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Flights from Denver to St. Louis

Flight deals from Denver to St. Louis

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • Round-trip
  • One way

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

We monitor flight fares to help you find the best deals effortlessly

Cheapest flights
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  • 6 13
  • 13 20
  • 20 27

  • May

    27 4
  • 4 11
  • 11 18
  • 18 25

  • Jun

    25 1
  • 1 8
  • 8 15
  • 15 22
  • 22 29
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, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.
Frontier Airlines logo Frontier Airlines

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 NZD 575.

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

    It takes around 2 hours 19 minutes to fly from Denver (DEN) to St. Louis (STL).

  • 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, United Airlines, Volaris, Frontier Airlines and Air Canada.

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

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Denver to St. Louis. Book your flights at the right time and save more.
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 one-way flight price NZD 40
Cheapest round-trip ticket price NZD 104
Off-season for travel March
Peak season for travel June
Flight distance 1,253.6 km
Average flight time 2 hours 19 minutes
Popular airline Frontier Airlines

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