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Cheap flights from Ontario to Denver from C$ 187

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 9/3. 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.
WestJet Logo
6:10 p.m. - 11:20 a.m.
YHM
-
DEN
19h 10m
1 stop
WestJet Logo
12:15 p.m. - 5:15 p.m.
DEN
-
YHM
27h 00m
1 stop
C$ 436WestJet
Sat, 2 May - Sun, 10 May
WestJet Logo
6:10 p.m. - 11:20 a.m.
YHM
-
DEN
19h 10m
1 stop
WestJet Logo
12:15 p.m. - 5:15 p.m.
DEN
-
YHM
27h 00m
1 stop
C$ 442WestJet
Sun, 3 May - Sun, 10 May
WestJet Logo
6:10 p.m. - 11:20 a.m.
YHM
-
DEN
19h 10m
1 stop
WestJet Logo
12:15 p.m. - 5:10 p.m.
DEN
-
YHM
26h 55m
1 stop
C$ 470WestJet
Thu, 18 Jun - Mon, 22 Jun
WestJet Logo
6:10 p.m. - 11:20 a.m.
YHM
-
DEN
19h 10m
1 stop
WestJet Logo
12:15 p.m. - 5:15 p.m.
DEN
-
YHM
27h 00m
1 stop
C$ 485WestJet
Sun, 3 May - Fri, 8 May
WestJet Logo
8:00 p.m. - 11:20 a.m.
YUL
-
DEN
17h 20m
1 stop
WestJet Logo
7:40 p.m. - 7:05 a.m.
DEN
-
YUL
9h 25m
1 stop
C$ 503WestJet
Tue, 28 Jul - Fri, 31 Jul
WestJet Logo
8:00 p.m. - 11:20 a.m.
YUL
-
DEN
17h 20m
1 stop
WestJet Logo
12:15 p.m. - 6:25 p.m.
DEN
-
YUL
28h 10m
2 stops
C$ 511WestJet
Tue, 28 Jul - Fri, 31 Jul
Multiple Airlines Logo
10:00 a.m. - 9:38 p.m.
YYZ
-
DEN
13h 38m
2 stops
Multiple Airlines Logo
12:15 p.m. - 12:10 a.m.
DEN
-
YYZ
9h 55m
1 stop
C$ 514Multiple Airlines
Tue, 12 May - Wed, 20 May
Air Canada Logo
8:30 a.m. - 10:23 a.m.
YYZ
-
DEN
3h 53mdirect
Air Canada Logo
7:05 p.m. - 6:48 a.m.
DEN
-
YYZ
9h 43m
1 stop
C$ 517Air Canada
Sat, 28 Feb - Wed, 15 Apr
Air Canada Logo
5:35 p.m. - 7:55 p.m.
YUL
-
DEN
4h 20mdirect
Air Canada Logo
11:10 a.m. - 4:58 p.m.
DEN
-
YUL
3h 48mdirect
C$ 526Air Canada
Fri, 10 Apr - Mon, 13 Apr
Air Canada Logo
5:35 p.m. - 7:55 p.m.
YUL
-
DEN
4h 20mdirect
Air Canada Logo
8:45 a.m. - 9:03 p.m.
DEN
-
YUL
10h 18m
1 stop
C$ 533Air Canada
Fri, 10 Apr - Mon, 13 Apr

American Airlines flights from Region of Ontario to Denver

Our best American Airlines deals on Region of Ontario to Denver flight tickets
American Airlines
7 Mar
YYZ1:10 p.m.Toronto Pearson Intl
11h 27m
1 stop
DEN10:37 p.m.Denver Intl
14 Mar
DEN6:00 a.m.Denver Intl
8h 19m
1 stop
YYZ4:19 p.m.Toronto Pearson Intl
C$ 547
American Airlines
10 Apr
YUL7:29 a.m.Montreal Pierre Elliott Trudeau Intl
12h 57m
1 stop
DEN6:26 p.m.Denver Intl
13 Apr
DEN5:44 p.m.Denver Intl
16h 00m
1 stop
YUL11:44 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 573
American Airlines
6 Mar
YUL3:45 p.m.Montreal Pierre Elliott Trudeau Intl
19h 02m
1 stop
DEN8:47 a.m.Denver Intl
17 Mar
DEN10:25 a.m.Denver Intl
23h 59m
2 stops
YUL12:24 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 660

Delta flights from Region of Ontario to Denver

Our best Delta deals on Region of Ontario to Denver flight tickets
Delta
30 Mar
YYZ6:49 p.m.Toronto Pearson Intl
17h 17m
1 stop
DEN10:06 a.m.Denver Intl
6 Apr
DEN6:20 a.m.Denver Intl
7h 39m
1 stop
YYZ3:59 p.m.Toronto Pearson Intl
C$ 558
Delta
9 Mar
YUL7:30 p.m.Montreal Pierre Elliott Trudeau Intl
16h 36m
1 stop
DEN10:06 a.m.Denver Intl
12 Mar
DEN12:35 a.m.Denver Intl
9h 24m
1 stop
YUL11:59 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 578
Delta
20 Mar
YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl
8h 34m
1 stop
DEN1:34 p.m.Denver Intl
24 Mar
DEN11:38 a.m.Denver Intl
18h 52m
1 stop
YUL8:30 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 580

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 9 February 2026.
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

HamiltonDenver

YHM - DEN

YHMDEN

Hamilton

Sat 2/5

6:10 p.m.-11:20 a.m.

1 stop19h 10m

Denver Intl

Sun 10/5

12:15 p.m.-5:15 p.m.

1 stop27h 00m

C$ 436

HamiltonDenver

YHM - DEN

YHMDEN

Hamilton

Sun 3/5

6:10 p.m.-11:20 a.m.

1 stop19h 10m

Denver Intl

Sun 10/5

12:15 p.m.-5:15 p.m.

1 stop27h 00m

C$ 442

HamiltonDenver

YHM - DEN

YHMDEN

Hamilton

Thu 18/6

6:10 p.m.-11:20 a.m.

1 stop19h 10m

Denver Intl

Mon 22/6

12:15 p.m.-5:10 p.m.

1 stop26h 55m

C$ 470

HamiltonDenver

YHM - DEN

YHMDEN

Hamilton

Sun 3/5

6:10 p.m.-11:20 a.m.

1 stop19h 10m

Denver Intl

Fri 8/5

12:15 p.m.-5:15 p.m.

1 stop27h 00m

C$ 485

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Tue 28/7

8:00 p.m.-11:20 a.m.

1 stop17h 20m

Denver Intl

Fri 31/7

7:40 p.m.-7:05 a.m.

1 stop9h 25m

C$ 503

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Tue 28/7

8:00 p.m.-11:20 a.m.

1 stop17h 20m

Denver Intl

Fri 31/7

12:15 p.m.-6:25 p.m.

2 stops28h 10m

C$ 511

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Tue 12/5

10:00 a.m.-9:38 p.m.

2 stops13h 38m

Denver Intl

Wed 20/5

12:15 p.m.-12:10 a.m.

1 stop9h 55m

C$ 514

TorontoDenver

YYZ - DEN

YYZDEN

Toronto Pearson Intl

Sat 28/2

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

Nonstop3h 53m

Denver Intl

Wed 15/4

7:05 p.m.-6:48 a.m.

1 stop9h 43m

C$ 517

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Fri 10/4

5:35 p.m.-7:55 p.m.

Nonstop4h 20m

Denver Intl

Mon 13/4

11:10 a.m.-4:58 p.m.

Nonstop3h 48m

C$ 526

MontrealDenver

YUL - DEN

YULDEN

Montreal Pierre Elliott Trudeau Intl

Fri 10/4

5:35 p.m.-7:55 p.m.

Nonstop4h 20m

Denver Intl

Mon 13/4

8:45 a.m.-9:03 p.m.

1 stop10h 18m

C$ 533

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$ 539. 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$ 566.

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$ 682. 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$ 981.

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 afternoon. Flights from Region of Ontario to Denver during this time can be as low as C$ 741. Try not to purchase tickets at noon because they tend to be around C$ 971. 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$ 628 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$ 483 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 22% 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$ 294

Fastest flight time

3h 42m

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$ 294. The best round-trip flight deal from Region of Ontario to Denver found on momondo in the last 72 hours is C$ 593.
The fastest flight from Region of Ontario to Denver takes 3h 42m
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$ 254Free CancellationRating
7.2
3,256 reviews
Search WestJet flights
United AirlinesPriceFrom C$ 301Free CancellationRating
7.4
9,259 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 391Free CancellationRating
7.1
10,698 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

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