12/2$427

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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$181
(American Airlines)

One-way from

$101
(United Airlines)

Popular in

August

Cheapest in

September

Average price

$416
Provider with most accurate pricing for Colorado Springs-Lambert-St Louis flight deals.
Provider most trusted by Cheapflights users for Colorado Springs-Lambert-St Louis flights.
From Colorado Springs to Lambert-St Louis
One-way flight from Colorado Springs to Lambert-St Louis
High demand for flights, 0% potential price rise
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Average for round-trip flights in December 2025

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 December 4, 2025.
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

Sat 1/17

12:00 pm-9:35 pm

1 stop8h 35m

Lambert-St Louis

Tue 1/20

6:00 am-12:23 pm

1 stop7h 23m

$197

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Fri 1/30

3:17 pm-10:59 pm

1 stop6h 42m

Lambert-St Louis

Mon 2/2

11:55 am-5:41 pm

1 stop6h 46m

$234

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Fri 1/30

12:00 pm-11:25 pm

2 stops10h 25m

Lambert-St Louis

Mon 2/2

6:40 am-11:18 am

1 stop5h 38m

$265

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Sat 1/17

7:30 am-3:39 pm

1 stop7h 09m

Lambert-St Louis

Tue 1/20

6:30 am-2:34 pm

2 stops9h 04m

$272

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Fri 1/30

1:25 pm-10:58 pm

2 stops8h 33m

Lambert-St Louis

Mon 2/2

3:11 pm-10:06 pm

2 stops7h 55m

$327

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 12/25

4:46 pm-10:56 pm

1 stop5h 10m

Lambert-St Louis

Sun 1/4

5:16 am-11:38 am

1 stop7h 22m

$357

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 12/25

8:20 am-5:54 pm

2 stops8h 34m

Lambert-St Louis

Sun 1/4

2:45 pm-7:46 pm

1 stop6h 01m

$373

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Sun 2/8

1:25 pm-8:58 pm

1 stop6h 33m

$101

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Sun 2/8

3:07 pm-12:50 pm

2 stops20h 43m

$145

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Colorado Springs-St. Louis flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $126). 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.

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 December 4, 2025.
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.

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Entertainment

7.5

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

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Entertainment

7.5

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

Overall

8.0

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Entertainment

7.5

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 $234, Delta can have you in St. Louis from Colorado Springs in 6h 42m. 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 40% 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 $126). 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
Fairview Heights
Maryland Heights
Collinsville
Swansea
Eureka
Glencoe
St. Peters
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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$233Average$388FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$266Average$391FlexibilityNo cancel feeOn-time69%

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