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Cheap flights from Ontario to Denver from C$ 187

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/1. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — DEN
14 ene. — 21 ene.1
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
Explore the most affordable flight options available from Ontario to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 diciembre 2025.

mar. 30/128:30 a.m.YYZ - DEN
Nonstop3h 53mMultiple Airlines
mié. 7/11:19 p.m.DEN - YYZ
1 stop15h 21mMultiple Airlines
Deal found 14/12C$ 570
mar. 30/127:10 a.m.YYZ - DEN
2 stops40h 39mMultiple Airlines
mar. 6/16:10 a.m.DEN - YYZ
1 stop11h 25mMultiple Airlines
Deal found 14/12C$ 633
mar. 30/128:30 a.m.YYZ - DEN
Nonstop3h 53mAir Canada
mar. 6/15:30 p.m.DEN - YYZ
Nonstop3h 11mAir Canada
Deal found 14/12C$ 650
mar. 30/128:30 a.m.YYZ - DEN
Nonstop3h 53mAir Canada
lun. 5/15:30 p.m.DEN - YYZ
Nonstop3h 11mAir Canada
Deal found 14/12C$ 665
mar. 30/127:40 p.m.YTZ - DEN
1 stop25h 29mMultiple Airlines
lun. 5/111:59 p.m.DEN - YTZ
2 stops14h 26mMultiple Airlines
Deal found 14/12C$ 680
lun. 29/125:25 p.m.YUL - DEN
Nonstop4h 30mAir Canada
lun. 12/111:15 a.m.DEN - YUL
Nonstop3h 43mAir Canada
Deal found 14/12C$ 705
mié. 31/128:50 a.m.YUL - DEN
2 stops9h 50mAir Canada
lun. 12/18:05 a.m.DEN - YUL
1 stop9h 20mAir Canada
Deal found 14/12C$ 715
mié. 31/128:50 a.m.YUL - DEN
2 stops9h 50mAir Canada
jue. 8/11:25 p.m.DEN - YUL
1 stop7h 57mAir Canada
Deal found 14/12C$ 724
lun. 29/125:25 p.m.YUL - DEN
Nonstop4h 30mAir Canada
jue. 1/18:05 a.m.DEN - YUL
1 stop9h 20mAir Canada
Deal found 14/12C$ 752
lun. 29/125:25 p.m.YUL - DEN
Nonstop4h 30mAir Canada
lun. 5/15:30 p.m.DEN - YUL
1 stop12h 12mAir Canada
Deal found 14/12C$ 764
lun. 29/125:25 p.m.YUL - DEN
Nonstop4h 30mAir Canada
vie. 9/15:30 p.m.DEN - YUL
2 stops11h 09mAir Canada
Deal found 14/12C$ 771
mié. 31/128:50 a.m.YUL - DEN
2 stops9h 50mAir Canada
lun. 5/15:30 p.m.DEN - YUL
1 stop12h 12mAir Canada
Deal found 14/12C$ 774

Find flight deals from Ontario to Denver

Keep the following information in mind while searching for Ontario to Denver flight deals. Data was last updated 15 diciembre 2025.

Round-trip from

C$ 424

One-way from

C$ 187

Popular in

December

Cheapest in

November

Average price

C$ 706

Good round-trip deal

C$ 599 or less

Good one-way deal

C$ 340 or less
12/1-19/1
  • 12/1-19/1
  • 3 total stops
  • 63h 58m total
  • Ontario to Denver
Search Deals
16/1
  • 16/1
  • 1 total stop
  • 16h 47m total
  • Ontario to Denver
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (C$ 3 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Ontario to Denver Intl.
Search Deals
Price to beat on a one-way flight from Ontario to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 15 diciembre 2025.
Use the filters below to find and compare flights from Ontario to Denver that are best for you.

Fly from

Ontario

Fly to

Denver

Route

Depart

Return

Price

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

jue. 29/1

9:30 a.m.-5:36 p.m.

1 stop10h 06m

Denver Intl

jue. 5/2

8:50 a.m.-12:25 a.m.

2 stops13h 35m

C$ 461

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

jue. 15/1

9:40 a.m.-12:55 a.m.

1 stop17h 15m

Denver Intl

lun. 19/1

11:59 p.m.-5:13 p.m.

1 stop15h 14m

C$ 498

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

jue. 29/1

2:50 p.m.-4:40 p.m.

Nonstop3h 50m

Denver Intl

jue. 5/2

1:25 p.m.-6:35 p.m.

Nonstop3h 10m

C$ 516

HamiltonDenver

YHM - DEN

YHMDEN

Hamilton

vie. 16/1

7:00 a.m.-11:07 p.m.

1 stop18h 07m

Denver Intl

lun. 19/1

9:00 a.m.-7:00 p.m.

2 stops32h 00m

C$ 519

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

dom. 18/1

4:45 p.m.-12:38 p.m.

1 stop21h 53m

Denver Intl

vie. 23/1

5:09 p.m.-3:35 p.m.

1 stop20h 26m

C$ 536

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

jue. 29/1

4:45 p.m.-10:53 a.m.

2 stops20h 08m

Denver Intl

jue. 5/2

12:34 p.m.-3:35 p.m.

2 stops25h 01m

C$ 538

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

vie. 9/1

4:45 p.m.-12:38 p.m.

1 stop21h 53m

Denver Intl

lun. 12/1

5:09 p.m.-3:35 p.m.

1 stop20h 26m

C$ 541

TorontoDenver

YTZ - DEN

YTZDEN

Toronto Island

jue. 29/1

12:30 p.m.-7:55 p.m.

1 stop9h 25m

Denver Intl

jue. 5/2

11:15 a.m.-9:35 p.m.

1 stop8h 20m

C$ 543

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

jue. 15/1

8:30 a.m.-10:23 a.m.

Nonstop3h 53m

Denver Intl

dom. 18/1

1:25 p.m.-6:35 p.m.

Nonstop3h 10m

C$ 549

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

dom. 11/1

8:00 a.m.-5:44 p.m.

1 stop11h 44m

Denver Intl

dom. 18/1

1:25 p.m.-6:35 p.m.

Nonstop3h 10m

C$ 556

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/12

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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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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, December is the cheapest month in which you can book a flight from Region of Ontario to Denver (average of C$ 297). Flying from Region of Ontario to Denver in May is currently the most expensive (average of C$ 406). 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?

Find hourly flight availability from Ontario to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 diciembre 2025.

It’s typically best to fly out from Region of Ontario to Denver in the evening. Doing so could potentially save you 20% on the flight price compared to flying at noon, which is usually more expensive.

Weekly flight availability from Region of Ontario to Denver

Explore weekly flight availability from Ontario to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 15 diciembre 2025.

The most flights from CAON to DEN are scheduled on a Monday (7 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (4 on average).

Related info for your journey

Find useful and relevant information for your journey from Ontario to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 3h 50m. Air Canada provides one of the quickest options available for as low as C$ 516. Airlines will cover a distance of 2111 km. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Region of Ontario to Denver one-way?

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as C$ 171. Users have also found prices from C$ 271 and C$ 306 on Air Canada and United Airlines, respectively.

  • 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: United Airlines (80%), Air Canada (79%), Austrian Airlines( 71%).

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

    On average you can expect to pay C$ 1,428 for a flight from Region of Ontario to Denver. The cheapest flight overall is C$ 252 while the most popular route, (Toronto Pearson Intl - Denver Intl) is currently priced at C$ 354.

  • 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, December is the cheapest month in which you can book a flight from Region of Ontario to Denver (average of C$ 297). Flying from Region of Ontario to Denver in May is currently the most expensive (average of C$ 406). 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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Golden
Westminster
Thornton

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Alternative routes for Ontario to Denver

See prices for flight routes from nearby airports that may be better suited for you.
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Pearson Intl to Colorado Springs flights
Ottawa to Colorado Springs flights
Pearson Intl to Vail flights
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Halifax to Denver flights
Kelowna to Denver flights
Pearson Intl to Durango flights
Vancouver Intl to Colorado Springs flights
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Pearson Intl to Montrose flights
Vancouver Intl to Grand Junction flights
Saskatoon to Denver flights
Winnipeg to Colorado Springs flights
Calgary to Colorado Springs flights
Calgary to Aspen flights
Hamilton to Denver flights
Pierre Elliott Trudeau Intl to Grand Junction flights
Prince George to Denver flights
St. John's to Denver flights
Victoria to Durango flights
Moncton to Denver flights
Pearson Intl to Gunnison flights
Windsor to Denver flights

Top 3 airlines flying from Ontario to Denver

Discover the top 3 airlines that operate flights from Ontario to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 15 diciembre 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 258AverageC$ 447FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 304AverageC$ 624FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 429AverageC$ 634FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

Can Cheapflights notify me if prices for flights from Ontario to Denver become cheaper?

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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