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Cheap flights from Ontario to Denver from C$ 181

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 10/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:00 a.m. - 10:13 a.m.
YOW
-
DEN
29h 13m2 stops
Multiple Airlines Logo
11:59 p.m. - 5:13 p.m.
DEN
-
YOW
15h 14m1 stop
C$ 411Multiple Airlines
Tue, 3 Feb - Tue, 10 Feb
Multiple Airlines Logo
4:20 p.m. - 10:00 a.m.
YOW
-
DEN
19h 40m1 stop
Multiple Airlines Logo
11:59 p.m. - 5:13 p.m.
DEN
-
YOW
15h 14m1 stop
C$ 426Multiple Airlines
Tue, 3 Feb - Tue, 10 Feb
Multiple Airlines Logo
9:40 a.m. - 2:25 p.m.
YOW
-
DEN
30h 45m1 stop
Multiple Airlines Logo
9:12 p.m. - 5:25 p.m.
DEN
-
YOW
18h 13m2 stops
C$ 446Multiple Airlines
Mon, 12 Jan - Fri, 16 Jan
WestJet Logo
6:00 a.m. - 6:50 p.m.
YHM
-
DEN
14h 50m1 stop
WestJet Logo
12:15 p.m. - 12:40 a.m.
DEN
-
YHM
10h 25m1 stop
C$ 504WestJet
Thu, 21 May - Mon, 25 May
Air Canada Logo
5:25 p.m. - 7:55 p.m.
YUL
-
DEN
4h 30mdirect
Air Canada Logo
8:05 a.m. - 8:55 p.m.
DEN
-
YUL
10h 50m1 stop
C$ 508Air Canada
Fri, 9 Jan - Thu, 15 Jan
Air Canada Logo
8:30 a.m. - 10:23 a.m.
YYZ
-
DEN
3h 53mdirect
Air Canada Logo
1:25 p.m. - 6:35 p.m.
DEN
-
YYZ
3h 10mdirect
C$ 508Air Canada
Thu, 8 Jan - Wed, 14 Jan
Alaska Airlines Logo
4:45 p.m. - 12:41 p.m.
YYZ
-
DEN
21h 56m1 stop
Alaska Airlines Logo
5:09 p.m. - 3:35 p.m.
DEN
-
YYZ
20h 26m1 stop
C$ 516Alaska Airlines
Thu, 29 Jan - Mon, 2 Feb
Alaska Airlines Logo
4:45 p.m. - 10:53 a.m.
YYZ
-
DEN
20h 08m2 stops
Alaska Airlines Logo
7:00 a.m. - 3:35 p.m.
DEN
-
YYZ
30h 35m1 stop
C$ 517Alaska Airlines
Mon, 12 Jan - Sun, 18 Jan
American Airlines Logo
7:04 p.m. - 11:16 p.m.
YYZ
-
DEN
6h 12m1 stop
American Airlines Logo
7:00 a.m. - 9:29 p.m.
DEN
-
YYZ
12h 29m1 stop
C$ 531American Airlines
Wed, 11 Feb - Sat, 14 Feb
WestJet Logo
6:20 a.m. - 3:15 p.m.
YKF
-
DEN
34h 55m2 stops
WestJet Logo
7:15 a.m. - 5:28 a.m.
DEN
-
YKF
20h 13m2 stops
C$ 887WestJet
Mon, 26 Jan - Wed, 28 Jan

WestJet flights from Region of Ontario to Denver

Our best WestJet deals on Region of Ontario to Denver flight tickets
WestJet
21 May
YHM6:00 a.m.Hamilton
14h 50m
1 stop
DEN6:50 p.m.Denver Intl
25 May
DEN12:15 p.m.Denver Intl
10h 25m
1 stop
YHM12:40 a.m.Hamilton
C$ 504
Find similar
WestJet
26 Jan
YKF6:20 a.m.Toronto Region of Waterloo Intl
34h 55m
2 stops
DEN3:15 p.m.Denver Intl
28 Jan
DEN7:15 a.m.Denver Intl
20h 13m
2 stops
YKF5:28 a.m.Toronto Region of Waterloo Intl
C$ 887
Find similar
WestJet
25 Dec
YUL2:40 p.m.Montreal Pierre Elliott Trudeau Intl
7h 28m
1 stop
DEN8:08 p.m.Denver Intl
30 Dec
DEN6:00 a.m.Denver Intl
5h 49m
1 stop
YUL1:49 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 1,093
Find similar

Air Canada flights from Region of Ontario to Denver

Our best Air Canada deals on Region of Ontario to Denver flight tickets
Air Canada
9 Jan
YUL5:25 p.m.Montreal Pierre Elliott Trudeau Intl
4h 30m
DEN7:55 p.m.Denver Intl
15 Jan
DEN8:05 a.m.Denver Intl
10h 50m
1 stop
YUL8:55 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 508
Find similar
Air Canada
9 Jan
YUL8:50 a.m.Montreal Pierre Elliott Trudeau Intl
9h 50m
2 stops
DEN4:40 p.m.Denver Intl
15 Jan
DEN8:05 a.m.Denver Intl
9h 20m
1 stop
YUL7:25 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 512
Find similar
Air Canada
13 Jan
YUL5:25 p.m.Montreal Pierre Elliott Trudeau Intl
4h 30m
DEN7:55 p.m.Denver Intl
20 Jan
DEN11:15 a.m.Denver Intl
3h 43m
YUL4:58 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 515
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 21 December 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

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Tue 3/2

7:00 a.m.-10:13 a.m.

2 stops29h 13m

Denver Intl

Tue 10/2

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

1 stop15h 14m

C$ 411

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Tue 3/2

4:20 p.m.-10:00 a.m.

1 stop19h 40m

Denver Intl

Tue 10/2

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

1 stop15h 14m

C$ 426

OttawaDenver

YOW - DEN

YOWDEN

Ottawa

Mon 12/1

9:40 a.m.-2:25 p.m.

1 stop30h 45m

Denver Intl

Fri 16/1

9:12 p.m.-5:25 p.m.

2 stops18h 13m

C$ 446

HamiltonDenver

YHM - DEN

YHMDEN

Hamilton

Thu 21/5

6:00 a.m.-6:50 p.m.

1 stop14h 50m

Denver Intl

Mon 25/5

12:15 p.m.-12:40 a.m.

1 stop10h 25m

C$ 504

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Fri 9/1

5:25 p.m.-7:55 p.m.

Nonstop4h 30m

Denver Intl

Thu 15/1

8:05 a.m.-8:55 p.m.

1 stop10h 50m

C$ 508

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Thu 8/1

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

Nonstop3h 53m

Denver Intl

Wed 14/1

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

Nonstop3h 10m

C$ 508

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Thu 29/1

4:45 p.m.-12:41 p.m.

1 stop21h 56m

Denver Intl

Mon 2/2

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

1 stop20h 26m

C$ 516

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Mon 12/1

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

2 stops20h 08m

Denver Intl

Sun 18/1

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

1 stop30h 35m

C$ 517

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Wed 11/2

7:04 p.m.-11:16 p.m.

1 stop6h 12m

Denver Intl

Sat 14/2

7:00 a.m.-9:29 p.m.

1 stop12h 29m

C$ 531

TorontoDenver

YKF - DEN

YKFDEN

Toronto Region of Waterloo Intl

Mon 26/1

6:20 a.m.-3:15 p.m.

2 stops34h 55m

Denver Intl

Wed 28/1

7:15 a.m.-5:28 a.m.

2 stops20h 13m

C$ 887

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$ 544. 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$ 577.

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$ 716. 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$ 1,023.

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$ 629. Try not to purchase tickets at noon because they tend to be around C$ 808. 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$ 617 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$ 557 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 16% 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$ 371

Fastest flight time

3h 46m

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$ 371. The best round-trip flight deal from Region of Ontario to Denver found on momondo in the last 72 hours is C$ 601.
The fastest flight from Region of Ontario to Denver takes 3h 46m
Direct flights go from Region of Ontario to Denver every day.
There is 1 airport in Denver. From Region of Ontario there are direct flights to 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$ 259Free CancellationRating
7.2
3,208 reviews
Search WestJet flights
United AirlinesPriceFrom C$ 304Free CancellationRating
7.4
9,099 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 430Free CancellationRating
7.1
10,549 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
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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