$146 Find Cheap Flights from Ontario to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Denver departing on 1/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Ontario to Denver

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Denver that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Denver

Tue, Jan 20 - Mon, Jan 26
American Airlines Logo
3:52 pm - 10:49 amYUL-DEN
20h 57m1 stop
American Airlines Logo
4:30 pm - 3:08 pmDEN-YUL
20h 38m1 stop
$328American Airlines
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Tue, Jan 20 - Thu, Jan 29
Multiple Airlines Logo
8:00 am - 10:20 amYUL-DEN
28h 20m2 stops
Multiple Airlines Logo
11:59 pm - 12:30 amDEN-YUL
22h 31m1 stop
$337Multiple Airlines
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Tue, Dec 9 - Tue, Jan 6
Alaska Airlines Logo
4:45 pm - 6:03 pmYYZ-DEN
27h 18m1 stop
Alaska Airlines Logo
8:22 pm - 3:35 pmDEN-YYZ
17h 13m1 stop
$350Alaska Airlines
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Thu, Nov 20 - Wed, Nov 26
Air Canada Logo
12:30 pm - 7:55 pmYTZ-DEN
9h 25m1 stop
Air Canada Logo
11:15 am - 9:35 pmDEN-YTZ
8h 20m1 stop
$352Air Canada
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Thu, Nov 20 - Wed, Nov 26
Air Canada Logo
5:25 pm - 7:55 pmYUL-DEN
4h 30mnonstop
Air Canada Logo
11:15 am - 4:58 pmDEN-YUL
3h 43mnonstop
$353Air Canada
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Tue, Dec 9 - Tue, Jan 6
Alaska Airlines Logo
4:45 pm - 2:46 pmYYZ-DEN
24h 01m1 stop
Alaska Airlines Logo
6:48 pm - 3:35 pmDEN-YYZ
18h 47m2 stops
$360Alaska Airlines
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Thu, Jan 15 - Mon, Jan 19
United Airlines Logo
4:10 pm - 6:10 pmYYZ-DEN
4h 00mnonstop
United Airlines Logo
4:15 pm - 11:59 pmDEN-YYZ
5h 44m1 stop
$409United Airlines
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Sat, Jan 17 - Tue, Jan 27
United Airlines Logo
6:00 am - 4:12 pmYUL-DEN
12h 12m1 stop
United Airlines Logo
6:00 am - 6:40 pmDEN-YUL
10h 40m1 stop
$419United Airlines
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Sat, Jan 17 - Mon, Jan 26
Delta Logo
2:15 pm - 10:25 amYUL-DEN
22h 10m1 stop
Delta Logo
7:00 am - 11:12 pmDEN-YUL
14h 12m2 stops
$422Delta
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Thu, Dec 4 - Mon, Dec 8
Delta Logo
9:35 am - 8:37 pmYUL-DEN
13h 02m1 stop
Delta Logo
12:04 pm - 12:00 pmDEN-YUL
21h 56m2 stops
$424Delta
Find Deal

Everything you should know

Cheapest round-trip
$328
Typical prices: $619-$806
American Airlines
Tue 1/20Mon 1/26
YUL - DEN • 1 stop
Cheapest non-stop
$353
Typical prices: $503-$868
Air Canada
Thu 11/20Wed 11/26
YUL - DEN • Non-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$146
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly with an average 8% increase in price.
Flight from Toronto Pearson Airport to Denver

Flights from Ontario to Denver: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Ontario to Denver 
Learn how KAYAK collects reviews and tips from users.
F.Flew with United AirlinesYYZ-DENAug 2024
Make sure to check the airline delay flights rate and if you have important commitments choose another airline.
JoshuaFlew with Air CanadaYYZ-DENApr 2024
Toronto's customs was one of the faster experiences I've had. They opened four more lanes to expedite the process when the lane got too long, to ensure we would all get through within around 15 minutes. The public transportation within the city is also top notch, in my opinion.

FAQs for booking flights from Ontario to Denver

  • How does KAYAK find such low prices on flights from Ontario to Denver?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Denver.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Denver?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Denver?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Denver with an airline and back to Ontario with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Denver?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Denver from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Dillon
Westminster
Lakewood
Broomfield
Englewood
Central City
Greenwood Village
Lone Tree
Wheat Ridge
Limon
Brighton
Fort Morgan
Evergreen
Erie

Everything you need to know for your flight to Denver

Information on the airport you'll fly into in Denver

Denver (DEN)

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