den-to-stl

 

The cheapest times to fly from DEN to STL are

  • January 1st to February 25th
  • July 30th to November 18th
  • December 3rd to December 16th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from DEN to STL is late October to early November. Prices can be as high as $557 for Sunday flights during mid June, or as low as $119 for Tuesday flights around late October to early November.

 

When to Fly to St. Louis

Flying from Denver, CO (DEN) to St. Louis, MO (STL) will usually cost between $128 to $426 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late October to early November with an average ticket price of $152. Due to high demand the most expensive time to fly is mid June, with an average price of $408. Planning your trip to low-cost times can easily save you $255 on economy flights and even more on first-class flights. Generally, any price below $251 can be considered a good price for a round-trip DEN to STL flight.

See below for a graph of average weekly prices for the DEN to STL route. All prices are for round-trip tickets in USD.

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DEN to STL Flight Prices

Compared to other flights, the DEN to STL flight is much cheaper than the average and costs much less than the average flight leaving from Denver. The average price per mile (for a direct flight) is $0.2, which is below average.

 

Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $84 (28%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $211. Return trip prices are from the STL to DEN flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

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Departure Day Prices

Return Trip Prices by Day

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Return Day Prices

 

Nonstop Flights and Layovers

Travelers looking to fly from DEN to STL can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 2 hour 22 minutes may be realistic.

 

Flight Questions Answered

Still have questions about flying from DEN to STL? We’ve got answers.

Which airlines fly this route?

You can find 10 major airlines flying this route most often: Alaska, American, Cape Air, Delta, Frontier, Qantas, Singapore Airlines, Southwest, Sun Country Airlines, United, and potentially more during busy seasons.

How far away is it from St Louis Lambert International Airport to Denver International Airport?

The distance between the two airports is roughly 768 miles or 1236 kilometers.

How long does it take to fly from DEN to STL?

The real-world flight time for a nonstop DEN to STL flight is about 2 hour 22 minutes.

How many flights go between Denver, CO and St. Louis, MO?

It depends on the day of the week and the date, but a typical day might have around 99 available flights from DEN to STL.

 

Airport Location Info

 

Departing Airport

Origination codeDEN
Origination airport nameDenver International Airport
CityDenver, CO
Countrythe United States
Latitude39.9
Longitude-104.7

Return Airport

Destination codeSTL
Destination airport nameSt Louis Lambert International Airport
CitySt. Louis, MO
Countrythe United States
Latitude38.7
Longitude-90.4

 

Late and Early Flight Data

Flights from DEN to STL tend to depart later than the average flight. According to our recently updated data, 40% of flights departed 5 or more minutes late, and 9% of flights left 5 or more minutes early. On average you can expect to leave STL heading for DEN about 17 minutes late. This does significantly impact arrival time, as the average landing time in St. Louis, MO is about 14 minutes late. The numbers below show a recent average of take-off times versus the scheduled departure flight:

  • Southwest: 15 minutes late
  • SkyWest: 31 minutes late
  • United: 11 minutes late
  • Frontier: 21 minutes late
  • Some airlines not reporting

 

Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.