Direct flights from St Louis to Denver STL → DEN
Frontier Airlines, Southwest Airlines and United Airlines fly nonstop from St Louis (STL) to Denver (DEN). The flight takes about 2h 5m and covers 768 miles (1,236 km). Arrivals run on time 76.7% at STL and 80.3% at DEN — BTS data for the last three months, counting arrivals within 15 minutes of schedule.
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Frontier Airlines
F9
Southwest Airlines
WN
United Airlines
UA
Frequently asked questions
Is there a direct flight from St Louis to Denver?
Yes, Frontier Airlines, Southwest Airlines and 1 more airline operate nonstop flights from St Louis (STL) to Denver (DEN).
Which airlines fly direct from St Louis to Denver?
Frontier Airlines, Southwest Airlines, United Airlines operate nonstop flights from St Louis to Denver.
How long is the flight from St Louis to Denver?
The nonstop flight from St Louis to Denver takes ~2h 5m (approximately 1236 km).
What is the on-time performance for flights from St Louis to Denver?
Arrivals run on time 76.7% at STL and 80.3% at DEN — BTS data for the last three months, counting arrivals within 15 minutes of schedule.
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