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Flights from Denver to St. Louis
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Book flight tickets from Denver to St. Louis starting at IDR 291,315

For as little as IDR 291,315, you can take your next adventure to St. Louis without breaking the bank. Choose between one-way and return tickets from Denver below.

  • One way
  • Round-trip
      • Cheapest nonstop
        DEN05:05
        2h 8m
        Nonstop
        STL08:13
        Sat, Dec 7|Denver - St. Louis|Frontier Airlines
        IDR 291,315IDR 510,221
        43% OFF
        43% OFF
        IDR 510,221IDR 291,315

        Choose Frontier Airlines flights from Denver to St. Louis. The one-way direct flight with Frontier Airlines departs from Denver International Airport on Sat, Dec 7, arriving at St.Louis Lambert International Airport. One-way ticket prices start from IDR 291,315 including taxes and charges.

      • DEN05:05
        2h 8m
        Nonstop
        STL08:13
        Wed, Dec 18|Denver - St. Louis|Frontier Airlines
        IDR 411,784IDR 510,221
        19% OFF
        19% OFF
        IDR 510,221IDR 411,784

        Choose Frontier Airlines flights from Denver to St. Louis. The one-way direct flight with Frontier Airlines departs from Denver International Airport on Wed, Dec 18, arriving at St.Louis Lambert International Airport. One-way ticket prices start from IDR 411,784 including taxes and charges.

      • DEN05:05
        2h 8m
        Nonstop
        STL08:13
        Wed, Dec 4|Denver - St. Louis|Frontier Airlines
        IDR 411,784IDR 510,221
        19% OFF
        19% OFF
        IDR 510,221IDR 411,784

        Choose Frontier Airlines flights from Denver to St. Louis. The one-way direct flight with Frontier Airlines departs from Denver International Airport on Wed, Dec 4, arriving at St.Louis Lambert International Airport. One-way ticket prices start from IDR 411,784 including taxes and charges.

      • DEN05:05
        2h 8m
        Nonstop
        STL08:13
        Wed, Dec 25|Denver - St. Louis|Frontier Airlines
        IDR 411,784
        IDR 411,784

        Choose Frontier Airlines flights from Denver to St. Louis. The one-way direct flight with Frontier Airlines departs from Denver International Airport on Wed, Dec 25, arriving at St.Louis Lambert International Airport. One-way ticket prices start from IDR 411,784 including taxes and charges.

      • DEN06:00
        2h 16m
        Nonstop
        STL09:16
        Wed, Feb 5|Denver - St. Louis|Frontier Airlines
        IDR 429,307
        IDR 429,307

        Choose Frontier Airlines flights from Denver to St. Louis. The one-way direct flight with Frontier Airlines departs from Denver International Airport on Wed, Feb 5, arriving at St.Louis Lambert International Airport. One-way ticket prices start from IDR 429,307 including taxes and charges.

      • DEN05:05
        2h 8m
        Nonstop
        STL08:13
        Sat, Feb 1|Denver - St. Louis|Frontier Airlines
        IDR 431,497
        IDR 431,497

        Choose Frontier Airlines flights from Denver to St. Louis. The one-way direct flight with Frontier Airlines departs from Denver International Airport on Sat, Feb 1, arriving at St.Louis Lambert International Airport. One-way ticket prices start from IDR 431,497 including taxes and charges.

      • DEN05:05
        2h 8m
        Nonstop
        STL08:13
        Wed, Dec 11|Denver - St. Louis|Frontier Airlines
        IDR 433,687
        IDR 433,687

        Choose Frontier Airlines flights from Denver to St. Louis. The one-way direct flight with Frontier Airlines departs from Denver International Airport on Wed, Dec 11, arriving at St.Louis Lambert International Airport. One-way ticket prices start from IDR 433,687 including taxes and charges.

      • DEN05:05
        2h 8m
        Nonstop
        STL08:13
        Sat, Dec 14|Denver - St. Louis|Frontier Airlines
        IDR 433,687
        IDR 433,687

        Choose Frontier Airlines flights from Denver to St. Louis. The one-way direct flight with Frontier Airlines departs from Denver International Airport on Sat, Dec 14, arriving at St.Louis Lambert International Airport. One-way ticket prices start from IDR 433,687 including taxes and charges.

      • DEN06:00
        2h 6m
        Nonstop
        STL09:06
        Wed, Jan 8|Denver - St. Louis|Frontier Airlines
        IDR 433,687
        IDR 433,687

        Choose Frontier Airlines flights from Denver to St. Louis. The one-way direct flight with Frontier Airlines departs from Denver International Airport on Wed, Jan 8, arriving at St.Louis Lambert International Airport. One-way ticket prices start from IDR 433,687 including taxes and charges.

      • DEN06:00
        2h 6m
        Nonstop
        STL09:06
        Sat, Jan 11|Denver - St. Louis|Frontier Airlines
        IDR 433,687
        IDR 433,687

        Choose Frontier Airlines flights from Denver to St. Louis. The one-way direct flight with Frontier Airlines departs from Denver International Airport on Sat, Jan 11, arriving at St.Louis Lambert International Airport. One-way ticket prices start from IDR 433,687 including taxes and charges.

      • DEN13:00
        3h 5m
        Nonstop
        STL14:00
        Fri, Nov 29|Denver - St. Louis|Frontier Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Find the best time to fly from Denver to St. Louis

Explore the best time to buy affordable tickets to St. Louis with our price trend chart, which predicts how flight prices will change in the coming weeks from previous data.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Airlines Flying from Denver to St. Louis

Compare prices from various providers below to understand which option best suits your travel needs, before enjoying a comfortable journey with a trusted airline from Denver to St. Louis.

Frontier Airlines
From IDR 291,315
American Airlines
From IDR 1,057,935
Delta Air Lines
From IDR 1,215,639
United Airlines
From IDR 1,425,912
Southwest Airlines
From IDR 1,730,369
Alaska Airlines
From IDR 2,578,031

Find more flights and airlines

Alternative Routes from Denver to St. Louis

There are various non-direct routes from Denver to St. Louis which could be cheaper and faster! Check out these alternative options to see if they could work for your trip.

  • Cheapest
    Frontier Airlines
    DEN
    05:05
    2h 8m
    Nonstop
    STL
    08:13
    Denver International Airport - St.Louis Lambert International Airport
    Sat, Dec 7Frontier Airlines
    IDR 291,315
  • Frontier Airlines
    DEN
    05:05
    2h 8m
    Nonstop
    STL
    08:13
    Denver International Airport - St.Louis Lambert International Airport
    Sat, Dec 7Frontier Airlines
    IDR 291,315
    Find More Flights

FAQ

  • When are flight tickets from Denver (DEN) to St. Louis (STL) the cheapest?

    Airlines adjust prices for flights from Denver to St. Louis based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Denver (DEN) to St. Louis (STL) cost?

    According to Trip.com's data, the lowest price is around IDR 3,108,093.

  • How long does it take to fly from Denver (DEN) to St. Louis (STL) and what is the distance?

    It takes around 2 hours 17 minutes to fly from Denver (DEN) to St. Louis (STL).

  • What is the transportation method from the main airport to downtown in St. Louis?

    • The distance from St.Louis Lambert International Airport to downtown is about 20 km. It takes about 40 minutes by taxi.

  • What are the most popular airlines that fly from Denver (DEN) to St. Louis (STL)?

    Airlines with flights from Denver (DEN) to St. Louis (STL): Southwest Airlines, Frontier Airlines, United Airlines and Volaris.

How to find a cheap flight from Denver to St. Louis

Understanding the common pitfalls when booking your flight tickets can help you save massively when it comes time to fly. We’ve listed our six essential steps to keep in mind when you’re booking flight tickets to help you find the best price.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Information from Denver to St. Louis

Cheapest nonstop flight priceIDR 291,315
Cheapest round-trip ticket priceIDR 898,039
Off-season for travelNovember
Peak season for travelAugust
Flight distance1,253.6 km
Average flight time2 hours 17 minutes
Popular airlineAmerican Airlines

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