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Cheap flights from Ontario to Denver from C$ 200

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Denver departing on 9/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Ontario to Denver

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
3:52 p.m. - 10:49 a.m.YUL-DEN
20h 57m1 stop
American Airlines Logo
4:30 p.m. - 3:08 p.m.DEN-YUL
20h 38m1 stop
C$ 412American Airlines
Find Deal
Mon, 26 Jan - Fri, 30 Jan
Multiple Airlines Logo
5:10 p.m. - 7:09 p.m.YUL-DEN
27h 59m1 stop
Multiple Airlines Logo
11:59 p.m. - 8:14 p.m.DEN-YUL
18h 15m2 stops
C$ 418Multiple Airlines
Find Deal
Tue, 9 Dec - Sun, 11 Jan
Alaska Airlines Logo
4:45 p.m. - 12:38 p.m.YYZ-DEN
21h 53m1 stop
Alaska Airlines Logo
7:00 a.m. - 3:35 p.m.DEN-YYZ
30h 35m1 stop
C$ 519Alaska Airlines
Find Deal
Sun, 1 Feb - Sun, 8 Feb
Air Canada Logo
10:10 a.m. - 7:55 p.m.YYZ-DEN
11h 45m2 stops
Air Canada Logo
7:05 p.m. - 6:47 a.m.DEN-YYZ
9h 42m1 stop
C$ 522Air Canada
Find Deal
Thu, 27 Nov - Wed, 3 Dec
Alaska Airlines Logo
4:45 p.m. - 11:35 p.m.YYZ-DEN
32h 50m1 stop
Alaska Airlines Logo
7:00 a.m. - 3:35 p.m.DEN-YYZ
30h 35m1 stop
C$ 523Alaska Airlines
Find Deal
Sun, 1 Feb - Sun, 8 Feb
Air Canada Logo
1:00 p.m. - 7:55 p.m.YYZ-DEN
8h 55m1 stop
Air Canada Logo
5:30 p.m. - 10:41 p.m.DEN-YYZ
3h 11mdirect
C$ 532Air Canada
Find Deal
Thu, 27 Nov - Sun, 30 Nov
Delta Logo
9:35 a.m. - 8:37 p.m.YUL-DEN
13h 02m1 stop
Delta Logo
5:45 p.m. - 8:45 a.m.DEN-YUL
13h 00m1 stop
C$ 569Delta
Find Deal
Thu, 4 Dec - Mon, 8 Dec
Delta Logo
9:35 a.m. - 8:37 p.m.YUL-DEN
13h 02m1 stop
Delta Logo
5:45 p.m. - 8:45 a.m.DEN-YUL
13h 00m1 stop
C$ 570Delta
Find Deal
Thu, 4 Dec - Mon, 8 Dec
United Airlines Logo
2:15 p.m. - 10:18 a.m.YOW-DEN
22h 03m2 stops
United Airlines Logo
5:42 p.m. - 5:12 p.m.DEN-YOW
21h 30m2 stops
C$ 789United Airlines
Find Deal
Fri, 23 Jan - Tue, 27 Jan
United Airlines Logo
6:20 a.m. - 6:20 p.m.YOW-DEN
14h 00m2 stops
United Airlines Logo
6:00 a.m. - 9:18 p.m.DEN-YOW
13h 18m2 stops
C$ 855United Airlines
Find Deal
Tue, 16 Dec - Thu, 25 Dec

Air Canada flights from Region of Ontario to Denver

Our best Air Canada deals on Region of Ontario to Denver flight tickets
Air Canada
27 Nov
YYZ10:10 a.m.Toronto Pearson Intl
11h 45m
2 stops
DEN7:55 p.m.Denver Intl
3 Dec
DEN7:05 p.m.Denver Intl
9h 42m
1 stop
YYZ6:47 a.m.Toronto Pearson Intl
C$ 522
Find similar
Air Canada
27 Nov
YYZ1:00 p.m.Toronto Pearson Intl
8h 55m
1 stop
DEN7:55 p.m.Denver Intl
30 Nov
DEN5:30 p.m.Denver Intl
3h 11m
YYZ10:41 p.m.Toronto Pearson Intl
C$ 532
Find similar
Air Canada
26 Nov
YTZ12:30 p.m.Toronto Island
9h 25m
1 stop
DEN7:55 p.m.Denver Intl
28 Jan
DEN11:15 a.m.Denver Intl
6h 40m
1 stop
YTZ7:55 p.m.Toronto Island
C$ 540
Find similar

American Airlines flights from Region of Ontario to Denver

Our best American Airlines deals on Region of Ontario to Denver flight tickets
American Airlines
26 Jan
YUL3:52 p.m.Montreal Pierre Elliott Trudeau Intl
20h 57m
1 stop
DEN10:49 a.m.Denver Intl
30 Jan
DEN4:30 p.m.Denver Intl
20h 38m
1 stop
YUL3:08 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 412
Find similar
American Airlines
23 Jan
YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl
7h 49m
1 stop
DEN12:49 p.m.Denver Intl
27 Jan
DEN3:14 p.m.Denver Intl
21h 54m
1 stop
YUL3:08 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 571
Find similar
American Airlines
18 Dec
YOW9:10 a.m.Ottawa
16h 16m
2 stops
DEN11:26 p.m.Denver Intl
26 Dec
DEN5:44 p.m.Denver Intl
21h 07m
2 stops
YOW4:51 p.m.Ottawa
C$ 904
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Region of 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, momondo users made 96,600 searches. Data last updated 6 November 2025.
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

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Mon 26/1

3:52 p.m.-10:49 a.m.

1 stop20h 57m

Denver Intl

Fri 30/1

4:30 p.m.-3:08 p.m.

1 stop20h 38m

C$ 412

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Tue 9/12

5:10 p.m.-7:09 p.m.

1 stop27h 59m

Denver Intl

Sun 11/1

11:59 p.m.-8:14 p.m.

2 stops18h 15m

C$ 418

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Sun 1/2

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

1 stop21h 53m

Denver Intl

Sun 8/2

7:00 a.m.-3:35 p.m.

1 stop30h 35m

C$ 519

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Thu 27/11

10:10 a.m.-7:55 p.m.

2 stops11h 45m

Denver Intl

Wed 3/12

7:05 p.m.-6:47 a.m.

1 stop9h 42m

C$ 522

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Sun 1/2

4:45 p.m.-11:35 p.m.

1 stop32h 50m

Denver Intl

Sun 8/2

7:00 a.m.-3:35 p.m.

1 stop30h 35m

C$ 523

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Thu 27/11

1:00 p.m.-7:55 p.m.

1 stop8h 55m

Denver Intl

Sun 30/11

5:30 p.m.-10:41 p.m.

Nonstop3h 11m

C$ 532

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Thu 4/12

9:35 a.m.-8:37 p.m.

1 stop13h 02m

Denver Intl

Mon 8/12

5:45 p.m.-8:45 a.m.

1 stop13h 00m

C$ 569

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Thu 4/12

9:35 a.m.-8:37 p.m.

1 stop13h 02m

Denver Intl

Mon 8/12

5:45 p.m.-8:45 a.m.

1 stop13h 00m

C$ 570

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Fri 23/1

2:15 p.m.-10:18 a.m.

2 stops22h 03m

Denver Intl

Tue 27/1

5:42 p.m.-5:12 p.m.

2 stops21h 30m

C$ 789

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Tue 16/12

6:20 a.m.-6:20 p.m.

2 stops14h 00m

Denver Intl

Thu 25/12

6:00 a.m.-9:18 p.m.

2 stops13h 18m

C$ 855

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Denver from

How to get the cheapest flight ticket from Region of Ontario to Denver

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Denver?

In general, November is the cheapest month to fly from Region of Ontario to Denver. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 591. If you aren’t able to travel during the month of November, then book flights to Denver from Region of Ontario during August instead. Flights to Denver in August, while not as cheap as those in November, still average around C$ 600.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart from Region of Ontario to Denver is on a Friday. Travellers who choose to depart for Denver on a Friday will often find tickets for as low as C$ 723. On the other hand, Monday is the most expensive day to depart from Region of Ontario because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,070.

What is the cheapest time of day to depart on your flight to Denver?

Our most recent data shows that the best time of day to fly to Denver is in the evening. Flights from Region of Ontario to Denver during this time can be as low as C$ 643. Try not to purchase tickets in the morning because they tend to be around C$ 832. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Ontario to Denver Intl flight route?

Fly from Toronto Pearson Intl to Denver Intl for the best Ontario - Denver Intl flight prices

How far in advance should I book a flight to Denver?

You are more likely to see cheaper flights to Denver from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around C$ 646 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Region of Ontario for as low as C$ 580 on momondo.

What cabin class options are available on Ontario to Denver Intl flights?

There are 4 cabin classes available to choose from on Ontario to Denver Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Region of Ontario to Denver flights?

You could potentially save up to 26% on your flight if you consider stops on a Region of Ontario to Denver flight.

Cheap Region of Ontario to Denver flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Denver

Best price found

C$ 380

Fastest flight time

3h 45m

Direct flights

Every day

Airports in Denver

1 airport
The best one-way flight to Denver from Region of Ontario in the past 72 hours is C$ 380. The best round-trip flight deal from Region of Ontario to Denver found on momondo in the last 72 hours is C$ 644.
The fastest flight from Region of Ontario to Denver takes 3h 45m
Direct flights go from Region of Ontario to Denver every day.
There is 1 airport near Denver: Denver Intl (DEN)
Search flight deals

  • When did momondo last update prices for flights from Ontario to Denver Intl Airport?

    Prices for flights from Ontario to Denver Intl Airport were last updated today.

  • How many operators does momondo search for flights from Ontario to Denver Intl Airport?

  • How old do you have to be to fly from Ontario to Denver Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario to Denver Intl Airport.

  • What documentation or ID do you need to fly to Denver Intl Airport?

    The required travel and health documents for your Denver Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Region of Ontario to Denver?

Best airlines flying from Region of Ontario to Denver

Compare and see reviews for airlines that fly from Region of Ontario to Denver with momondo
Airline
Rating
Free Cancellation
Price
WestJetPriceFrom C$ 265Free CancellationRating
7.2
3,155 reviews
Search WestJet flights
United AirlinesPriceFrom C$ 311Free CancellationRating
7.4
9,007 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 405Free CancellationRating
7.1
10,416 reviews
Search Air Canada flights

Travelling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Silverthorne
Wheat Ridge
Winter Park
Lakewood
Longmont
Boulder
Fort Collins
Littleton
Englewood

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Denver?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Denver for you.

Can I find flights from Ontario to Denver with flexible booking policies on momondo?

momondo does allow users to show only those flights to Denver from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Denver?

Once all potential Ontario to Denver flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Denver right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Denver, momondo offers a useful price alert feature which will track prices for flights to Denver from Ontario and alert you when they change.

An easier way to manage your Denver trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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