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St. Louis to Denver International Airport flight
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Cheap Flights from St. Louis to Denver International Airport

  • One way
  • Round-trip
sortSort by: Lowest Price
  • Sort by: Lowest Price
  • Sort by: Earliest Flight
      • STL22:44
        2h 36m
        Direct
        DEN00:20
        St. Louis - Denver|Tue, Jun 4|Frontier Airlines
        €25€56
        56% OFF
        56% OFF
        €56€25
      • STL22:32
        2h 29m
        Direct
        DEN00:01
        St. Louis - Denver|Tue, Jul 9|Frontier Airlines
        €25€56
        56% OFF
        56% OFF
        €56€25
      • STL15:47
        2h 29m
        Direct
        DEN17:16
        St. Louis - Denver|Tue, Jun 11|Frontier Airlines
        €26€56
        53% OFF
        53% OFF
        €56€26
      • STL20:02
        2h 30m
        Direct
        DEN21:32
        St. Louis - Denver|Sat, Jun 15|Frontier Airlines
        €27
        €27
      • STL20:02
        2h 30m
        Direct
        DEN21:32
        St. Louis - Denver|Sat, Jun 8|Frontier Airlines
        €28
        €28
      • STL20:02
        2h 30m
        Direct
        DEN21:32
        St. Louis - Denver|Wed, Jun 12|Frontier Airlines
        €28
        €28
      • STL15:47
        2h 29m
        Direct
        DEN17:16
        St. Louis - Denver|Tue, Jun 18|Frontier Airlines
        €33
        €33
      • STL20:04
        2h 31m
        Direct
        DEN21:35
        St. Louis - Denver|Sat, Jun 1|Frontier Airlines
        €34
        €34
      • STL20:02
        2h 30m
        Direct
        DEN21:32
        St. Louis - Denver|Sat, Jun 22|Frontier Airlines
        €34
        €34
      • STL20:02
        2h 23m
        Direct
        DEN21:25
        St. Louis - Denver|Wed, Jul 17|Frontier Airlines
        €39
        €39
      • STL13:00
        3h 5m
        Direct
        DEN14:00
        St. Louis - Denver|Thu, May 30|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.

Selected Airlines from St. Louis to Denver International Airport
Frontier Airlines
From €25
Delta Air Lines
From €84
American Airlines
From €89
United Airlines
From €103
Sun Country Airlines
From €150
Southwest Airlines
From €155
Alaska Airlines
From €167
Southern Airways Express
From €246
ANA airlines

Find more flights and airlines

There are 1 airport(s) in St. Louis. Discover the top routes now!

  • 21.12 km from downtown St. Louis
    St. Louis Lambert International Airport
    Tickets From
    €25
Flight Schedule from St. Louis to Denver International Airport
Flight info.
Departure
Arrival
Weekly Schedule

  1. F94567

    Frontier Airlines

    20:00

    STL

    2.5h

    Direct

    21:28

    DEN

    --T-T--
    Search

  2. F91499

    Frontier Airlines

    20:04

    STL

    2.5h

    Direct

    21:35

    DEN

    S----F-
    Search

  3. F94477

    Frontier Airlines

    22:59

    STL

    2.5h

    Direct

    00:26

    DEN

    -M-W--S
    Search
Find more flights and airlines

Flight Info of Flights from St. Louis to Denver International Airport

Cheapest round-trip ticket price

€51

Cheapest nonstop flight price

€24

Off-season for travel

February

Peak season for travel

November

FAQs for St. Louis to Denver International Airport Flights

  • 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 €254.

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

    It takes around 2 hours 53 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): United Airlines, Southwest Airlines, Frontier Airlines, Volaris and Air Canada.

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