Flights Denver → St. Louis
DEN → STL
How long is the flight from Denver to St. Louis?
The flight from Denver (DEN) to St. Louis (STL) takes 1h 37m on average. That is the median time recorded across 3 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
Route overview
The flight route from Denver to St. Louis has a punctuality rate of 75%, with an average delay of 13.2 minutes per flight. Over the past year, there have been 860 flights on this route using various aircraft types including Airbus A320 and A319, Canadair Regional Jet 700, Embraer 170, and Boeing 737-300.
Your rights on this US flight (DOT)
US flights have no statutory cash compensation for delays. Under the US DOT rules, if your flight is cancelled or significantly changed and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Amenities for controllable delays depend on each airline's contract of carriage.
US flight refund rules & checker →General information, not legal advice.
The Denver (DEN) → St. Louis (STL) route is operated by Frontier Airlines, United Airlines, Southwest Airlines. Across 2341 flights monitored in recent months, 69% arrived on time (within 15 min of schedule), with an average delay of 17 minutes. The cancellation rate is 0.90%. FlightGuard's average computed risk is 25.5/100 (medium), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At St. Louis the average ATFM delay is 5.5 minutes (main cause: atfm). Departing from Denver the average ATFM delay is 5.5 minutes.
Heading to St. Louis: what to expect in this direction
Flying from Denver (DEN) to St. Louis (STL) heads east for about 1,236 km, a flight time of roughly 1h 37m.
Departures from Denver on this leg cluster in the overnight window: about 38% of DEN-STL flights take off then.
Air-traffic congestion: departing Denver the average ATFM delay is 5.5 min (atfm); arriving into St. Louis it is 5.5 min (atfm).
Across 2,341 tracked DEN-STL flights, 69% left on time with an average delay of 17 min and a 0.9% cancellation rate.
Route facts
Flights on this route
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| United Airlines (UA) | 83% | 5 min | 1.3% |
| Southwest Airlines (WN) | 75% | 5 min | 0.3% |
| Frontier Airlines (F9) | 74% | 11 min | 1.3% |
Airlines operating DEN-STL
Airports
Frequently asked questions about DEN-STL
The flight from Denver (DEN) to St. Louis (STL) takes 1h 37m on average. That is the median time recorded across 3 scheduled flights on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
On the Denver (DEN) -> St. Louis (STL) route, on-time performance is 69% with an average delay of 17 minutes, based on 2341 tracked flights.
The cancellation rate on Denver-St. Louis is 0.90% across 2341 monitored flights.
The route is operated by 3 airlines: Frontier Airlines, United Airlines, Southwest Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at St. Louis, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
US flights have no statutory cash compensation for delays. Under US DOT rules, if the airline cancels or significantly changes your flight and you decline rebooking, you're owed an automatic refund of the unused ticket. The tarmac-delay limit is 3 hours (domestic) / 4 hours (international). Meals or hotels for controllable delays depend on each airline's contract of carriage.
