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Cheap flights from Denver to St. Louis from R1 467

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Denver to St. Louis

Cheap return flights

Enter your travel dates to find the best prices.
Southwest Logo
12:25 - 15:20DEN  Denver Intl-STL Lambert-St Louis
1h 55mdirect
Southwest Logo
6:30 - 7:55STL  Lambert-St Louis-DEN Denver Intl
2h 25mdirect
R2 918Southwest
Thu, Dec 3 - Fri, Dec 4
United Airlines Logo
15:50 - 22:59DEN  Denver Intl-STL Lambert-St Louis
6h 09m1 stop Chicago O'Hare Intl
United Airlines Logo
8:40 - 10:11STL  Lambert-St Louis-DEN Denver Intl
2h 31mdirect
R3 082United Airlines
Thu, Dec 3 - Mon, Dec 7
United Airlines Logo
13:55 - 17:00DEN  Denver Intl-STL Lambert-St Louis
2h 05mdirect
United Airlines Logo
18:09 - 19:45STL  Lambert-St Louis-DEN Denver Intl
2h 36mdirect
R3 115United Airlines
Wed, Dec 30 - Fri, Jan 1
Delta Logo
6:00 - 13:28DEN  Denver Intl-STL Lambert-St Louis
6h 28m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:31 - 16:02STL  Lambert-St Louis-DEN Denver Intl
4h 31m1 stop Minneapolis St Paul
R3 247Delta
Thu, Dec 3 - Wed, Dec 9
Southwest Logo
18:05 - 21:10DEN  Denver Intl-STL Lambert-St Louis
2h 05mdirect
Southwest Logo
8:25 - 9:45STL  Lambert-St Louis-DEN Denver Intl
2h 20mdirect
R3 280Southwest
Wed, Dec 2 - Tue, Dec 8
Southwest Logo
14:50 - 19:05DEN  Denver Intl-STL Lambert-St Louis
3h 15m1 stop Omaha Eppley Airfield
Southwest Logo
19:40 - 21:00STL  Lambert-St Louis-DEN Denver Intl
2h 20mdirect
R3 379Southwest
Sat, Dec 19 - Wed, Dec 23
United Airlines Logo
9:50 - 12:53DEN  Denver Intl-STL Lambert-St Louis
2h 03mdirect
United Airlines Logo
6:30 - 12:45STL  Lambert-St Louis-DEN Denver Intl
7h 15m1 stop Chicago O'Hare Intl
R3 445United Airlines
Wed, Dec 2 - Sat, Dec 5
United Airlines Logo
13:55 - 17:00DEN  Denver Intl-STL Lambert-St Louis
2h 05mdirect
United Airlines Logo
18:09 - 19:45STL  Lambert-St Louis-DEN Denver Intl
2h 36mdirect
R3 461United Airlines
Sat, Dec 19 - Wed, Dec 23
Southwest Logo
15:40 - 18:35DEN  Denver Intl-STL Lambert-St Louis
1h 55mdirect
Southwest Logo
6:10 - 7:40STL  Lambert-St Louis-DEN Denver Intl
2h 30mdirect
R3 511Southwest
Mon, Dec 14 - Thu, Dec 17
Southwest Logo
13:25 - 16:25DEN  Denver Intl-STL Lambert-St Louis
2h 00mdirect
Southwest Logo
6:45 - 8:15STL  Lambert-St Louis-DEN Denver Intl
2h 30mdirect
R3 527Southwest
Thu, Jan 28 - Sat, Jan 30

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Southwest flights from Denver to St. Louis

Our best Southwest deals on Denver to St. Louis flight tickets
Southwest
Dec 3
DEN12:25Denver Intl
1h 55m
STL15:20Lambert-St Louis
Dec 4
STL6:30Lambert-St Louis
2h 25m
DEN7:55Denver Intl
R2 918
Southwest
Dec 2
DEN18:05Denver Intl
2h 05m
STL21:10Lambert-St Louis
Dec 8
STL8:25Lambert-St Louis
2h 20m
DEN9:45Denver Intl
R3 280
Southwest
Dec 19
DEN14:50Denver Intl
3h 15m
1 stop
STL19:05Lambert-St Louis
Dec 23
STL19:40Lambert-St Louis
2h 20m
DEN21:00Denver Intl
R3 379

United Airlines flights from Denver to St. Louis

Our best United Airlines deals on Denver to St. Louis flight tickets
United Airlines
Dec 3
DEN15:50Denver Intl
6h 09m
1 stop
STL22:59Lambert-St Louis
Dec 7
STL8:40Lambert-St Louis
2h 31m
DEN10:11Denver Intl
R3 082
United Airlines
Dec 30
DEN13:55Denver Intl
2h 05m
STL17:00Lambert-St Louis
Jan 1
STL18:09Lambert-St Louis
2h 36m
DEN19:45Denver Intl
R3 115
United Airlines
Dec 2
DEN9:50Denver Intl
2h 03m
STL12:53Lambert-St Louis
Dec 5
STL6:30Lambert-St Louis
7h 15m
1 stop
DEN12:45Denver Intl
R3 445

momondo Fare Finder

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

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Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

DenverSt. Louis

DEN Denver Intl - STL Lambert-St Louis

DENSTL

Denver Intl

Thu 3/12

12:25-15:20

Nonstop1h 55m

Lambert-St Louis

Fri 4/12

6:30-7:55

Nonstop2h 25m

R2 918

DenverSt. Louis

DEN Denver Intl - STL Lambert-St Louis

DENSTL

Denver Intl

Thu 3/12

15:50-22:59

1 stop6h 09m

Lambert-St Louis

Mon 7/12

8:40-10:11

Nonstop2h 31m

R3 082

DenverSt. Louis

DEN Denver Intl - STL Lambert-St Louis

DENSTL

Denver Intl

Wed 30/12

13:55-17:00

Nonstop2h 05m

Lambert-St Louis

Fri 1/1

18:09-19:45

Nonstop2h 36m

R3 115

DenverSt. Louis

DEN Denver Intl - STL Lambert-St Louis

DENSTL

Denver Intl

Thu 3/12

6:00-13:28

1 stop6h 28m

Lambert-St Louis

Wed 9/12

12:31-16:02

1 stop4h 31m

R3 247

DenverSt. Louis

DEN Denver Intl - STL Lambert-St Louis

DENSTL

Denver Intl

Wed 2/12

18:05-21:10

Nonstop2h 05m

Lambert-St Louis

Tue 8/12

8:25-9:45

Nonstop2h 20m

R3 280

DenverSt. Louis

DEN Denver Intl - STL Lambert-St Louis

DENSTL

Denver Intl

Sat 19/12

14:50-19:05

1 stop3h 15m

Lambert-St Louis

Wed 23/12

19:40-21:00

Nonstop2h 20m

R3 379

DenverSt. Louis

DEN Denver Intl - STL Lambert-St Louis

DENSTL

Denver Intl

Wed 2/12

9:50-12:53

Nonstop2h 03m

Lambert-St Louis

Sat 5/12

6:30-12:45

1 stop7h 15m

R3 445

DenverSt. Louis

DEN Denver Intl - STL Lambert-St Louis

DENSTL

Denver Intl

Sat 19/12

13:55-17:00

Nonstop2h 05m

Lambert-St Louis

Wed 23/12

18:09-19:45

Nonstop2h 36m

R3 461

DenverSt. Louis

DEN Denver Intl - STL Lambert-St Louis

DENSTL

Denver Intl

Mon 14/12

15:40-18:35

Nonstop1h 55m

Lambert-St Louis

Thu 17/12

6:10-7:40

Nonstop2h 30m

R3 511

DenverSt. Louis

DEN Denver Intl - STL Lambert-St Louis

DENSTL

Denver Intl

Thu 28/1

13:25-16:25

Nonstop2h 00m

Lambert-St Louis

Sat 30/1

6:45-8:15

Nonstop2h 30m

R3 527

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Denver to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Denver and St. Louis?

Prices are currently low for flights on this route.

Typical prices usually range from R3 560 to R5 934.
The lowest price recently found on this route was R2 918.

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

In general, January is the cheapest month to fly from Denver to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around R3 082. If you aren’t able to travel to St. Louis during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of R4 269.

What is the cheapest Denver Intl to Lambert-St Louis flight route?

Fly from Denver Intl to Lambert-St Louis for the best Denver Intl - Lambert-St Louis flight prices

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

You are more likely to see cheaper flights to St. Louis from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around R4 915 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Denver for as low as R4 220 on momondo.

What cabin class options are available on Denver to St. Louis flights?

There is only 1 cabin class available to choose from on Denver to St. Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Denver to St. Louis flight prices changed over time?

As of November 2026, prices for Denver to St. Louis flights are approximately 33% more expensive when compared to flights at the same time last year.

When to book flights from Denver to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Denver to St. Louis (DEN to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Denver to St. Louis

Best price found

R1 467

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Denver in the past 72 hours is R1 467. The best return flight deal from Denver to St. Louis found on momondo in the last 72 hours is R2 918.
Direct flights go from Denver to St. Louis every day.
There is 1 airport in St. Louis. From Denver there are direct flights to Lambert-St Louis (STL).
Search flight deals

Frequently asked questions about flying from Denver to St. Louis

  • How far is Denver Intl to Lambert-St Louis by plane?

    Lambert-St Louis is 1278,1 km away from Denver Intl.

  • When did momondo last update prices for flights from Denver Intl Airport to Lambert-St Louis Airport?

    Prices for flights from Denver Intl Airport to Lambert-St Louis Airport are updated daily.

  • How old do you have to be to fly from Denver Intl Airport to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Denver Intl Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Denver to St. Louis?

Why use momondo?

Why should I use momondo to find a flight deal from Denver to St. Louis?

Finding the right flight to St. Louis from Denver is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

Can I find flights from Denver to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Denver to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from Denver to St. Louis?

momondo helps you find the best flight between Denver and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Denver to St. Louis right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Denver to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

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