CA $133 Cheap Flights from Denver (DEN) to St. Louis (STL)

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Cheap flights from Denver (DEN) to St. Louis (STL)

Prices were available within the past 7 days and start at CA $133 for one-way flights and CA $295 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri., Jun. 21 - Mon., Jun. 24
DEN
Denver
STL
St. Louis
CA $295 Roundtrip, found 16 hours ago
CA $295
Roundtrip
found 16 hours ago
Select Delta flight, departing Fri., Jun. 21 from Denver to St. Louis, returning Mon., Jun. 24, priced at CA $295 found 16 hours ago
Sun Country Airlines
Thu., Jul. 4 - Sun., Jul. 7
DEN
Denver
STL
St. Louis
CA $321 Roundtrip, found 3 days ago
CA $321
Roundtrip
found 3 days ago
Select Sun Country Airlines flight, departing Thu., Jul. 4 from Denver to St. Louis, returning Sun., Jul. 7, priced at CA $321 found 3 days ago
American Airlines
Sat., Jun. 8 - Mon., Jun. 10
DEN
Denver
STL
St. Louis
CA $324 Roundtrip, found 6 days ago
CA $324
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat., Jun. 8 from Denver to St. Louis, returning Mon., Jun. 10, priced at CA $324 found 6 days ago
American Airlines
Sat., Jun. 8 - Mon., Jun. 10
DEN
Denver
STL
St. Louis
CA $326 Roundtrip, found 6 days ago
CA $326
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat., Jun. 8 from Denver to St. Louis, returning Mon., Jun. 10, priced at CA $326 found 6 days ago
Delta
Sat., Jun. 8 - Mon., Jun. 10
DEN
Denver
STL
St. Louis
CA $329 Roundtrip, found 6 days ago
CA $329
Roundtrip
found 6 days ago
Select Delta flight, departing Sat., Jun. 8 from Denver to St. Louis, returning Mon., Jun. 10, priced at CA $329 found 6 days ago
American Airlines
Sat., Jun. 8 - Mon., Jun. 10
DEN
Denver
STL
St. Louis
CA $332 Roundtrip, found 6 days ago
CA $332
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat., Jun. 8 from Denver to St. Louis, returning Mon., Jun. 10, priced at CA $332 found 6 days ago
American Airlines
Sat., Jun. 8 - Mon., Jun. 10
DEN
Denver
STL
St. Louis
CA $334 Roundtrip, found 6 days ago
CA $334
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat., Jun. 8 from Denver to St. Louis, returning Mon., Jun. 10, priced at CA $334 found 6 days ago
Delta
Fri., Jun. 21 - Mon., Jun. 24
DEN
Denver
STL
St. Louis
CA $336 Roundtrip, found 16 hours ago
CA $336
Roundtrip
found 16 hours ago
Select Delta flight, departing Fri., Jun. 21 from Denver to St. Louis, returning Mon., Jun. 24, priced at CA $336 found 16 hours ago
Delta
Fri., Jun. 21 - Mon., Jun. 24
DEN
Denver
STL
St. Louis
CA $341 Roundtrip, found 16 hours ago
CA $341
Roundtrip
found 16 hours ago
Select Delta flight, departing Fri., Jun. 21 from Denver to St. Louis, returning Mon., Jun. 24, priced at CA $341 found 16 hours ago
Delta
Thu., Jul. 4 - Sun., Jul. 7
DEN
Denver
STL
St. Louis
CA $343 Roundtrip, found 3 days ago
CA $343
Roundtrip
found 3 days ago
Select Delta flight, departing Thu., Jul. 4 from Denver to St. Louis, returning Sun., Jul. 7, priced at CA $343 found 3 days ago
Flight from Denver to St. Louis (DEN - STL) route information
Origin airport
Denver Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta
Roundtrip price
CA $295
Distance
1228 km

Denver to St. Louis Flights

The easy way to book your flights from Denver to St. Louis 

With Expedia, it’s simple to find and book flights to St. Louis from Denver whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are Air Canada, Frontier Airlines, Southwest Airlines, United Airlines nonstop flights to Lambert-St. Louis Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Denver to St. Louis today, tomorrow, or this week.  

 

Save dollars with cheap flights from Denver Intl., DEN to Lambert-St. Louis Intl., STL 

Sort your search results by price to find great deals on your flight from Denver to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from Denver currently is just CA $295 rising to CA $343.  

Here are more money-saving tips: 

  • Fly in June when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to St. Louis  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to St. Louis from Denver 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today.

Frequently asked questions

How much is a flight from Denver Intl. Airport (DEN) to Lambert-St. Louis Intl. Airport (STL)?
Round-trip flights from Denver Intl. Airport (DEN) to STL start from CA $295. This price is based on fares available within the last 7 days on Expedia for flights departing within the next year — book ASAP so you don’t miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from DEN to Lambert-St. Louis Intl. Airport (STL)?
Most flights can be canceled online, but whether you are charged a fee depends on your airline. If you do have to cancel your escape, follow the instructions in the Customer Service Portal.
How do I find cheap flights from DIA airport to STL that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for DIA airport to STL flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Denver Intl. Airport (DEN) to STL?
With a flight distance of 1,250 kilometers, it’s only a short hop from DEN to STL. It might be a quick one, but it’s still worth bringing something to keep you entertained on board.
Which airlines fly direct from Denver Airport to St. Louis Lambert International Airport?
Many travelers choose to fly with Southwest Airlines (WN) from DIA airport to Lambert-St. Louis Intl. Airport (STL). This popular airline offers 178 flights every month, so you can easily find a flight time that’s right for you. United Airlines (UA) is also worth considering. It offers 121 flights every month. Between these two airlines, you’ll be able to find a good deal from Denver to St. Louis.
Are Denver Airport to Lambert Field flight tickets cheaper when they're purchased at the last minute?
It is possible to get a fantastic last-minute deal from Denver Intl. Airport (DEN) to Lambert Field, but it can also be hit-or-miss. As many airlines advertise prices up to 12 months in advance, it’s worthwhile keeping an eye on fares early and being ready to book when you spot a bargain. Expedia compares carrier prices and updates flight deals all the time, so you can be sure you’re always getting the latest offers.
*Available to Expedia members.