St. Louis

$43+ Cheap flights from Denver to St. Louis (DEN - 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — STL
Nov 5 — Nov 121
1 adult
Tue 11/5
Tue 11/12
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The best prices from Denver Intl to Lambert-St Louis are usually found in January or May, booked 67 days in advance, depart on a Wednesday or Saturday and return on a Tuesday

Cheap flight deals from Denver to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) 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 October 31, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

September

Cheapest in

January

Round-trip from

$58
(Frontier)

One-way from

$43
(Cheapflightsfares)
Provider with most accurate pricing for Denver Intl-Lambert-St Louis flight deals.
Provider most trusted by Cheapflights users for Denver Intl-Lambert-St Louis flights.
High demand for flights, 12% potential price rise
Best time to find cheap flights, 16% potential price drop
From Denver Intl to Lambert-St Louis
One-way flight from Denver Intl to Lambert-St Louis

Find flight deals from Denver to St. Louis

Cheapest flights from Denver to St. Louis
Explore the most affordable flight options available from Denver to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2024.

This Cheapflightsfares deal was found by Cheapflights users on 10/30. 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.
Wed 11/1310:45 pmDEN - STL
1 stop21h 42mFrontier
Tue 11/195:37 pmSTL - DEN
Nonstop2h 28mFrontier
Deal found 10/30$82
This American Airlines deal was found by Cheapflights users on 10/30. 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.
Fri 11/225:00 amDEN - STL
1 stop4h 46mAmerican Airlines
Sun 11/247:15 amSTL - DEN
1 stop7h 39mAmerican Airlines
Deal found 10/30$158
This Southwest deal was found by Cheapflights users on 10/30. 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.
Sat 12/148:25 amDEN - STL
Nonstop2h 00mSouthwest
Sun 1/197:20 amSTL - DEN
Nonstop2h 35mSouthwest
Deal found 10/30$178
This Delta deal was found by Cheapflights users on 10/30. 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 12/612:55 amDEN - STL
1 stop7h 27mDelta
Sat 12/145:15 pmSTL - DEN
1 stop6h 59mDelta
Deal found 10/30$196
This United Airlines deal was found by Cheapflights users on 10/30. 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 12/181:26 pmDEN - STL
Nonstop2h 03mUnited Airlines
Sat 1/115:30 pmSTL - DEN
1 stop5h 28mUnited Airlines
Deal found 10/30$214

Find flights from Denver to St. Louis within your budget

Customize your flight search to find flights from Denver 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 2,570,725 searches. Data last updated October 31, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Mon 1/27

5:05 am-8:13 am

Nonstop2h 08m

$43

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Tue 12/3

8:20 pm-11:20 pm

Nonstop2h 00m

$66

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Wed 2/19

7:47 am-2:36 pm

1 stop5h 49m

$88

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Thu 11/28

6:00 am-1:55 pm

1 stop6h 55m

$98

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Mon 11/25

5:00 am-10:46 am

1 stop4h 46m

$105

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Thu 12/12

6:40 pm-11:45 am

3 stops40h 05m

$155

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Mon 12/23

8:22 pm-11:59 pm

2 stops26h 37m

$188

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Wed 11/13

10:45 pm-9:27 pm

1 stop21h 42m

Lambert-St Louis

Tue 11/19

5:37 pm-7:05 pm

Nonstop2h 28m

$82

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Fri 11/22

5:00 am-10:46 am

1 stop4h 46m

Lambert-St Louis

Sun 11/24

7:15 am-1:54 pm

1 stop7h 39m

$158

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Tue 1/28

9:40 am-12:48 pm

Nonstop2h 08m

Lambert-St Louis

Fri 1/31

4:36 pm-6:13 pm

Nonstop2h 37m

$177

Flights are sorted by cheapest first

Deals found on 10/31

Showing 1-10 of 12 results
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Compare providers for flights from Denver 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 Denver to St. Louis in October.
ProviderPrice AccuracyTrust Score*Cancellation Policy
ExpediaPrice Accuracy1 starTrust Score*3 starsCancellation PolicyAirline Policy
FlightHubPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
eDreamsPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 starCancellation PolicyAirline Policy
AranGrantPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
CheapOairPrice Accuracy2 starsTrust Score*3 starsCancellation PolicyAirline Policy
Booking.comPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
Kiwi.comPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyNo Information

*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 Denver-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Denver-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Denver-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Denver-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub 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 Denver-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 Denver to St. Louis

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

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

How far ahead should I book a flight from Denver to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Denver to St. Louis. Price data was last updated on October 25, 2024.

The price you pay for your flight from Denver to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 67 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, September is the cheapest month in which you can book a flight from Denver to St. Louis (average of $308). Flying from Denver 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.

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

Find hourly flight availability from Denver 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 October 31, 2024.

It’s optimal to fly from Denver to St. Louis in the evening. By choosing this option you can save up to 48% on the cost of your flight, compared to a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Denver to St. Louis. Price data was last updated on October 27, 2024.

Travelers seeking maximum savings on their Denver to St. Louis flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 31, 2024.
Get a feel of what it's like to fly with United Airlines, Southwest and American Airlines from Denver to St. Louis by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
5,116 reviews

Entertainment

7.7

Boarding

8.3

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Reviews

1 / 10

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

8.1
Very good
5,116 reviews
8.1
Very good
5,116 reviews

Entertainment

7.7

Boarding

8.3

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Reviews

1 / 10

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

8.0
Very good
9,420 reviews
8.1
Very good
5,116 reviews

Entertainment

7.7

Boarding

8.3

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Reviews

1 / 10

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

8.0
Very good
8,835 reviews
8.1
Very good
5,116 reviews

Entertainment

7.7

Boarding

8.3

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Reviews

1 / 10

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

7.4
Good
9,240 reviews
8.1
Very good
5,116 reviews

Entertainment

7.7

Boarding

8.3

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Reviews

1 / 10

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

7.2
Good
10,000 reviews
8.1
Very good
5,116 reviews

Entertainment

7.7

Boarding

8.3

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

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 Denver 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 airports do I use to fly from Denver to St. Louis?

    To fly from Denver to St. Louis, you need to book a flight from Denver Intl (DEN) to Lambert-St Louis (STL). Nonstop flights to Lambert-St Louis from Denver Intl take 2h 00m on average. When it comes time to book airfare, you have a few options: there are 3 outbound flights from Denver Intl to Lambert-St Louis offered by 4 different airlines.

  • Can I find flights from Denver to St. Louis for under $100 on Cheapflights?

    Yes, there are multiple flights from Denver to St. Louis for under $100. The cheapest flight booked recently is on Frontier for just $58, but on average you can expect to pay $153.

  • Are there nonstop flights from Denver to St. Louis for under $100 on Cheapflights?

    Cheapflights has at least 3 direct flights from Denver to St. Louis under $100. A good price for a nonstop flight from Denver to St. Louis is less than $137.

  • Are there last-minute flights available from Denver to St. Louis for under $100?

    There are currently 6+ open flights from Denver to St. Louis within the next 7 days for less than $100.

  • What days are nonstop flights available from Denver to St. Louis?

    Nonstop flights are available for this route on the following days: Sunday, Monday, Tuesday, Thursday, Friday, Saturday.

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

  • How many flights depart from Denver to St. Louis on average per day?

    On average 21 flights depart from Denver to St. Louis per day.
    Morning (6am - Noon) - 24% of flight departures
    Afternoon (Noon - 6pm) - 38% of flight departures
    Evening (6pm - Midnight) - 38% of flight departures

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

    A quick flight from Denver to St. Louis can take about 2h 08m. Frontier provides one of the quickest options available for as low as $58. The distance from Denver to St. Louis is about 772 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Our cheapest airline available from Denver to St. Louis is Frontier. Our recent data shows that you can find tickets from as low as $58 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $158 and $177 round-trip. Frontier is currently priced 67% below the average price you’ll pay for this route.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $43. Users have also found prices from $66 and $98 on Southwest and Delta, respectively.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Denver to St. Louis on time: Southwest (90%), Air Canada (83%), United Airlines (83%).

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

    While on average a flight from Denver to St. Louis is generally $213, our data shows the cheapest flight currently is $57. When looking at the most popular route, (Denver Intl - Lambert-St Louis), you can expect to pay $67 for that flight.

  • What does DEN to STL mean?

    Denver Intl Airport is DEN and Lambert-St Louis Airport is STL. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

  • Can I find deals for flights from Denver to St. Louis that include extra baggage allowance?

    The amount of baggage you can bring on your Denver to St. Louis flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Denver to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Denver to St. Louis flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Denver 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.

  • Can I find deals for flights from Denver to St. Louis that allow pets onboard?

    Many airlines flying from Denver to St. Louis offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Denver to St. Louis?

    Yes, you can often find last-minute deals on Denver to St. Louis flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Denver to St. Louis flight deals updated?

    The Denver to St. Louis flight deals you see on this page were last updated on 10/30.

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

    Currently, September is the cheapest month in which you can book a flight from Denver to St. Louis (average of $308). Flying from Denver 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 4 airlines flying from Denver to St. Louis

Discover the top 4 airlines that operate flights from Denver 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 2,570,725 searches. Data last updated October 31, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$48Average$137FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$141Average$278FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$148Average$315FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$175Average$316FlexibilityNo cancel feeOn-time71%
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