Cheapest one way flight
$61
Frontier Airlines
1 transfer
4h 16m
11/11/2025
The cheapest one-way flight from Ontario to Denver departs on 11/11/2025, is operated by Frontier Airlines and costs $61
Cheapest round trip flight
$183
Frontier Airlines
Direct flight
23h 9m
10/19/2025
The cheapest roundtrip flight from Ontario to Denver departs on 10/19/2025, is operated by Frontier Airlines and costs $183
The fastest flight
2h 11m
Fastest flight from Ontario to Denver takes 2h 11m
Direct flights
Several times a week
There are direct flights on this route 3 days a week: Su, We, and Sa
Earliest flight
5:05 AM
Latest flight
6:27 PM
Direct flights count
65
Distance
1289km
Timezone difference
1h
The distance between Ontario and Denver is 1289km (799 miles). There are 65 direct flights from Ontario to Denver. The time difference between Ontario and Denver is 1h. Flights from Ontario begin at 5:05 AM. The latest flight from Ontario departs at 6:27 PM
