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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Matching outbound flights35 of 35
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- August 9 – 15, 2026
- August 16 – 22, 2026
- August 23 – 29, 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)
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 8 hours 2 minutes. For the quickest trip, a nonstop flight is usually the most comfortable choice.
Yes, there are nonstop flights from Denver to St. Louis, averaging around 7 to 8 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.
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 Portland-Oregon). 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.
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.
From Denver to St. Louis, there are on average around 7 to 8 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.
From Denver to St. Louis, there are around 53 to 54 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.
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.
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.