Direct flights from Denver to Ontario DEN → ONT

Frontier Airlines, Southwest Airlines and United Airlines fly nonstop from Denver (DEN) to Ontario (ONT), several times daily. The flight takes about 2h 11m and covers 818 miles (1,316 km). Arrivals run on time 80.3% at DEN and 78.9% at ONT — 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

More nonstops from Denver

DEN → SLC Salt Lake City 7 airlines DEN → ORD Chicago 6 airlines DEN → SEA Seattle 6 airlines DEN → CVG Cincinnati 5 airlines DEN → PHL Philadelphia 5 airlines DEN → PHX Phoenix 5 airlines DEN → ATL Atlanta 4 airlines DEN → ICT Wichita 4 airlines

Frequently asked questions

Is there a direct flight from Denver to Ontario?

Yes, Frontier Airlines, Southwest Airlines and 1 more airline operate nonstop flights from Denver (DEN) to Ontario (ONT).

Which airlines fly direct from Denver to Ontario?

Frontier Airlines, Southwest Airlines, United Airlines operate nonstop flights from Denver to Ontario.

How long is the flight from Denver to Ontario?

The nonstop flight from Denver to Ontario takes ~2h 11m (approximately 1316 km).

How often do direct flights operate from Denver to Ontario?

Nonstop flights from Denver to Ontario operate multiple daily.

What is the on-time performance for flights from Denver to Ontario?

Arrivals run on time 80.3% at DEN and 78.9% at ONT — BTS data for the last three months, counting arrivals within 15 minutes of schedule.

Explore More

DEN All direct flights from Denver ONT All direct flights from Ontario ONT → DEN Return: Ontario to Denver

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