Direct flights from Ontario to Denver ONT → DEN
Frontier Airlines, Southwest Airlines and United Airlines fly nonstop from Ontario (ONT) to Denver (DEN). The flight takes about 2h 11m and covers 818 miles (1,316 km). Arrivals run on time 78.9% at ONT 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 Ontario to Denver?
Yes, Frontier Airlines, Southwest Airlines and 1 more airline operate nonstop flights from Ontario (ONT) to Denver (DEN).
Which airlines fly direct from Ontario to Denver?
Frontier Airlines, Southwest Airlines, United Airlines operate nonstop flights from Ontario to Denver.
How long is the flight from Ontario to Denver?
The nonstop flight from Ontario to Denver takes ~2h 11m (approximately 1316 km).
What is the on-time performance for flights from Ontario to Denver?
Arrivals run on time 78.9% at ONT and 80.3% at DEN — BTS data for the last three months, counting arrivals within 15 minutes of schedule.
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