On this page, you can find and book flights for the Denver — St. Louis route. The 1,282 km flight operates regularly, with approximately 29 flights per week on this direction.
Flights are served by Frontier Airlines, United Airlines, and Southwest Airlines. Ticket prices are dynamic, so use the low-fare calendar to find the best deal and study the information on how to get to Denver Airport and how to get from St. Louis Airport.
The table shows direct flights Denver → St. Louis on the selected date. The flight takes approximately 2 h 7 min. Regular flights are operated by United Airlines, Southwest Airlines and Frontier Airlines. Departures from Denver International Airport and Centennial Airport airports, arrivals at Lambert-St. Louis International Airport.
For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.
Below is a calendar of the lowest flight ticket prices for Denver — St. Louis by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from AED 211 in ,, and the most expensive are around AED 714 in u. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.
Denver → St. Louis, average one-way price
| Month | Average price | Level | Month | Average price | Level | Month | Average price | Level |
|---|---|---|---|---|---|---|---|---|
| Jan | AED 478 | low | May | AED 625 | medium | Sep | AED 570 | medium |
| Feb | AED 515 | medium | Jun | AED 699 | high | Oct | AED 533 | low |
| Mar | AED 662 | high | Jul | AED 717 | high | Nov | AED 552 | medium |
| Apr | AED 589 | medium | Aug | AED 644 | medium | Dec | AED 681 | high |
Some values are estimated based on seasonality.
Weather conditions in St. Louis are hottest in July, when the average maximum reaches 31.4°C. The coldest month is January, with temperatures as low as -3.1°C, and peak precipitation occurs in March and May.
The most budget-friendly month to fly is August, when ticket prices start AED 208. Prices are significantly higher during the winter and spring: in March and April, minimum fares are recorded AED 704.
September is considered the optimal time for booking, as the weather is mild and airfares have not yet reached their winter peak. We recommend avoiding travel in December and January due to the highest cost of flight seats.
Three main airlines operate on the Denver — St. Louis route: United Airlines, Southwest Airlines, and Frontier Airlines. Direct flights are available daily, with United and Southwest offering the highest number of flights. There are about 29 departures per week, allowing for flexible travel planning. A detailed schedule and information for each airline are provided in the list below.
Flights Denver — St. Louis depart from Denver International Airport and Centennial Airport and arrive at Lambert-St. Louis International Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.
With a distance of 1,282 km between the cities, a direct flight takes an average of 1 hour 50 minutes. The exact time depends on the aircraft type and weather conditions.
Regular flights on this route are operated by United Airlines, Southwest Airlines, and the low-cost carrier Frontier Airlines.
Yes, there are about 29 direct flights per week on the route, providing a convenient choice of departure times throughout the day.
All flights from Denver (DEN) land at St. Louis Lambert International Airport (STL).
Ticket prices change constantly depending on demand and how far in advance you book. You can check the current minimum for your dates in the low-fare calendar on this page.
Where travelers fly most — pick a route and check prices
