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

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

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Frequently asked questions

How long does it take to fly from STL to DEN?
United Airlines has a direct flight leaving Lambert Field at 1:37PM and reaching DIA airport at 2:59PM — a travel time of 2 hours and 22 minutes. Pick a seat, pack a few things to keep you amused and the time will rush by.
Is it cheaper to buy a plane ticket from STL to DIA airport last minute?
Being spontaneous is a rewarding way to explore the globe, but it's not always the ideal way to get your hands on a bargain airfare. Think about booking your STL to Denver Intl. Airport (DEN) trip in advance instead of leaving it till the last minute. Based on flight pricing and demand studies in 2022, we have found that the best time to book domestic flights is between 28 – 35 days ahead of the departure date, and international flights three to four months in advance. Leave your spontaneity for when you get to your destination!
What airports do you fly into for Denver from St. Louis?
Denver Intl. Airport (DEN), Centennial Airport (APA) and Broomfield, CO (BJC-Rocky Mountain Metropolitan) are your choices when connecting from St. Louis to Denver. Roughly 31 kilometers east of downtown Denver, Denver Intl. Airport (DEN) is the city's principal entry point. Think about factors such as flight schedules and the distance to your hotel before choosing your airport. Empower Field at Mile High and Coors Field are a couple of leading attractions to check out when you reach your destination.
What are the most popular departure times for flights from STL to Denver Intl. Airport (DEN)?
For United Airlines flights making their way from Lambert Field to DEN, the busiest period is between 8:00 AM - 9:00 AM. If you want to avoid holdups, head off in the morning. This way you're likely to dodge air traffic that builds up in the afternoon.
Can I change the date of my flight from STL to DEN?
Expedia makes it a breeze to make amendments to your Lambert Field to Denver Airport trip yourself. Access your itinerary via the Expedia Trips portal and choose "change flight." Look for new flights and lock in the one that better suits your plans. You'll see an estimate of any flight change costs. Alternatively, use our Customer Service portal to chat to our Virtual Agent and quickly get answers to all your questions.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Denver Intl.
Distance
1228 km
Average flight time
1 hour 20 mins

Book with confidence

Book with confidence

St. Louis to Denver Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from St. Louis to Denver offer the perfect respite. Not only does exploring Denver 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 St. Louis to Denver 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 Denver are only a plane trip away. Book your travel arrangements with us today!

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

St. Louis to Denver Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia