Flights from St. Louis to Denver Starting at £15

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 St. Louis to Denver

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Cheapest flights

From price

Mar

23 2
2 9
9 16
16 23
23 30
Apr

30 6
6 13
13 20
20 27
May

27 4
4 11
11 18

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

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 date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much are flights from St. Louis (STL) to Denver (DEN) cost?

According to Trip.com's data, the lowest price is around £163.
How long is the flight from St. Louis (STL) to Denver (DEN)?

It takes about 3 hours 23 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 and United Airlines.
What's the most popular airline for direct flights from St. Louis (STL) to Denver (DEN)?

Frontier Airlines operates 1 direct flights from St. Louis (STL) to Denver (DEN).
How many airports in Denver (DEN)?

There are 1 airport(s) in Denver (DEN): Denver International Airport.

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

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 St. Louis to Denver. Book your flights at the right time and save more.

Book Early

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Compare Flight Prices

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Look Out for Deals

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Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

Flying during the week, early in the morning, or late at night can help save money.

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Flight Information from St. Louis to Denver

Cheapest direct flight price	£15
Cheapest return ticket price	£30
Off-season travel month	March
Peak season for travel	November
Flight distance	1,253.6km
Average flight time	3 hours 23 minutes
Popular airline	American Airlines