€94 Cheap Flights Denver to St. Louis (DEN-STL)

View €94 flight on Mon, 3 Nov 2025Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to St. Louis Lambert Intl. Airport (STL)

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

Prices were available within the past 7 days and start at €94 for one-way flights and €259 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 14 Oct - Thu, 16 Oct
DEN
Denver
STL
St. Louis
€259 Return, found 5 days ago
€259
Return
found 5 days ago
Select Delta flight, departing Tue, 14 Oct from Denver to St. Louis, returning Thu, 16 Oct, priced at €259 found 5 days ago
American Airlines
Tue, 14 Oct - Thu, 16 Oct
DEN
Denver
STL
St. Louis
€275 Return, found 5 days ago
€275
Return
found 5 days ago
Select American Airlines flight, departing Tue, 14 Oct from Denver to St. Louis, returning Thu, 16 Oct, priced at €275 found 5 days ago
United
Tue, 14 Oct - Thu, 16 Oct
DEN
Denver
STL
St. Louis
€280 Return, found 5 days ago
€280
Return
found 5 days ago
Select United flight, departing Tue, 14 Oct from Denver to St. Louis, returning Thu, 16 Oct, priced at €280 found 5 days ago
American Airlines
Tue, 14 Oct - Thu, 16 Oct
DEN
Denver
STL
St. Louis
€293 Return, found 5 days ago
€293
Return
found 5 days ago
Select American Airlines flight, departing Tue, 14 Oct from Denver to St. Louis, returning Thu, 16 Oct, priced at €293 found 5 days ago
Delta
Tue, 14 Oct - Thu, 16 Oct
DEN
Denver
STL
St. Louis
€297 Return, found 5 days ago
€297
Return
found 5 days ago
Select Delta flight, departing Tue, 14 Oct from Denver to St. Louis, returning Thu, 16 Oct, priced at €297 found 5 days ago
American Airlines
Tue, 14 Oct - Thu, 16 Oct
DEN
Denver
STL
St. Louis
€310 Return, found 5 days ago
€310
Return
found 5 days ago
Select American Airlines flight, departing Tue, 14 Oct from Denver to St. Louis, returning Thu, 16 Oct, priced at €310 found 5 days ago
Delta
Tue, 14 Oct - Thu, 16 Oct
DEN
Denver
STL
St. Louis
€314 Return, found 5 days ago
€314
Return
found 5 days ago
Select Delta flight, departing Tue, 14 Oct from Denver to St. Louis, returning Thu, 16 Oct, priced at €314 found 5 days ago
United
Tue, 14 Oct - Thu, 16 Oct
DEN
Denver
STL
St. Louis
€319 Return, found 5 days ago
€319
Return
found 5 days ago
Select United flight, departing Tue, 14 Oct from Denver to St. Louis, returning Thu, 16 Oct, priced at €319 found 5 days ago

Find the cheapest month to fly from Denver (DEN) to St. Louis (STL)

February is typically the cheapest month to fly

From €49 - €242 per traveller.

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 €259. 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 cancelled 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 kilometres, 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 travellers 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.

Travel information

Travel information

Origin airport
Denver Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, United
Return price
€258
Distance
1228 km
Average flight time
3 hours 1 min

Book with confidence

Book with confidence

Perfect flights from Denver to St. Louis

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Denver to St. Louis. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Denver Intl. to Lambert-St. Louis Intl. ticket options cater to your travel preferences, with incredible one-way fares from €94 and roundtrip prices from €259. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Lambert-St. Louis Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in St. Louis.
Perfect flights from Denver to St. Louis

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