CA $120 Cheap Flights from St. Louis (STL) to Denver (DEN)

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

Prices were available within the past 7 days and start at CA $120 for one-way flights and CA $267 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu., Jul. 4 - Mon., Jul. 8
STL
St. Louis
DEN
Denver
CA $267 Roundtrip, just found
CA $267
Roundtrip
just found
Select Delta flight, departing Thu., Jul. 4 from St. Louis to Denver, returning Mon., Jul. 8, priced at CA $267 just found
Delta
Thu., Jul. 4 - Mon., Jul. 8
STL
St. Louis
DEN
Denver
CA $317 Roundtrip, just found
CA $317
Roundtrip
just found
Select Delta flight, departing Thu., Jul. 4 from St. Louis to Denver, returning Mon., Jul. 8, priced at CA $317 just found
American Airlines
Thu., Jul. 4 - Mon., Jul. 8
STL
St. Louis
DEN
Denver
CA $355 Roundtrip, just found
CA $355
Roundtrip
just found
Select American Airlines flight, departing Thu., Jul. 4 from St. Louis to Denver, returning Mon., Jul. 8, priced at CA $355 just found
Delta
Thu., Jul. 4 - Mon., Jul. 8
STL
St. Louis
DEN
Denver
CA $356 Roundtrip, just found
CA $356
Roundtrip
just found
Select Delta flight, departing Thu., Jul. 4 from St. Louis to Denver, returning Mon., Jul. 8, priced at CA $356 just found
American Airlines
Sun., Jun. 30 - Thu., Jul. 4
STL
St. Louis
DEN
Denver
CA $384 Roundtrip, just found
CA $384
Roundtrip
just found
Select American Airlines flight, departing Sun., Jun. 30 from St. Louis to Denver, returning Thu., Jul. 4, priced at CA $384 just found
American Airlines
Sun., Jun. 30 - Thu., Jul. 4
STL
St. Louis
DEN
Denver
CA $389 Roundtrip, just found
CA $389
Roundtrip
just found
Select American Airlines flight, departing Sun., Jun. 30 from St. Louis to Denver, returning Thu., Jul. 4, priced at CA $389 just found
Delta
Wed., Jun. 12 - Sat., Jun. 15
STL
St. Louis
DEN
Denver
CA $397 Roundtrip, found 4 days ago
CA $397
Roundtrip
found 4 days ago
Select Delta flight, departing Wed., Jun. 12 from St. Louis to Denver, returning Sat., Jun. 15, priced at CA $397 found 4 days ago
American Airlines
Sun., Jun. 30 - Thu., Jul. 4
STL
St. Louis
DEN
Denver
CA $401 Roundtrip, just found
CA $401
Roundtrip
just found
Select American Airlines flight, departing Sun., Jun. 30 from St. Louis to Denver, returning Thu., Jul. 4, priced at CA $401 just found
American Airlines
Sun., Jun. 30 - Thu., Jul. 4
STL
St. Louis
DEN
Denver
CA $411 Roundtrip, just found
CA $411
Roundtrip
just found
Select American Airlines flight, departing Sun., Jun. 30 from St. Louis to Denver, returning Thu., Jul. 4, priced at CA $411 just found
Delta
Wed., Jun. 12 - Fri., Jun. 14
STL
St. Louis
DEN
Denver
CA $418 Roundtrip, found 4 days ago
CA $418
Roundtrip
found 4 days ago
Select Delta flight, departing Wed., Jun. 12 from St. Louis to Denver, returning Fri., Jun. 14, priced at CA $418 found 4 days ago
Flight from St. Louis to Denver (STL - DEN) route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Denver Intl.
Roundtrip price
CA $267
Distance
1228 km

St. Louis to Denver Flights

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

With Expedia, it’s simple to find and book flights to Denver from St. Louis 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 Denver 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 St. Louis to Denver today, tomorrow, or this week.  

 

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

Sort your search results by price to find great deals on your flight from St. Louis to Denver—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Denver from St. Louis currently is just CA $267 rising to CA $418.  

Here are more money-saving tips: 

  • Fly in July when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Denver  
  • 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 Denver from St. Louis 

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 Denver with Expedia today.

Frequently asked questions

How much is a flight from St. Louis Lambert International Airport to DIA airport?
Pack your bags, because round-trip flights from Lambert Field to DIA airport start from CA $267. That’s based on fares advertised within the last 7 days on Expedia for flights departing within the next year. Prices can change quickly, so book now to nab the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from St. Louis Lambert International Airport to Denver Intl. Airport (DEN)?
Every air carrier has its own terms and conditions. If you do decide to cancel, follow the simple instructions on our Customer Service Portal.
How do I find cheap flights from Lambert Field to DIA airport 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 St. Louis Lambert International Airport to DIA airport flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Lambert Field to Denver Intl. Airport (DEN)?
That new movie you’ve been eager to see will have to wait — the flight distance between Lambert Field and Denver Airport is only 1,250 kilometers. The captain will be instructing you to put your seat upright for landing before you know it.
Which airlines fly direct from STL to DEN?
Southwest Airlines (WN) is one of the top choices for many travelers flying between Lambert Field and DEN. Select from the 178 flights it operates on this route each month. You could also take a look at fares with United Airlines (UA). This carrier operates 121 flights a month between St. Louis and Denver.
Are St. Louis Lambert International Airport to Denver Airport flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from St. Louis Lambert International Airport to Denver Airport can be hit-or-miss. It is possible to find a bargain, but then again, you could miss out entirely! If you’d prefer to play it safe and start your trip planning early on, Expedia compares flight deals up to 12 months in advance. Just keep in mind that not all airlines release their prices so far in advance. Our top tip? Check back often as prices are updated frequently.
*Available to Expedia members.