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$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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — STL
Jul 30 — Aug 61
From?
To?
Tue 7/30
Tue 8/6
1 adult, Economy
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The best prices from Denver Intl to Lambert-St Louis are usually found in September or August, booked 75 days in advance, depart on a Wednesday or Thursday 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 July 25, 2024.

Popular in

December

Cheapest in

September

Round-trip from

$55

One-way from

$43
(Cheapflightsfares)
High demand for flights, 18% potential price rise
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Best time to find cheap flights, 22% potential price drop
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From Denver Intl to Lambert-St Louis
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One-way flight from Denver Intl to Lambert-St Louis
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What is the cheapest day to fly round-trip from Denver to St. Louis?

Users have found that flying from Denver to St. Louis on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

Users have found that booking a flight from Denver to St. Louis at least 49 days early can save you up to 76% on average compared to booking a flight this week. If booking 49 days before your flight isn’t an option for you, users have found flights from Denver to St. Louis for as little as $120 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $313 for flights departing within the next 3 days.

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

Flights from Denver to St. Louis lean towards being more expensive in December. Prices are generally better when you fly from Denver to St. Louis in September, with the cheapest ticket starting at $45.

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

It’s optimal to fly from Denver to St. Louis in the morning. By choosing this option you can save up to 40% on the cost of your flight, compared to a flight at noon.

Cheap Denver to St. Louis flights in July & August 2024

Find cheap flight options from Denver to St. Louis specifically for the months of July and August 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,752,877 searches. Prices were last updated on July 25, 2024.
These are some of the best deals we've found on flights to St. Louis in 2024 at this time. Check back regularly for other flight deals.
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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.
Sat 8/243:37 pmDEN - STL
Nonstop2h 11mFrontier
Tue 8/277:48 pmSTL - DEN
Nonstop2h 22mFrontier
Deal found 7/25$57
This Frontier deal was found by Cheapflights users on 7/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/153:37 pmDEN - STL
Nonstop2h 11mFrontier
Mon 8/199:24 pmSTL - DEN
Nonstop2h 24mFrontier
Deal found 7/24$58
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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 8/233:37 pmDEN - STL
Nonstop2h 11mFrontier
Mon 8/269:24 pmSTL - DEN
Nonstop2h 24mFrontier
Deal found 7/25$71
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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 8/233:37 pmDEN - STL
Nonstop2h 11mFrontier
Wed 8/287:48 pmSTL - DEN
Nonstop2h 22mFrontier
Deal found 7/25$72
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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.
Thu 8/293:37 pmDEN - STL
Nonstop2h 11mFrontier
Tue 9/37:48 pmSTL - DEN
Nonstop2h 22mFrontier
Deal found 7/25$77
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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 8/303:37 pmDEN - STL
Nonstop2h 11mFrontier
Tue 9/37:48 pmSTL - DEN
Nonstop2h 22mFrontier
Deal found 7/25$87
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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 8/163:37 pmDEN - STL
Nonstop2h 11mFrontier
Mon 8/199:24 pmSTL - DEN
Nonstop2h 24mFrontier
Deal found 7/25$92
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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.
Sat 8/243:37 pmDEN - STL
Nonstop2h 11mFrontier
Tue 8/279:36 pmSTL - DEN
1 stop7h 25mFrontier
Deal found 7/25$101
This mytrip.com deal was found by Cheapflights users on 7/24. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/213:37 pmDEN - STL
Nonstop2h 11mFrontier
Wed 8/2810:22 pmSTL - DEN
1 stop6h 39mFrontier
Deal found 7/24$102

Denver to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Denver and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,752,877 searches. Data last updated July 25, 2024.
These are some of the best deals we've found on flights to St. Louis in 2024 at this time. Check back regularly for other flight deals.
This Cheapflightsfares deal was found by Cheapflights users on 7/23. 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.
Thu 8/223:37 pmDEN - STL
Nonstop2h 11mFrontier
Tue 8/277:48 pmSTL - DEN
Nonstop2h 22mFrontier
Deal found 7/23$56
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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.
Sat 8/243:37 pmDEN - STL
Nonstop2h 11mFrontier
Tue 8/277:48 pmSTL - DEN
Nonstop2h 22mFrontier
Deal found 7/25$57
This Frontier deal was found by Cheapflights users on 7/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/153:37 pmDEN - STL
Nonstop2h 11mFrontier
Mon 8/199:24 pmSTL - DEN
Nonstop2h 24mFrontier
Deal found 7/24$58
This Frontier deal was found by Cheapflights users on 7/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/88:44 amDEN - STL
Nonstop2h 06mFrontier
Tue 10/810:32 pmSTL - DEN
Nonstop2h 29mFrontier
Deal found 7/24$59
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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 8/233:37 pmDEN - STL
Nonstop2h 11mFrontier
Mon 8/269:24 pmSTL - DEN
Nonstop2h 24mFrontier
Deal found 7/25$71
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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 8/233:37 pmDEN - STL
Nonstop2h 11mFrontier
Wed 8/287:48 pmSTL - DEN
Nonstop2h 22mFrontier
Deal found 7/25$72
This Frontier deal was found by Cheapflights users on 7/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/278:28 pmDEN - STL
Nonstop2h 05mFrontier
Mon 9/303:53 pmSTL - DEN
Nonstop2h 24mFrontier
Deal found 7/24$73
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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.
Thu 8/293:37 pmDEN - STL
Nonstop2h 11mFrontier
Tue 9/37:48 pmSTL - DEN
Nonstop2h 22mFrontier
Deal found 7/25$77
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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 8/303:37 pmDEN - STL
Nonstop2h 11mFrontier
Tue 9/37:48 pmSTL - DEN
Nonstop2h 22mFrontier
Deal found 7/25$87

Denver to St. Louis flights leaving soon

Find last-minute flight options from Denver to St. Louis for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,752,877 searches. Data last updated July 25, 2024.
Have a look at some of the last-minute flights available departing from Denver to St. Louis. It's wise to confirm all flight details are correct before booking.
This Cheapflightsfares deal was found by Cheapflights users on 7/24. 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 7/316:15 amDEN - STL
Nonstop2h 10mFrontier
Sat 8/37:51 pmSTL - DEN
Nonstop2h 22mFrontier
Deal found 7/24$111
This Cheapflightsfares deal was found by Cheapflights users on 7/24. 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 7/316:15 amDEN - STL
Nonstop2h 10mFrontier
Thu 8/18:57 pmSTL - DEN
Nonstop2h 23mFrontier
Deal found 7/24$112
This Cheapflightsfares deal was found by Cheapflights users on 7/23. 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 7/316:15 amDEN - STL
Nonstop2h 10mFrontier
Thu 8/19:44 pmSTL - DEN
1 stop7h 16mFrontier
Deal found 7/23$150
This Cheapflightsfares deal was found by Cheapflights users on 7/24. 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 7/316:15 amDEN - STL
Nonstop2h 10mFrontier
Thu 8/19:44 pmSTL - DEN
1 stop7h 16mFrontier
Deal found 7/24$151
This Cheapflightsfares deal was found by Cheapflights users on 7/23. 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.
Tue 7/3011:41 amDEN - STL
Nonstop2h 06mFrontier
Thu 8/18:57 pmSTL - DEN
Nonstop2h 23mFrontier
Deal found 7/23$155
This Cheapflightsfares deal was found by Cheapflights users on 7/24. 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.
Tue 7/3011:41 amDEN - STL
Nonstop2h 06mFrontier
Mon 8/57:51 pmSTL - DEN
Nonstop2h 22mFrontier
Deal found 7/24$156
This Frontier deal was found by Cheapflights users on 7/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/3011:41 amDEN - STL
Nonstop2h 06mFrontier
Thu 8/18:57 pmSTL - DEN
Nonstop2h 23mFrontier
Deal found 7/24$158
This Cheapflightsfares deal was found by Cheapflights users on 7/24. 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.
Thu 8/14:45 pmDEN - STL
Nonstop2h 12mFrontier
Mon 8/57:51 pmSTL - DEN
Nonstop2h 22mFrontier
Deal found 7/24$166
This Cheapflightsfares deal was found by Cheapflights users on 7/23. 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.
Tue 7/3011:41 amDEN - STL
Nonstop2h 06mFrontier
Thu 8/19:44 pmSTL - DEN
1 stop27h 06mFrontier
Deal found 7/23$194

One-way flights to St. Louis from Denver

Search for one-way flight options from Denver to St. Louis. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,752,877 searches. Data last updated July 25, 2024.
Some of the best available deals we've found on one-way flights from Denver to St. Louis. Users in need of a round-trip flight from Denver to St. Louis instead should update the search form at the top of page.
This Cheapflightsfares deal was found by Cheapflights users on 7/24. 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 8/233:37 pmDEN - STL
Nonstop2h 11mFrontier
Deal found 7/24$43
This Frontier deal was found by Cheapflights users on 7/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/253:37 pmDEN - STL
Nonstop2h 11mFrontier
Deal found 7/24$44
This mytrip.com deal was found by Cheapflights users on 7/23. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/278:28 pmDEN - STL
Nonstop2h 05mFrontier
Deal found 7/23$45
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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.
Tue 8/133:37 pmDEN - STL
Nonstop2h 11mFrontier
Deal found 7/25$53
This Cheapflightsfares deal was found by Cheapflights users on 7/24. 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 8/163:37 pmDEN - STL
Nonstop2h 11mFrontier
Deal found 7/24$63
This Frontier deal was found by Cheapflights users on 7/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/256:26 amDEN - STL
Nonstop2h 11mFrontier
Deal found 7/23$64
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/288:28 pmDEN - STL
Nonstop2h 05mFrontier
Deal found 7/25$65
This FlightNetwork deal was found by Cheapflights users on 7/24. 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 FlightNetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2010:09 amDEN - STL
1 stop9h 27mFrontier
Deal found 7/24$72
This mytrip.com deal was found by Cheapflights users on 7/24. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2710:09 amDEN - STL
1 stop9h 27mFrontier
Deal found 7/24$73

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 2,752,877 searches. Data last updated July 25, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$55 - $202

Route

Depart

Return

Price

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Thu 8/15

Nonstop2h 11m

Lambert-St Louis

Mon 8/19

1 stop28h 54m

$55

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Thu 8/22

Nonstop2h 11m

Lambert-St Louis

Tue 8/27

Nonstop2h 22m

$56

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Sat 8/24

Nonstop2h 11m

Lambert-St Louis

Tue 8/27

Nonstop2h 22m

$57

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Thu 8/15

Nonstop2h 11m

Lambert-St Louis

Mon 8/19

Nonstop2h 24m

$58

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Tue 10/8

Nonstop2h 06m

Lambert-St Louis

Tue 10/8

Nonstop2h 29m

$59

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Mon 9/9

1 stop7h 01m

Lambert-St Louis

Sat 9/14

1 stop7h 09m

$176

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Tue 9/10

Nonstop2h 08m

Lambert-St Louis

Sat 9/14

1 stop5h 57m

$187

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Tue 10/8

1 stop6h 20m

Lambert-St Louis

Tue 10/8

1 stop7h 17m

$192

Denver IntlLambert-St Louis

DEN - STL

DENSTL

Denver Intl

Fri 10/18

Nonstop2h 11m

Lambert-St Louis

Sun 10/20

1 stop14h 35m

$202

Flights are sorted by cheapest first

Deals found on 7/24

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 July 23, 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 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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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 July 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Denver to St. Louis flight should consider departing on Wednesday mornings 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.
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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.

Temperature and rainfall in St. Louis by month

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

STL

Temperature

32 - 80.6 °F

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 July 25, 2024.
Get a feel of what it's like to fly with Frontier, American Airlines and Delta 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.
Southwest
8.2
Very good
5,641 reviews

Boarding

8.3

Crew

8.7

Overall

8.2

Food

7.3

Comfort

8.1

Entertainment

7.8

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Southwest
8.2
Very good
5,641 reviews
Southwest
8.2
Very good
5,641 reviews

Boarding

8.3

Crew

8.7

Overall

8.2

Food

7.3

Comfort

8.1

Entertainment

7.8

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Alaska Airlines
8.1
Very good
9,365 reviews
Southwest
8.2
Very good
5,641 reviews

Boarding

8.3

Crew

8.7

Overall

8.2

Food

7.3

Comfort

8.1

Entertainment

7.8

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Delta
8.0
Very good
9,630 reviews
Southwest
8.2
Very good
5,641 reviews

Boarding

8.3

Crew

8.7

Overall

8.2

Food

7.3

Comfort

8.1

Entertainment

7.8

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

United Airlines
7.4
Good
10,000 reviews
Southwest
8.2
Very good
5,641 reviews

Boarding

8.3

Crew

8.7

Overall

8.2

Food

7.3

Comfort

8.1

Entertainment

7.8

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

WestJet
7.4
Good
2,761 reviews
Southwest
8.2
Very good
5,641 reviews

Boarding

8.3

Crew

8.7

Overall

8.2

Food

7.3

Comfort

8.1

Entertainment

7.8

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

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 03m on average. When it comes time to book airfare, you have a few options: there are 20 outbound flights from Denver Intl to Lambert-St Louis offered by 3 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 $55, but on average you can expect to pay $86.

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

    Cheapflights has at least 20 direct flights from Denver to St. Louis under $100. A good price for a nonstop flight from Denver to St. Louis is less than $91.

  • Are there last-minute flights available from Denver to St. Louis for under $200?

    There are currently 20+ open flights from Denver to St. Louis within the next 7 days for less than $200.

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

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

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

    Within the past month, 23 users have taken a look at flights from Denver Intl to Lambert-St Louis.

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

    On average 3 flights depart from Denver to St. Louis per day.
    Morning (6am - Noon) - 33% of flight departures
    Evening (6pm - Midnight) - 67% 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 11m. Frontier provides one of the quickest options available for as low as $55. The distance from Denver to St. Louis is about 772 mi. Most flights are nonstop.

  • What is the cheapest airline to fly 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 $55 on this airline. Frontier is currently priced 66% 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 $88 and $109 on Delta and United Airlines, 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: Sun Country Air (100%), Frontier (75%), Air Canada (75%).

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

    While on average a flight from Denver to St. Louis is generally $211, our data shows the cheapest flight currently is $26. When looking at the most popular route, (Denver Intl - Lambert-St Louis), you can expect to pay $110 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 7/25.

  • What are the most popular airlines that fly from Denver to St. Louis?

    Consider American Airlines, Frontier or United Airlines when booking your flight. These represent the most popular airlines when flying from Denver to St. Louis.

  • 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 $312). Flying from Denver 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 3 airlines flying from Denver to St. Louis

Discover the top 3 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 2,752,877 searches. Data last updated July 25, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$43Average$127FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$119Average$298FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$227Average$316FlexibilityNo cancel feeOn-time71%
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Search flights from Denver to St. Louis by cabin class

Find flights from Denver to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
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Hourly flight availability from Denver to St. Louis

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 July 25, 2024.
4%of flight departuresEarly morningMidnight to 6 am
42%of flight departuresMorning6 am to noon
25%of flight departuresAfternoonNoon to 6 pm
29%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Denver to St. Louis

Explore weekly flight availability from Denver 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 July 25, 2024.
Sunday16daily flights
Monday24daily flights
Tuesday22daily flights
Wednesday22daily flights
Thursday24daily flights
Friday24daily flights
Saturday12daily flights

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