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Flights from St. Louis to Denver
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Book flight tickets from St. Louis to Denver starting at ₹ 1,547

For as little as ₹ 1,547, you can take your next adventure to Denver without breaking the bank. Choose between one-way and return tickets from St. Louis below.

  • One way
  • Round-trip
      • Cheapest nonstop
        STL18:46
        2h 36m
        Nonstop
        DEN20:22
        Sat, Dec 7|St. Louis - Denver|Frontier Airlines
        ₹ 1,547₹ 3,752
        59% OFF
        59% OFF
        ₹ 3,752₹ 1,547

        Choose Frontier Airlines flights from St. Louis to Denver. The one-way direct flight with Frontier Airlines departs from St.Louis Lambert International Airport on Sat, Dec 7, arriving at Denver International Airport. One-way ticket prices start from ₹ 1,547 including taxes and charges.

      • STL18:46
        2h 31m
        Nonstop
        DEN20:17
        Sat, Jan 18|St. Louis - Denver|Frontier Airlines
        ₹ 2,222₹ 3,752
        41% OFF
        41% OFF
        ₹ 3,752₹ 2,222

        Choose Frontier Airlines flights from St. Louis to Denver. The one-way direct flight with Frontier Airlines departs from St.Louis Lambert International Airport on Sat, Jan 18, arriving at Denver International Airport. One-way ticket prices start from ₹ 2,222 including taxes and charges.

      • STL21:46
        2h 40m
        Nonstop
        DEN23:26
        Tue, Dec 17|St. Louis - Denver|Frontier Airlines
        ₹ 2,292₹ 3,752
        39% OFF
        39% OFF
        ₹ 3,752₹ 2,292

        Choose Frontier Airlines flights from St. Louis to Denver. The one-way direct flight with Frontier Airlines departs from St.Louis Lambert International Airport on Tue, Dec 17, arriving at Denver International Airport. One-way ticket prices start from ₹ 2,292 including taxes and charges.

      • STL18:46
        2h 36m
        Nonstop
        DEN20:22
        Sat, Dec 14|St. Louis - Denver|Frontier Airlines
        ₹ 2,432
        ₹ 2,432

        Choose Frontier Airlines flights from St. Louis to Denver. The one-way direct flight with Frontier Airlines departs from St.Louis Lambert International Airport on Sat, Dec 14, arriving at Denver International Airport. One-way ticket prices start from ₹ 2,432 including taxes and charges.

      • STL18:46
        2h 31m
        Nonstop
        DEN20:17
        Sat, Jan 11|St. Louis - Denver|Frontier Airlines
        ₹ 2,653
        ₹ 2,653

        Choose Frontier Airlines flights from St. Louis to Denver. The one-way direct flight with Frontier Airlines departs from St.Louis Lambert International Airport on Sat, Jan 11, arriving at Denver International Airport. One-way ticket prices start from ₹ 2,653 including taxes and charges.

      • STL18:46
        2h 36m
        Nonstop
        DEN20:22
        Fri, Dec 6|St. Louis - Denver|Frontier Airlines
        ₹ 3,048
        ₹ 3,048

        Choose Frontier Airlines flights from St. Louis to Denver. The one-way direct flight with Frontier Airlines departs from St.Louis Lambert International Airport on Fri, Dec 6, arriving at Denver International Airport. One-way ticket prices start from ₹ 3,048 including taxes and charges.

      • STL18:46
        2h 36m
        Nonstop
        DEN20:22
        Fri, Dec 13|St. Louis - Denver|Frontier Airlines
        ₹ 3,176
        ₹ 3,176

        Choose Frontier Airlines flights from St. Louis to Denver. The one-way direct flight with Frontier Airlines departs from St.Louis Lambert International Airport on Fri, Dec 13, arriving at Denver International Airport. One-way ticket prices start from ₹ 3,176 including taxes and charges.

      • STL18:49
        2h 36m
        Nonstop
        DEN20:25
        Fri, Jan 10|St. Louis - Denver|Frontier Airlines
        ₹ 3,188
        ₹ 3,188

        Choose Frontier Airlines flights from St. Louis to Denver. The one-way direct flight with Frontier Airlines departs from St.Louis Lambert International Airport on Fri, Jan 10, arriving at Denver International Airport. One-way ticket prices start from ₹ 3,188 including taxes and charges.

      • STL18:46
        2h 36m
        Nonstop
        DEN20:22
        Wed, Jan 15|St. Louis - Denver|Frontier Airlines
        ₹ 3,223
        ₹ 3,223

        Choose Frontier Airlines flights from St. Louis to Denver. The one-way direct flight with Frontier Airlines departs from St.Louis Lambert International Airport on Wed, Jan 15, arriving at Denver International Airport. One-way ticket prices start from ₹ 3,223 including taxes and charges.

      • STL18:46
        2h 36m
        Nonstop
        DEN20:22
        Wed, Dec 11|St. Louis - Denver|Frontier Airlines
        ₹ 3,223
        ₹ 3,223

        Choose Frontier Airlines flights from St. Louis to Denver. The one-way direct flight with Frontier Airlines departs from St.Louis Lambert International Airport on Wed, Dec 11, arriving at Denver International Airport. One-way ticket prices start from ₹ 3,223 including taxes and charges.

      • STL13:00
        3h 5m
        Nonstop
        DEN14:00
        Mon, Dec 2|St. Louis - Denver|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 St. Louis to Denver

Explore the best time to buy affordable tickets to Denver 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 St. Louis to Denver

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 St. Louis to Denver.

Frontier Airlines
From ₹ 1,547
Delta Air Lines
From ₹ 6,596
American Airlines
From ₹ 6,655
United Airlines
From ₹ 7,097
Southwest Airlines
From ₹ 9,947
Alaska Airlines
From ₹ 13,274

Find more flights and airlines

Alternative Routes from St. Louis to Denver

Searching for potential routes that might be cheaper and faster? There are a few alternative ways to get to Denver from St. Louis which could help you save money and time.

  • Cheapest
    Frontier Airlines
    STL
    18:46
    2h 36m
    Nonstop
    DEN
    20:22
    St.Louis Lambert International Airport - Denver International Airport
    Sat, Dec 7Frontier Airlines
    ₹ 1,547
  • Frontier Airlines
    STL
    18:46
    2h 36m
    Nonstop
    DEN
    20:22
    St.Louis Lambert International Airport - Denver International Airport
    Sat, Dec 7Frontier Airlines
    ₹ 1,547
    Find More Flights

FAQ

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

    Airlines adjust prices for flights from St. Louis to Denver 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 St. Louis (STL) to Denver (DEN) cost?

    According to Trip.com's data, the lowest price is around ₹ 17,404.

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

    It takes around 3 hours 7 minutes to fly from St. Louis (STL) to Denver (DEN).

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

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

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

If you don’t know some of the key things to look out for when buying flight tickets, prices can often end up sky high or, worse, sold out! We’ve carefully compiled our six most important steps to help ensure you’re getting the best deals when planning your next journey.
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 St. Louis to Denver

Cheapest nonstop flight price₹ 1,547
Cheapest round-trip ticket price₹ 3,920
Off-season for travelDecember
Peak season for travelAugust
Flight distance1,253.6 km
Average flight time3 hours 7 minutes
Popular airlineAmerican Airlines

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