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

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

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Frequently asked questions

How long does it take to fly from Denver Intl. Airport (DEN) to Lambert Field?
United Airlines has a direct flight jetting off from Denver Intl. Airport (DEN) at 9:41AM and arriving at STL at 12:41PM — a total flight duration of 2 hours. Secure the best seat available, bring a few things to keep you occupied and the time will rush by.
Is it cheaper to buy a plane ticket from DEN to Lambert-St. Louis Intl. Airport (STL) last minute?
Booking your journey from Denver Airport to Lambert Field at the last minute could save you money if you're lucky to find a terrific deal. However, fares usually don't drop in price closer to the departure date. If you take a wait-and-see approach, flights could also be booked up or the best seats taken (because who wants the middle seat?). If you want to be on the safe side, book well ahead of when you want to leave. It's worth noting that some of the best deals can be found up to 12 months in advance. If your favorite airline hasn't released its fares yet, check back regularly as deals are updated on Expedia all the time.
What airports do you fly into for St. Louis from Denver?
From Denver, you can reach St. Louis via Lambert-St. Louis Intl. Airport (STL), Spirit of St. Louis Airport (SUS) and St. Louis Downtown Airport (CPS). It's a good idea to check which airport is the right option for you before you make a decision. If you decide on Lambert-St. Louis Intl. Airport (STL), it's about 19 kilometers northwest of downtown. Use the dollars you save when booking your ticket with Expedia to enjoy the city's awesome sights, such as Busch Stadium and Gateway Arch.
What are the most popular departure times for flights from Denver Airport to STL?
Between 6:00 PM - 7:00 PM is the busiest period for United Airlines flights making their way from Denver Airport to STL. Our advice? Choose a flight that departs earlier in the day. With air traffic yet to build up, your odds of jumping on a delay-free flight are higher.
Can I change the date of my flight from DIA airport to STL?
Make changes quickly to your DIA airport to Lambert-St. Louis Intl. Airport (STL) ticket through the Expedia Trips portal. But before amending dates or times, review the fare conditions in your itinerary to find out what the carrier will let you do and if fees apply for changes. Some airlines have a change fee per person, on top of any difference in prices. But if you booked in the last 24 hours, you may be able to cancel for free and organize new flights. You can also browse our Customer Service portal for more handy information and to chat with our Virtual Agent.

Travel information

Travel information

Origin airport
Denver Intl.
Destination airport
Lambert-St. Louis Intl.
Distance
1228 km
Average flight time
3 hours 1 min

Book with confidence

Book with confidence

Denver to St. Louis Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Denver to St. Louis offer the perfect respite. Not only does exploring St. Louis provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Denver to St. Louis may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of St. Louis are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to St. Louis more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to St. Louis is now!

Denver to St. Louis Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia