On this page, you can find and buy flights from St. Louis to Denver. The distance between the cities is 1,282 km, and there are about 25 flights per week on this route.
Flights are operated by airlines such as Frontier, United Airlines, and Southwest Airlines. Ticket prices are constantly changing, so use the low-price calendar and price trend chart to find the best deals, and also learn how to get to St. Louis airport and how to get from Denver airport.
The table shows direct flights St. Louis → Denver on the selected date. The flight takes approximately 2 h 22 min. Regular flights are operated by United Airlines, Southwest Airlines and Frontier Airlines. Departures from Lambert-St. Louis International Airport airports, arrivals at Denver International Airport and Centennial 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 St. Louis — Denver by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from AED 225 in ,, and the most expensive are around AED 712 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.
St. Louis → Denver, average one-way price
| Month | Average price | Level | Month | Average price | Level | Month | Average price | Level |
|---|---|---|---|---|---|---|---|---|
| Jan | AED 683 | low | May | AED 847 | medium | Sep | AED 799 | medium |
| Feb | AED 731 | low | Jun | AED 1,006 | high | Oct | AED 683 | low |
| Mar | AED 823 | medium | Jul | AED 1,054 | high | Nov | AED 756 | low |
| Apr | AED 775 | medium | Aug | AED 914 | medium | Dec | AED 962 | high |
Some values are estimated based on seasonality.
The warmest month in Denver is July, with temperatures reaching up to 30.5°C, while the coldest weather and frequent precipitation occur in February, when temperatures can drop to -9°C.
The most budget-friendly flight options are available in August, with prices starting AED 116. The highest fares are recorded in April — starting AED 712, as well as at the beginning of the year, when the cost starts AED 674.
For a great compromise between weather and price, consider visiting in September or October. These months offer comfortable travel conditions, and the risk of hitting peak seasonal prices is lower.
Flights between these cities are provided by three key air carriers: Frontier Airlines, United Airlines, and Southwest Airlines. A total of about 25 direct flights per week are operated on the route, making it easy to find a convenient departure time. Check out the detailed schedule and flight options in the list of airlines below.
Flights St. Louis — Denver depart from Lambert-St. Louis International Airport and arrive at Denver International Airport and Centennial Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.
A direct flight on this route takes an average of 1 hour and 45 minutes, given the distance of 1,282 km.
Regular flights on this route are operated by Frontier, United Airlines, and Southwest Airlines.
Yes, there are about 25 direct flights per week on this route, providing a high frequency of non-stop travel.
Prices are constantly updated; you can see the best current fare in the price calendar block on this page.
To find the lowest prices, it is recommended to book seats 3–5 weeks before your trip and watch for low-cost carrier promotions.
Where travelers fly most — pick a route and check prices
