$127 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 2/9. 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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Everything you should know

Cheapest round-trip
$342
Overall average: $589
WestJet
Wed 5/20Tue 5/26
YOW - DEN • 1 stop
Cheapest non-stop
$379
Typical prices: $429-$621
Air Canada
Fri 1/23Sun 1/25
YYZ - DEN • Non-stop
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Flight Deals
Useful Info
Flight Deals

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

Wed, May 20 - Tue, May 26
WestJet Logo
3:45 pm - 11:25 am
YOW
-
DEN
21h 40m1 stop
WestJet Logo
12:15 pm - 12:40 am
DEN
-
YOW
10h 25m1 stop
$342WestJet
Sun, May 24 - Sat, May 30
WestJet Logo
6:10 pm - 11:25 am
YHM
-
DEN
19h 15m1 stop
WestJet Logo
12:15 pm - 5:10 pm
DEN
-
YHM
26h 55m1 stop
$347WestJet
Fri, Jan 23 - Thu, Jan 29
Multiple Airlines Logo
7:00 am - 10:22 am
YOW
-
DEN
29h 22m2 stops
Multiple Airlines Logo
10:46 am - 6:35 pm
DEN
-
YOW
29h 49m1 stop
$361Multiple Airlines
Tue, Mar 24 - Wed, Apr 1
Multiple Airlines Logo
8:00 am - 12:38 am
YUL
-
DEN
18h 38m2 stops
Multiple Airlines Logo
4:25 pm - 4:25 pm
DEN
-
YUL
22h 00m1 stop
$362Multiple Airlines
Sun, Feb 1 - Sun, Feb 8
Alaska Airlines Logo
4:45 pm - 12:38 pm
YYZ
-
DEN
21h 53m1 stop
Alaska Airlines Logo
7:00 am - 3:35 pm
DEN
-
YYZ
30h 35m1 stop
$367Alaska Airlines
Sun, Feb 1 - Sun, Feb 8
Alaska Airlines Logo
4:45 pm - 12:38 pm
YYZ
-
DEN
21h 53m1 stop
Alaska Airlines Logo
7:00 am - 3:35 pm
DEN
-
YYZ
30h 35m1 stop
$368Alaska Airlines
Wed, Feb 11 - Sat, Feb 14
American Airlines Logo
11:30 am - 3:19 pm
YYZ
-
DEN
5h 49m1 stop
American Airlines Logo
7:00 am - 9:29 pm
DEN
-
YYZ
12h 29m1 stop
$369American Airlines
Sat, Jan 10 - Tue, Jan 13
Air Canada Logo
1:00 pm - 7:55 pm
YYZ
-
DEN
8h 55m1 stop
Air Canada Logo
1:25 pm - 6:35 pm
DEN
-
YYZ
3h 10mnonstop
$370Air Canada
Fri, Jan 16 - Mon, Jan 19
Air Canada Logo
12:30 pm - 7:55 pm
YTZ
-
DEN
9h 25m1 stop
Air Canada Logo
11:15 am - 7:55 pm
DEN
-
YTZ
6h 40m1 stop
$371Air Canada
Mon, Jan 12 - Sun, Jan 18
American Airlines Logo
11:35 am - 3:16 pm
YYZ
-
DEN
5h 41m1 stop
American Airlines Logo
7:20 am - 6:20 pm
DEN
-
YYZ
9h 00m1 stop
$381American Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$127
Best time to beat the crowds but there is an average 30% increase in price.
Most popular time to fly with an average 6% 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 Airlines
YYZ
-
DEN
Aug 2024
Make sure to check the airline delay flights rate and if you have important commitments choose another airline.
JoshuaFlew with Air Canada
YYZ
-
DEN
Apr 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
Greenwood Village
Central City
Lone Tree
Wheat Ridge
Brighton
Limon
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)