A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Ontario to Denver:
Ontario airports overview
Denver 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 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.
Alternative routes
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Cheapest one way flight
$47
Frontier Airlines
Direct flight
2h 17m
04/27/2025
The cheapest one-way flight from Ontario to Denver departs on 04/27/2025, is operated by Frontier Airlines and costs $47
Cheapest round trip flight
$111
Frontier Airlines
Direct flight
5h 13m
04/02/2025
The cheapest roundtrip flight from Ontario to Denver departs on 04/02/2025, is operated by Frontier Airlines and costs $111
The fastest flight
2h 15m
Fastest flight from Ontario to Denver takes 2h 15m
Direct flights
Several times a week
There are direct flights on this route 6 days a week: Su, Mo, Tu, We, Th, and Sa
Earliest flight
5:10 AM
Latest flight
8:11 PM
Direct flights count
52
Distance
1289km
Timezone difference
1h
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.
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
How much is the cheapest flight ticket from Ontario to Denver?
The cheapest flight ticket from Ontario to Denver according to data for the last 48 hours costs $47
When is the best time to buy air tickets on the route Ontario — Denver?
Often the best time to buy tickets from Ontario to Denver is 2 months before departure.
When is the cheapest time of year to fly from Ontario to Denver?
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.
How long does it take to fly from Ontario to Denver?
The fastest flights from Ontario to Denver start from 2 hours 15 minutes in the air.
Which airline can fly direct from Ontario to Denver?
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
