Your next trip, last seen at €40
Lowest observedFrontier Airlines · Non-stop · One wayWhen to fly
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Short answer
We have seen Frontier Airlines fares from St Louis to Denver, non-stop. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare. Fare seen: €77 on 9 Sep 2026.
Short answer
We have seen Frontier Airlines fares from St Louis to Denver, non-stop. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare. Fare seen: €77 on 9 Sep 2026.
About this route
Explore the fares we observed from St Louis to Denver. Prices move often, so pick your dates to see the latest options.
- Route distance
- 1,279 km
- Reported fastest flight
- 2h 22m
- Airlines seen
- Frontier Airlines, Southwest Airlines, American Airlines, Southern Airways Express, United Airlines
- Alternative airports
- SUS, APA
Route-level information; individual journeys vary.
Published schedules report non-stop service with Frontier Airlines, Southwest Airlines. Check current timetables.
A clearer picture of your fare
Frequently asked
How much was a flight from St Louis to Denver?
A fare of €77 was seen on 9 Sep 2026. Fares change, so search your dates for the current price.
Are there direct flights from St Louis to Denver?
Yes. We have seen non-stop flights on this route, flown by Frontier Airlines, Southwest Airlines.
Which airlines fly from St Louis to Denver?
These are the carriers we have seen on the route: Frontier Airlines, Southwest Airlines, American Airlines, Southern Airways Express, United Airlines.
How long does the flight from St Louis to Denver take?
The average journey time across the 71 fares we observed is 8h 37m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed St Louis to Denver fares were non-stop?
39 of the 71 fares we observed were non-stop; the rest included at least one stop. That describes our observations, not every flight that operates.
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
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Recently observed fares. Prices may change.
Last checked: 9 Oct 2026