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Cheap flights from Ontario to Denver from C$ 309

YYZ — DEN
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Denver

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to Denver

Wed 25/119:50 a.m. -
1 stop17h 08m
Mon 30/118:59 p.m. -
2 stops47h 56m
Deal found 25/10C$ 548
Fri 13/114:15 p.m. -
3 stops22h 15m
Sat 14/118:55 p.m. -
1 stop16h 05m
Deal found 25/10C$ 551
Mon 16/114:35 p.m. -
1 stop17h 51m
Tue 24/1111:59 p.m. -
2 stops16h 16m
Deal found 26/10C$ 552
Thu 19/114:35 p.m. -
1 stop18h 01m
Wed 25/119:26 p.m. -
1 stop15h 34m
Deal found 27/10C$ 554
Thu 10/121:40 p.m. -
1 stop8h 19m
Tue 15/124:25 p.m. -
3 stops20h 55m
Deal found 26/10C$ 555
Thu 19/119:50 a.m. -
1 stop13h 15m
Wed 25/119:26 p.m. -
2 stops14h 20m
Deal found 27/10C$ 559
Mon 7/128:30 p.m. -
2 stops21h 13m
Thu 10/129:12 a.m. -
2 stops19h 40m
Deal found 25/10C$ 561
Mon 7/129:10 a.m. -
2 stops23h 19m
Thu 10/126:08 p.m. -
2 stops23h 47m
Deal found 25/10C$ 562
Mon 16/111:00 p.m. -
2 stops21h 22m
Tue 24/116:45 a.m. -
1 stop10h 54m
Deal found 26/10C$ 562
Thu 10/121:40 p.m. -
1 stop8h 19m
Thu 17/1210:29 a.m. -
1 stop9h 26m
Deal found 25/10C$ 564
Wed 9/1210:40 a.m. -
1 stop23h 33m
Fri 11/129:08 a.m. -
1 stop12h 39m
Deal found 26/10C$ 565
Wed 18/119:50 a.m. -
1 stop25h 50m
Mon 23/117:50 p.m. -
1 stop9h 01m
Deal found 26/10C$ 566

Find flight deals from Ontario to Denver

Round-trip from

C$ 548

One-way from

C$ 309

Popular in

October

Cheapest in

April

Average price

C$ 779

Good round-trip deal

C$ 714 or less

Good one-way deal

C$ 427 or less
25/11-30/11
  • 25/11-30/11
  • 3 total stops
  • 65h 04m total
  • Ontario to Denver
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10/11-31/12
  • 10/11-31/12
  • 1 total stop
  • 10h 08m total
  • Ontario to Denver
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Highest demand for flights based on searches. 3% potential increase in price (C$ 33 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 13 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Price to beat on a round-trip flight from Ontario to Denver Intl.
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Price to beat on a one-way flight from Ontario to Denver Intl.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Ontario to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoDenver

YYZ Toronto Pearson Intl - DEN Denver Intl

YYZDEN

Toronto Pearson Intl

Sat 12/12

2:25 p.m.-8:50 a.m.

3 stops44h 25m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 312

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Fri 26/2

10:20 a.m.-9:31 a.m.

2 stops25h 11m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 315

TorontoDenver

YYZ Toronto Pearson Intl - DEN Denver Intl

YYZDEN

Toronto Pearson Intl

Tue 24/11

11:30 a.m.-10:06 a.m.

2 stops24h 36m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 317

TorontoDenver

YTZ Toronto Island - DEN Denver Intl

YTZDEN

Toronto Island

Sun 13/12

1:10 p.m.-3:25 p.m.

1 stop28h 15m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 319

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Mon 14/12

5:30 a.m.-5:49 p.m.

3 stops38h 19m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 320

TorontoDenver

YYZ Toronto Pearson Intl - DEN Denver Intl

YYZDEN

Toronto Pearson Intl

Tue 17/11

2:20 p.m.-9:02 a.m.

2 stops20h 42m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 322

TorontoDenver

YYZ Toronto Pearson Intl - DEN Denver Intl

YYZDEN

Toronto Pearson Intl

Wed 18/11

2:20 p.m.-9:02 a.m.

2 stops20h 42m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 322

OttawaDenver

YOW Ottawa - DEN Denver Intl

YOWDEN

Ottawa

Mon 1/3

8:40 a.m.-7:08 a.m.

3 stops24h 28m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 323

TorontoDenver

YYZ Toronto Pearson Intl - DEN Denver Intl

YYZDEN

Toronto Pearson Intl

Mon 14/12

7:35 a.m.-7:55 p.m.

2 stops14h 20m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 333

TorontoDenver

YYZ Toronto Pearson Intl - DEN Denver Intl

YYZDEN

Toronto Pearson Intl

Thu 10/12

5:25 p.m.-9:04 a.m.

2 stops17h 39m

Denver Intl

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 336

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/10

Showing 1-10 of 58 resultsSorted by cheapest first
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Best time to book a flight from Ontario to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Ontario with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Ontario to Denver

What is the cheapest month to book a flight from Region of Ontario to Denver?

Currently, September is the cheapest month in which you can book a flight from Region of Ontario to Denver (average of C$ 663). Flying from Region of Ontario to Denver in January is currently the most expensive (average of C$ 933). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ON to DEN?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Denver as you normally would.

How much does it cost to fly round-trip from Region of Ontario to Denver?

Airfare is below average for this route at the moment.
Region of Ontario to Denver flights typically cost between C$ 634 and C$ 829 in November.
The cheapest round-trip price found within the last 5 days was C$ 548 on Multiple Airlines (25 Nov-30 Nov).

How far ahead should I book a flight from Region of Ontario to Denver?

The best time to book flights from Region of Ontario to Denver is 68 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

  • What airport do you fly into for flights to Denver from Ontario?

    If you book a flight to Denver from Ontario, you will be flying to Denver Intl, which is the city’s only airport. Denver Intl (DEN) is located 29.7 km from the centre of Denver.

  • How long is the flight from Region of Ontario to Denver?

    A quick flight from Region of Ontario to Denver can take about 7h 25m. Delta provides one of the quickest options available for as low as C$ 699. Airlines will cover a distance of 2111 km. This flight may include one or multiple stops.

  • What are the most popular routes from Region of Ontario to Denver?

    Most travellers choose Toronto Pearson Intl - Denver Intl, Montreal Pierre Elliott Trudeau Intl - Denver Intl or Toronto Island - Denver Intl when deciding on the best route from Region of Ontario to Denver.

  • What are the most reliable airlines from Region of Ontario to Denver?

    Before booking your flight to Denver from Region of Ontario, check out the most reliable airlines to get you to your destination on time: Air Canada (71%), United Airlines (70%), Brussels Airlines( 47%).

  • What are the cheapest flights from Region of Ontario to Denver?

    On average you can expect to pay C$ 1,240 for a flight from Region of Ontario to Denver. The cheapest flight overall is C$ 370 while the most popular route, (Toronto Pearson Intl - Denver Intl) is currently priced at C$ 450.

  • Can I find deals for flights from Ontario to Denver that include hotel bookings?

    Yes. In addition to deals on Ontario to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Denver.

  • Can I find deals for business class flights from Ontario to Denver?

    Yes. Cheapflights offers flight deals from Ontario to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Region of Ontario to Denver?

    Currently, September is the cheapest month in which you can book a flight from Region of Ontario to Denver (average of C$ 663). Flying from Region of Ontario to Denver in January is currently the most expensive (average of C$ 933). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Denver?

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Black Hawk

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Top 3 airlines flying from Ontario to Denver

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 402AverageC$ 800FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 409AverageC$ 454FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 515AverageC$ 787FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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How does Cheapflights help users find flights from Ontario to Denver?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ontario to Denver. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Denver?

Cheapflights helps you find that perfect flight to Denver from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Ontario to Denver with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario to Denver flexibly with Cheapflights today.

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Not ready to book yet? You can track prices for flights from Ontario to Denver on Cheapflights with our Price Alert feature and get notified when better prices are available.

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