A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Denver to Ontario:
Denver airports overview
Ontario airports overview
Frequently asked questions (FAQ)
Answers to questions about the route that travelers are most interested in.
Special offers and sales on air tickets from Denver to Ontario
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.
Alternative routes
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Cheapest one way flight
$13
Frontier Airlines
Direct flight
2h 38m
03/26/2025
The cheapest one-way flight from Denver to Ontario departs on 03/26/2025, is operated by Frontier Airlines and costs $13
Cheapest round trip flight
$48
Frontier Airlines
Direct flight
4h 40m
08/06/2025
The cheapest roundtrip flight from Denver to Ontario departs on 08/06/2025, is operated by Frontier Airlines and costs $48
The fastest flight
2h 26m
Fastest flight from Denver to Ontario takes 2h 26m
Direct flights
Several times a week
There are direct flights on this route 2 days a week: Su and We
Earliest flight
8:07 AM
Latest flight
10:15 PM
Direct flights count
52
Distance
1289km
Timezone difference
1h
The distance between Denver and Ontario is 1289km (799 miles).There are 52 direct flights from Denver to Ontario.The time difference between Denver and Ontario is 1h .Flights from Denver begin at 8:07 AM.The latest flight from Denver departs at 10:15 PM.
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 Denver to Ontario
Below you will find a list of airlines operating flights on the Denver — Ontario route and the starting prices for flights of each specific airline on it.
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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 Denver to Ontario. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
A direct flight is the most convenient and comfortable way to fly from Denver to Ontario, despite the fact that sometimes flights with transfers can cost significantly less.
There appear to be no direct flights from Denver to Ontario at this time.... Well, or something went wrong on our side and we couldn't find anything
We couldn't find any special offers for flights from Denver to Ontario
March 2025
Lowest price
on average:
$24
June 2025
Highest price
on average:
$73
How much is the cheapest flight ticket from Denver to Ontario?
The cheapest flight ticket from Denver to Ontario according to data for the last 48 hours costs $13
When is the best time to buy air tickets on the route Denver — Ontario?
Often the best time to buy tickets from Denver to Ontario is 2 months before departure.
When is the cheapest time of year to fly from Denver to Ontario?
Based on statistics over the past years, the lowest prices for flights from Denver to Ontario can be found flying in these months: March, February, May.
How long does it take to fly from Denver to Ontario?
The fastest flights from Denver to Ontario start from 2 hours 26 minutes in the air.
Which airline can fly direct from Denver to Ontario?
The following airlines operate direct flights on the route Denver — Ontario:
