- Cheapest roundtrip flight
- from€454
- Fastest flight
- non-stop flights
- 59x / week
- Flight distance
- 1,237 km
- Time difference
- Most popular airlines
- Southwest Airlines
- United Airlines
- Frontier Airlines
- Southwest Airlines
Flight schedule from Denver (DEN) to St. Louis (STL)
Select a travel date in the flight schedule for the route from Denver (DEN) to St. Louis (STL) and compare affordable flight deals.
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- Aug 30 – Sep 5, 2026
- September 6 – 12, 2026
- September 13 – 19, 2026
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Tips and tricks to help you find cheap flights from Denver to St. Louis
Favorite airline: Frontier Airlines
Flight tickets on the route Denver – St. Louis are most frequently booked with Frontier Airlines.
Frontier Airlines
62 %
United Airlines
38 %
Important flight information
Frequently Asked Questions (FAQ)
How long is the flight from Denver to St. Louis?
A nonstop flight from Denver to St. Louis typically takes around 2 hours. If you choose a connecting flight, allow more travel time. Typical one-stop itineraries take around 30 hours 26 minutes. For the quickest trip, a nonstop flight is usually the most comfortable choice.
Are there nonstop flights from Denver to St. Louis?
Yes, there are nonstop flights from Denver to St. Louis, averaging around 8 to 9 flights per day, operated by, among others, Southwest, United Airlines and Frontier Airlines. If you want to fly without a layover, it is worth filtering specifically for nonstop flights when searching.
Which airlines fly from Denver to St. Louis?
Direct flights from Denver to St. Louis are operated by, among others, Southwest, United Airlines and Frontier Airlines. Connecting flights with one stop are also available, for example with Alaska Airlines (via Seattle-Tacoma, Portland-Oregon) and American Airlines (via Dallas). If travel time matters to you, a direct flight is usually the most convenient option. Connecting flights often give you more choice of departure times and airlines.
On which days are there nonstop flights from Denver to St. Louis?
Nonstop flights from Denver to St. Louis operate daily. The schedule may vary by season, so it is worth comparing several travel dates. If your preferred day does not have a nonstop flight, nearby departure days or short connecting flights may be a good alternative.
How many flights are there per day from Denver to St. Louis?
From Denver to St. Louis, there are on average around 8 to 9 flights per day. This usually means you have a good choice of departure times. If you are flexible, you can easily compare times, prices, and airlines.
How many flights per week are there from Denver to St. Louis?
From Denver to St. Louis, there are around 59 to 60 flights per week. This means you usually have connections available on several days and at various times. Beyond the price, it is worth comparing flight duration, airline, and any potential additional fees.
When does the first flight from Denver to St. Louis depart?
The earliest nonstop flight from Denver to St. Louis usually departs at 6:00 AM. The exact departure time may vary by day of the week and airline. Early flights are especially useful if you want to make the most of your arrival day in St. Louis.
When does the last flight from Denver to St. Louis depart?
The last nonstop flight from Denver to St. Louis usually departs at 10:05 PM. Late flights can be convenient if you want to travel after work or in the evening. Do check whether it is a nonstop flight, as a connecting itinerary could push the arrival time significantly later.