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 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.
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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.
The cheapest one-way flight from Denver to Ontario departs on 05/15/2025, is operated by Frontier Airlines and costs $33
The cheapest roundtrip flight from Denver to Ontario departs on 05/18/2025, is operated by Frontier Airlines and costs $74
Fastest flight from Denver to Ontario takes 2h 21m
There are direct flights on this route 4 days a week: Su, Tu, Th, and Sa
The distance between Denver and Ontario is 1289km (799 miles). There are 69 direct flights from Denver to Ontario. The time difference between Denver and Ontario is 1h . Flights from Denver begin at 7:40 AM. The latest flight from Denver departs at 10:45 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.
We couldn't find any special offers for flights from Denver to Ontario
Denver — Los Angeles
06/26/2025
Departure date
Direct flight
WN1905
Starting at $157
Denver — Los Angeles
04/19/2025
Departure date
Direct flight
UA1368
Starting at $203
Denver — Los Angeles
04/28/2025
Departure date
Direct flight
AA4934
Starting at $235
Denver — Ontario
04/20/2025
Departure date
Direct flight
F91499
Starting at $113
Denver — Ontario
04/22/2025
Departure date
Direct flight
F91499
Starting at $199
Denver — Ontario
04/25/2025
Departure date
Direct flight
WN3040
Starting at $230
Denver — Ontario
04/27/2025
Departure date
Direct flight
UA2213
Starting at $416
The cheapest flight ticket from Denver to Ontario according to data for the last 48 hours costs $33
Often the best time to buy tickets from Denver to Ontario is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Denver to Ontario can be found flying in these months: May.
The fastest flights from Denver to Ontario start from 2 hours 21 minutes in the air.
The following airlines operate direct flights on the route Denver — Ontario: Southwest Airlines, United Airlines, American Airlines
