Worldwide Coverage
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Secure Payment
Convenient & reliable booking and payment system

Cheap flight deals from St. Louis to Denver Starting at $27

Discover our range of affordable one-way and round-trip flights from St. Louis to Denver and kick-start your next adventure today!

  • One way
  • Round-trip

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

St. Louis to Denver flight time & flight schedules

Flight info.
Departure
Arrival
Weekly Schedule
  1. F92630

    05:52 pm

    STL

    2.5h

    09:24 pm

    MCO

    ------S
  2. F91733

    06:20 am

    MCO

    4.4h

    08:44 am

    DEN

    SMTWTFS
  3. F94567

    06:51 pm

    STL

    2.5h

    Nonstop

    08:22 pm

    DEN

    S-T-TF-
  4. F93641

    09:29 pm

    STL

    4.0h

    11:29 pm

    LAS

    SMTWTFS
  5. F92016

    09:19 am

    LAS

    2.1h

    12:24 pm

    DEN

    SMTWTFS
  6. F93641

    09:29 pm

    STL

    4.0h

    11:29 pm

    LAS

    SMTWTFS
  7. F93844

    08:36 pm

    LAS

    2.0h

    11:38 pm

    DEN

    SMTWTFS
  8. F93641

    09:29 pm

    STL

    4.0h

    11:29 pm

    LAS

    SMTWTFS
  9. F91994

    12:59 am

    LAS

    1.9h

    03:56 am

    DEN

    ------S
  10. F93641

    09:29 pm

    STL

    4.0h

    11:29 pm

    LAS

    SMTWTFS
  11. F94968

    09:59 pm

    LAS

    2.0h

    12:58 am

    DEN

    -----F-

When is the cheapest time to fly from St. Louis to Denver?

Price trend charts are a great way of tracking how much your flights cost in the lead up to departure and can help you choose when to book your tickets. See how prices to Denver from St. Louis have changed and are set to move below.

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

Find cheap airlines flights from St. Louis to Denver

We have a range of prices from different airlines providing flights from St. Louis to Denver. Check below for the journey which best suits your travel needs.

Frequently Asked Questions

  • 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 $206.
  • How long does it take to fly from St. Louis (STL) to Denver (DEN) and what is the distance?

    It takes around 2 hours 51 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, Volaris, Air Canada and Frontier Airlines.

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 Info | St. Louis to Denver

Cheapest nonstop flight price$26
Cheapest round-trip ticket price$36
Off-season for travelJanuary
Peak season for travelOctober
Flight distance1,253.6 km
Average flight time2 hours 51 minutes
Popular airlineFrontier Airlines