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Cheap Flights from St. Louis to Denver

Prices were available within the past 7 days and starts at $54 for one-way flights and $88 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

St. Louis to Denver route information

Origin Airport Lambert-St. Louis Intl.
Destination Airport Denver Intl.
Airlines Serving American Airlines, Delta, Frontier Airlines, United
Flight Price $87
Distance 767 mi

Cheap STL to DEN Flights

  • How long does the average person stay in Denver?

    Of course, you are not an average person, but if you were, you'd stay around five days.
  • How long does it take to fly from Saint Louis to Denver?

    Southwest Airlines currently holds the quickest travel time with two hours and 15 minutes. So, you would arrive in Denver at 8:05 AM MST if you left Saint Louis at 6:50 AM CST. Remember, there is a one-hour time difference.
  • What is the cheapest day to fly to Denver?

    As of Feb 24th, the best day for booking to Denver (DEN) is Feb 29th. A ticket will cost you $87, which is 64% below the average price to book the same route.
  • Which airline has the least delays from Saint Louis to Denver?

    Booking with Air Wisconsin means you will arrive to Denver approximately the time you were supposed to. In fact, this timely airline has a 95% average for landing before the plane turns into a pumpkin. It never hurts to be prepared. If you should choose this airline, be sure to track the flight status to stay on top of the departure time.
  • How much is a plane ticket to Denver (DEN) from Saint Louis (STL)?

    Cost can range from $87 to $879, prices for STL to DEN do fluctuate more than most routes in US. The further out you book, the more likely you are to save.
  • How many flights are there per day from Saint Louis to Denver?

    The number does differ by the day, but on average, you can expect 25 different choices of flight times when you book. Compared to the average route departing US with seven flight times, you'll have more choices than most.
  • What day has the most flight time options?

    With 33 total flight time options, Wednesday provides the most flexibility from STL to DEN. Saturday currently offers the least amount of flight times with only 12 options.

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 STL to DEN 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 flexbily many prefers to purchase one-way tickets with options to take different airlines. One way ticket to Denver is $54 now!

Package Disclaimer

*Savings amount equal to 100% when flight + hotel are booked together. Prices based on searches conducted by fellow shoppers within the past 24 hours. There is no guarantee that these prices will be in effect at the time of your search. Vacation package savings are based on comparison to prices on Expedia.com of the same components booked separately. Savings vary based on origin/destination, length of trip, stay dates and travel partners, and aren't available on all packages.