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St. Louis

$39+ Cheap flights from Colorado to St. Louis (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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — STL
Nov 24 — Dec 11
Sun 11/24
Sun 12/1
1 adult, Economy
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Cheap flight deals from Colorado to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Colorado (USCO) 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 November 19, 2024.

Find flight deals from Colorado to St. Louis

Cheapest flights from Colorado to St. Louis
Explore the most affordable flight options available from Colorado to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 19, 2024.

This Cheapflightsfares deal was found by Cheapflights users on 11/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/135:05 amDEN - STL
Nonstop2h 08mFrontier
Mon 12/166:46 pmSTL - DEN
Nonstop2h 36mFrontier
Deal found 11/18$77
This Southwest deal was found by Cheapflights users on 11/19. 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.
Thu 12/196:10 amDEN - STL
Nonstop2h 10mSouthwest
Tue 1/78:35 pmSTL - DEN
Nonstop2h 30mSouthwest
Deal found 11/19$188
This Delta deal was found by Cheapflights users on 11/18. 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 12/1011:10 amDEN - STL
1 stop5h 30mDelta
Sat 12/146:00 amSTL - DEN
1 stop5h 24mDelta
Deal found 11/18$216
This American Airlines deal was found by Cheapflights users on 11/18. 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 12/195:00 amDEN - STL
1 stop4h 50mAmerican Airlines
Tue 12/245:45 amSTL - DEN
1 stop5h 51mAmerican Airlines
Deal found 11/18$236
This United Airlines deal was found by Cheapflights users on 11/19. 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 12/49:40 amDEN - STL
Nonstop2h 03mUnited Airlines
Sun 12/84:31 pmSTL - DEN
Nonstop2h 31mUnited Airlines
Deal found 11/19$257
This United Airlines deal was found by Cheapflights users on 11/18. 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 12/113:19 pmCOS - STL
1 stop4h 22mUnited Airlines
Mon 12/164:31 pmSTL - COS
1 stop6h 26mUnited Airlines
Deal found 11/18$336
This Southwest deal was found by Cheapflights users on 11/18. 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.
Mon 12/161:00 pmCOS - STL
1 stop6h 45mSouthwest
Mon 12/237:10 pmSTL - COS
1 stop5h 30mSouthwest
Deal found 11/18$346
This American Airlines deal was found by Cheapflights users on 11/18. 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.
Mon 12/25:00 amCOS - STL
1 stop4h 46mAmerican Airlines
Mon 12/91:36 pmSTL - COS
1 stop5h 20mAmerican Airlines
Deal found 11/18$366
This United Airlines deal was found by Cheapflights users on 11/19. 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.
Sat 12/1411:30 amGJT - STL
1 stop3h 59mUnited Airlines
Thu 12/198:35 amSTL - GJT
1 stop7h 12mUnited Airlines
Deal found 11/19$398
This Mytrip deal was found by Cheapflights users on 11/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/165:40 pmDEN - STL
3 stops21h 45mMultiple Airlines
Mon 12/2312:15 pmSTL - DEN
3 stops30h 02mMultiple Airlines
Deal found 11/18$399
This American Airlines deal was found by Cheapflights users on 11/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/145:00 amGJT - STL
1 stop7h 33mAmerican Airlines
Thu 12/1911:51 amSTL - GJT
2 stops11h 37mAmerican Airlines
Deal found 11/19$413
This United Airlines deal was found by Cheapflights users on 11/17. 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 12/193:26 pmDRO - STL
1 stop5h 50mUnited Airlines
Tue 12/314:43 pmSTL - DRO
1 stop6h 44mUnited Airlines
Deal found 11/17$458

Find flights from Colorado to St. Louis within your budget

Customize your flight search to find flights from Colorado 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 2,659,078 searches. Data last updated November 19, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Fri 12/13

5:05 am-8:13 am

Nonstop2h 08m

Lambert-St Louis

Mon 12/16

6:46 pm-8:22 pm

Nonstop2h 36m

$77

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Thu 12/19

6:10 am-9:20 am

Nonstop2h 10m

Lambert-St Louis

Tue 1/7

8:35 pm-10:05 pm

Nonstop2h 30m

$188

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Mon 1/13

3:35 pm-11:37 pm

1 stop7h 02m

Lambert-St Louis

Wed 1/15

7:40 am-3:20 pm

1 stop8h 40m

$206

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Sat 3/1

1:30 pm-4:33 pm

Nonstop2h 03m

Lambert-St Louis

Mon 3/3

5:36 pm-9:58 pm

1 stop5h 22m

$207

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Thu 12/19

5:00 am-10:50 am

1 stop4h 50m

Lambert-St Louis

Tue 12/24

5:45 am-10:36 am

1 stop5h 51m

$236

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Mon 1/13

10:45 am-4:28 pm

1 stop4h 43m

Lambert-St Louis

Tue 1/21

8:27 am-4:33 pm

1 stop9h 06m

$301

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 1/15

11:50 am-10:05 pm

1 stop9h 15m

Lambert-St Louis

Mon 1/20

5:55 am-12:00 pm

1 stop7h 05m

$314

Colorado SpringsSt. Louis

COS - STL

COSSTL

Colorado Springs

Wed 1/15

4:43 pm-10:36 pm

1 stop4h 53m

Lambert-St Louis

Mon 1/20

7:00 am-12:09 pm

1 stop6h 09m

$326

Grand JunctionSt. Louis

GJT - STL

GJTSTL

Grand Junction Regnl

Sat 12/14

11:30 am-4:29 pm

1 stop3h 59m

Lambert-St Louis

Thu 12/19

8:35 am-2:47 pm

1 stop7h 12m

$398

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Mon 12/16

5:40 pm-4:25 pm

3 stops21h 45m

Lambert-St Louis

Mon 12/23

12:15 pm-5:17 pm

3 stops30h 02m

$399

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 29 results
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Best time to book a flight from Colorado to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Colorado 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.

Travel insights for flights from Colorado to St. Louis

Get recent, data-driven insights about flights from Colorado to St. Louis including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from Colorado to St. Louis (average of $308). Flying from Colorado to St. Louis in March is currently the most expensive (average of $357). 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.

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

Find hourly flight availability from Colorado to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 19, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to St. Louis as you normally would.

Weekly flight availability from Colorado to St. Louis

Explore weekly flight availability from Colorado to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated November 19, 2024.

The most flights from USCO to STL are scheduled on a Monday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

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.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

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).

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 November 19, 2024.
Read reviews from past customers who have flown Frontier, Southwest and Delta from Colorado to St. Louis. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,015 reviews

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,015 reviews
Southwest
8.1
Very good
5,015 reviews

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,460 reviews
Southwest
8.1
Very good
5,015 reviews

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,765 reviews
Southwest
8.1
Very good
5,015 reviews

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,173 reviews
Southwest
8.1
Very good
5,015 reviews

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,015 reviews

Comfort

8.1

Entertainment

7.7

Food

7.2

Crew

8.7

Overall

8.1

Boarding

8.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

Find useful and relevant information for your journey from Colorado 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 airport do you fly into for flights to St. Louis from Colorado?

    For a flight from Colorado to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.

  • How popular is this Colorado to St. Louis flight route?

    This flight path from Colorado to Lambert-St Louis was viewed by 24 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from Colorado to St. Louis one-way?

    The cheapest airlines for a one-way flight from Colorado to St. Louis are Frontier ($39), United Airlines ($79), and Delta ($108).

  • What are the most popular routes from Colorado to St. Louis?

    When deciding which route to take from Colorado to St. Louis consider Denver Intl - Lambert-St Louis, Colorado Springs - Lambert-St Louis or Durango La Plata County - Lambert-St Louis as they are the most popular.

  • What are the most reliable airlines from Colorado to St. Louis?

    The top 3 most reliable airlines when flying from Colorado to St. Louis are Air Canada (87%), United Airlines (87%) and Frontier (86%).

  • What are the cheapest flights from Colorado to St. Louis?

    Looking for the cheapest flight from Colorado to St. Louis? While on average our users pay $199, our data indicates the cheapest price to be $51. The most popular route (Denver Intl - Lambert-St Louis), is priced around $134.

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

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

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

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

    Yes. Cheapflights offers flight deals from Colorado 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 to St. Louis?

    Currently, September is the cheapest month in which you can book a flight from Colorado to St. Louis (average of $308). Flying from Colorado to St. Louis in March is currently the most expensive (average of $357). 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.

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Top 4 airlines flying from Colorado to St. Louis

Discover the top 4 airlines that operate flights from Colorado 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 2,659,078 searches. Data last updated November 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$51Average$144FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$140Average$317FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$149Average$472FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$212Average$391FlexibilityNo cancel feeOn-time71%
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