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 $217 on this airline. Additional options worth looking into are Delta and American Airlines, starting at $234 and $248 round-trip. Southwest is currently priced 42% below the average price you’ll pay for this route.

What is the cheapest day to fly from Colorado Springs to St. Louis?

Travelers seeking maximum savings on their Colorado Springs to St. Louis flight should consider departing on Friday afternoons when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What are the most popular airlines that fly from Colorado Springs to St. Louis?

American Airlines, United Airlines and Southwest are the most popular airlines when flying from Colorado Springs to St. Louis.

What is the cheapest day to fly round-trip from Colorado Springs to St. Louis?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 77% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Colorado Springs to St. Louis?

To save up to 73% on this flight, we recommend booking at least 21 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Colorado Springs to St. Louis from $160 1-2 weeks out and tickets from $291 for flights departing within the next 72 hours.

What is the cheapest month to fly from Colorado Springs to St. Louis?

January is one of the best times of the year to fly to St. Louis from Colorado Springs. Prices for January average $215 per person but you can even find prices for as low as $44. The most expensive prices can be found in the month of June. Opting for a January flight can save you 29% on your journey compared to booking in June

What is the cheapest time of day to fly from COS to STL?

It’s typically best to fly out from Colorado Springs to St. Louis in the morning. Doing so could potentially save you 18% on the flight price compared to flying in the afternoon, which is usually more expensive.

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.

$164+ Flights from Colorado Springs to St. Louis

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Cheap flight deals from Colorado Springs to St. Louis

Round-trip from	$217 (Southwest)
One-way from	$164 (Southwest)
Popular in	March
Cheapest in	October
Average price	$426

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. 5% potential increase in price ($22 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find 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 July 3, 2025.

Tue 8/266:45 amCOS - STL

1 stop3h 45mSouthwest

Thu 8/285:25 amSTL - COS

1 stop4h 45mSouthwest

Deal found 7/2

$217

Mon 8/115:55 pmCOS - STL

1 stop5h 43mDelta

Sat 8/163:36 pmSTL - COS

1 stop6h 05mDelta

Deal found 7/2

$234

Wed 8/65:24 pmCOS - STL

1 stop4h 50mAmerican Airlines

Thu 8/710:08 amSTL - COS

1 stop7h 09mAmerican Airlines

Deal found 7/3

$248

Tue 7/156:35 pmCOS - STL

1 stop4h 24mUnited Airlines

Tue 9/26:35 amSTL - COS

1 stop5h 21mUnited Airlines

Deal found 7/1

$302

Best flights from Colorado Springs to St. Louis
Discover carefully curated flight deals from Colorado Springs to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2025.

Tue 8/266:45 amCOS - STL

1 stop3h 45mSouthwest

Thu 8/285:25 amSTL - COS

1 stop4h 45mSouthwest

Deal found 7/2

$217

Mon 8/115:55 pmCOS - STL

1 stop5h 43mDelta

Sat 8/163:36 pmSTL - COS

1 stop6h 05mDelta

Deal found 7/2

$234

Wed 8/65:24 pmCOS - STL

1 stop4h 50mAmerican Airlines

Thu 8/710:08 amSTL - COS

1 stop7h 09mAmerican Airlines

Deal found 7/3

$248

Tue 7/156:35 pmCOS - STL

1 stop4h 24mUnited Airlines

Tue 9/26:35 amSTL - COS

1 stop5h 21mUnited Airlines

Deal found 7/1

$302

Last-minute flights from Colorado Springs to St. Louis
Discover last-minute flight deals from Colorado Springs to St. Louis. Data last updated July 3, 2025 and is based on user searches.

Thu 7/1010:50 amCOS - STL

1 stop8h 50mSouthwest

Sun 7/137:25 pmSTL - COS

1 stop5h 05mSouthwest

Deal found 7/1

$487

Thu 7/1010:54 amCOS - STL

2 stops11h 59mDelta

Sun 7/131:29 pmSTL - COS

2 stops9h 44mDelta

Deal found 7/2

$1,339

Fri 7/1112:04 pmCOS - STL

1 stop7h 15mAmerican Airlines

Fri 7/186:00 amSTL - COS

1 stop6h 29mAmerican Airlines

Deal found 6/30

$437

Fri 7/116:00 amCOS - STL

2 stops8h 47mUnited Airlines

Fri 7/185:30 pmSTL - COS

2 stops7h 22mUnited Airlines

Deal found 6/30

$517

Tue 7/156:35 pmCOS - STL

1 stop4h 24mUnited Airlines

Tue 9/26:35 amSTL - COS

1 stop5h 21mUnited Airlines

Deal found 7/1

$302

Wed 8/65:24 pmCOS - STL

1 stop4h 50mAmerican Airlines

Thu 8/710:08 amSTL - COS

1 stop7h 09mAmerican Airlines

Deal found 7/3

$248

Mon 8/115:55 pmCOS - STL

1 stop5h 43mDelta

Sat 8/163:36 pmSTL - COS

1 stop6h 05mDelta

Deal found 7/2

$234

Tue 8/266:45 amCOS - STL

1 stop3h 45mSouthwest

Thu 8/285:25 amSTL - COS

1 stop4h 45mSouthwest

Deal found 7/2

$217

One-way flights from Colorado Springs to St. Louis
Search for one-way flight options from Colorado Springs to St. Louis. Find affordable one-way fares based on user searches. Data last updated July 3, 2025.

Sun 8/37:00 pmCOS - STL

1 stop4h 20mSouthwest

Deal found 6/30

$164

Thu 7/1010:49 amCOS - STL

1 stop6h 44mAmerican Airlines

Deal found 7/2

$244

Cheapflights Fare Finder

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

Tue 8/26

6:45 am-11:30 am

1 stop3h 45m

Lambert-St Louis

Thu 8/28

5:25 am-9:10 am

1 stop4h 45m

$217

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Mon 8/11

5:55 pm-12:38 am

1 stop5h 43m

Lambert-St Louis

Sat 8/16

3:36 pm-8:41 pm

1 stop6h 05m

$234

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 8/6

5:24 pm-11:14 pm

1 stop4h 50m

Lambert-St Louis

Thu 8/7

10:08 am-4:17 pm

1 stop7h 09m

$248

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Tue 7/15

6:35 pm-11:59 pm

1 stop4h 24m

Lambert-St Louis

Tue 9/2

6:35 am-10:56 am

1 stop5h 21m

$302

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Sun 8/3

7:00 pm-12:20 am

1 stop4h 20m

$164

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Thu 7/10

10:49 am-6:33 pm

1 stop6h 44m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

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, August is the cheapest month in which you can book a flight from Colorado Springs to St. Louis (average of $311). Flying from Colorado Springs to St. Louis in March is currently the most expensive (average of $356). 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

Read through reviews of airlines operating flights from Colorado Springs to St. Louis, such as Southwest, Delta, 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

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Southwest

8.0

Very good

4,266 reviews

Southwest

8.0

Very good

4,266 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Delta

8.0

Very good

7,982 reviews

Southwest

8.0

Very good

4,266 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

United Airlines

7.4

Good

8,861 reviews

Southwest

8.0

Very good

4,266 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,266 reviews

Reviews

1 / 20

8.0

Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

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 $217 on this airline. Additional options worth looking into are Delta and American Airlines, starting at $234 and $248 round-trip. Southwest is currently priced 42% 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, August is the cheapest month in which you can book a flight from Colorado Springs to St. Louis (average of $311). Flying from Colorado Springs to St. Louis in March is currently the most expensive (average of $356). 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

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Top 3 airlines flying from Colorado Springs to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Southwest	Cheapest$260	Average$371	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$266	Average$336	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$266	Average$355	FlexibilityNo cancel fee	On-time69%

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$164+ 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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Colorado Springs to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Colorado Springs to St. Louis

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Colorado Springs to St. Louis

Cheapest flights from Colorado Springs to St. LouisExplore 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 July 3, 2025.

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 July 3, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Colorado Springs to St. Louis that are best for you.

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.

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?

Reviews of airlines servicing St. Louis

Read through reviews of airlines operating flights from Colorado Springs to St. Louis, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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.

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

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

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

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

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

Traveling to a place near Colorado Springs?

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Alternative routes for Colorado Springs to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Colorado Springs to St. Louis

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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 July 3, 2025.