Helping travelers to find the best flight offers
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Ontario to Denver:
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
The cheapest one-way flight from Ontario to Denver departs on 04/27/2025, is operated by Frontier Airlines and costs $47
The cheapest roundtrip flight from Ontario to Denver departs on 04/02/2025, is operated by Frontier Airlines and costs $111
Fastest flight from Ontario to Denver takes 2h 15m
There are direct flights on this route 6 days a week: Su, Mo, Tu, We, Th, and Sa
The distance between Ontario and Denver is 1289km (799 miles). There are 52 direct flights from Ontario to Denver. The time difference between Ontario and Denver is 1h . Flights from Ontario begin at 5:10 AM. The latest flight from Ontario departs at 8:11 PM.
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Ontario to Denver. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
Below you will find a list of airlines operating flights on the Ontario — Denver route and the starting prices for flights of each specific airline on it.
A direct flight is the most convenient and comfortable way to fly from Ontario to Denver, despite the fact that sometimes flights with transfers can cost significantly less.
Starting at $57
Starting at $62
Unable to find information about the schedule of direct flights from
We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Ontario to Denver
Los Angeles — Denver
03/31/2025
Departure date
Direct flight
WN2362
Starting at $170
Los Angeles — Denver
04/15/2025
Departure date
Direct flight
F93156
Starting at $76
Los Angeles — Denver
05/11/2025
Departure date
Direct flight
WN1779
Starting at $78
Los Angeles — Denver
04/24/2025
Departure date
Direct flight
F93156
Starting at $67
Los Angeles — Denver
04/27/2025
Departure date
Direct flight
F94346
Starting at $47
Los Angeles — Denver
05/26/2025
Departure date
Direct flight
WN332
Starting at $120
Ontario — Denver
04/06/2025
Departure date
Direct flight
F91500
Starting at $91
Ontario — Denver
06/25/2025
Departure date
Direct flight
F91500
Starting at $189
Ontario — Denver
06/26/2025
Departure date
Direct flight
F91500
Starting at $187
The cheapest flight ticket from Ontario to Denver according to data for the last 48 hours costs $47
Often the best time to buy tickets from Ontario to Denver is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Ontario to Denver can be found flying in these months: March, May, November.
The fastest flights from Ontario to Denver start from 2 hours 15 minutes in the air.
The following airlines operate direct flights on the route Ontario — Denver: Southwest Airlines, Frontier Airlines
We couldn't find any special offers for flights from Ontario to Denver