Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Denver to Ontario from C$ 156

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Ontario departing on 17/12. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Denver to Ontario

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:44 a.m. - 12:30 a.m.DEN-YUL
12h 46m1 stop
Multiple Airlines Logo
6:45 a.m. - 10:57 p.m.YUL-DEN
18h 12m2 stops
C$ 378Multiple Airlines
Find Deal
Fri, 16 Jan - Mon, 19 Jan
Multiple Airlines Logo
6:31 p.m. - 7:44 p.m.DEN-YUL
23h 13m2 stops
Multiple Airlines Logo
5:10 p.m. - 1:23 a.m.YUL-DEN
10h 13m1 stop
C$ 451Multiple Airlines
Find Deal
Fri, 5 Dec - Mon, 8 Dec
American Airlines Logo
7:20 a.m. - 9:23 p.m.DEN-YYZ
12h 03m1 stop
American Airlines Logo
11:30 a.m. - 11:16 p.m.YYZ-DEN
13h 46m1 stop
C$ 471American Airlines
Find Deal
Tue, 13 Jan - Wed, 14 Jan
American Airlines Logo
3:14 p.m. - 3:08 p.m.DEN-YUL
21h 54m1 stop
American Airlines Logo
3:52 p.m. - 10:49 a.m.YUL-DEN
20h 57m1 stop
C$ 474American Airlines
Find Deal
Tue, 20 Jan - Tue, 27 Jan
United Airlines Logo
4:03 p.m. - 8:46 a.m.DEN-YXU
14h 43m2 stops
United Airlines Logo
5:10 a.m. - 4:36 p.m.YXU-DEN
13h 26m2 stops
C$ 1,117United Airlines
Find Deal
Thu, 19 Feb - Mon, 23 Feb
United Airlines Logo
1:45 p.m. - 8:46 a.m.DEN-YXU
17h 01m2 stops
United Airlines Logo
5:10 a.m. - 4:36 p.m.YXU-DEN
13h 26m2 stops
C$ 1,118United Airlines
Find Deal
Thu, 19 Feb - Mon, 23 Feb
Air Canada Logo
11:42 a.m. - 8:46 a.m.DEN-YXU
19h 04m2 stops
Air Canada Logo
5:40 p.m. - 8:55 a.m.YXU-DEN
17h 15m2 stops
C$ 1,124Air Canada
Find Deal
Thu, 19 Feb - Mon, 23 Feb
Air Canada Logo
1:25 p.m. - 9:21 p.m.DEN-YXU
5h 56m1 stop
Air Canada Logo
5:40 p.m. - 8:55 a.m.YXU-DEN
17h 15m2 stops
C$ 1,156Air Canada
Find Deal
Thu, 19 Feb - Mon, 23 Feb
WestJet Logo
6:24 a.m. - 1:21 p.m.DEN-YHM
28h 57m2 stops
WestJet Logo
6:10 p.m. - 3:04 p.m.YHM-DEN
22h 54m2 stops
C$ 1,289WestJet
Find Deal
Thu, 26 Feb - Sun, 1 Mar
WestJet Logo
6:24 a.m. - 5:16 p.m.DEN-YHM
32h 52m2 stops
WestJet Logo
6:10 p.m. - 8:07 p.m.YHM-DEN
27h 57m2 stops
C$ 1,329WestJet
Find Deal
Sun, 1 Mar - Wed, 4 Mar

United Airlines flights from Denver to Region of Ontario

Our best United Airlines deals on Denver to Region of Ontario flight tickets
United Airlines
14 Feb
DEN5:54 p.m.Denver Intl
14h 26m
1 stop
YUL10:20 a.m.Montreal Pierre Elliott Trudeau Intl
17 Feb
YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl
11h 57m
1 stop
DEN3:57 p.m.Denver Intl
C$ 636
Find similar
United Airlines
14 Jan
DEN7:50 a.m.Denver Intl
8h 50m
1 stop
YUL6:40 p.m.Montreal Pierre Elliott Trudeau Intl
18 Jan
YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl
18h 00m
1 stop
DEN10:00 p.m.Denver Intl
C$ 637
Find similar
United Airlines
11 Mar
DEN5:54 p.m.Denver Intl
20h 03m
1 stop
YUL3:57 p.m.Montreal Pierre Elliott Trudeau Intl
17 Mar
YUL9:25 a.m.Montreal Pierre Elliott Trudeau Intl
15h 56m
1 stop
DEN11:21 p.m.Denver Intl
C$ 639
Find similar

American Airlines flights from Denver to Region of Ontario

Our best American Airlines deals on Denver to Region of Ontario flight tickets
American Airlines
13 Jan
DEN7:20 a.m.Denver Intl
12h 03m
1 stop
YYZ9:23 p.m.Toronto Pearson Intl
14 Jan
YYZ11:30 a.m.Toronto Pearson Intl
13h 46m
1 stop
DEN11:16 p.m.Denver Intl
C$ 471
Find similar
American Airlines
20 Jan
DEN3:14 p.m.Denver Intl
21h 54m
1 stop
YUL3:08 p.m.Montreal Pierre Elliott Trudeau Intl
27 Jan
YUL3:52 p.m.Montreal Pierre Elliott Trudeau Intl
20h 57m
1 stop
DEN10:49 a.m.Denver Intl
C$ 474
Find similar
American Airlines
28 Jan
DEN3:00 p.m.Denver Intl
22h 08m
1 stop
YUL3:08 p.m.Montreal Pierre Elliott Trudeau Intl
2 Feb
YUL3:52 p.m.Montreal Pierre Elliott Trudeau Intl
20h 57m
1 stop
DEN10:49 a.m.Denver Intl
C$ 475
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Region of Ontario 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 13 November 2025.
Use the filters below to find and compare flights from Denver to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Fri 16/1

9:44 a.m.-12:30 a.m.

1 stop12h 46m

Montreal Pierre Elliott Trudeau Intl

Mon 19/1

6:45 a.m.-10:57 p.m.

2 stops18h 12m

C$ 378

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Fri 5/12

6:31 p.m.-7:44 p.m.

2 stops23h 13m

Montreal Pierre Elliott Trudeau Intl

Mon 8/12

5:10 p.m.-1:23 a.m.

1 stop10h 13m

C$ 451

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Tue 13/1

7:20 a.m.-9:23 p.m.

1 stop12h 03m

Toronto Pearson Intl

Wed 14/1

11:30 a.m.-11:16 p.m.

1 stop13h 46m

C$ 471

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Tue 20/1

3:14 p.m.-3:08 p.m.

1 stop21h 54m

Montreal Pierre Elliott Trudeau Intl

Tue 27/1

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

1 stop20h 57m

C$ 474

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Thu 19/2

4:03 p.m.-8:46 a.m.

2 stops14h 43m

London

Mon 23/2

5:10 a.m.-4:36 p.m.

2 stops13h 26m

C$ 1,117

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Thu 19/2

1:45 p.m.-8:46 a.m.

2 stops17h 01m

London

Mon 23/2

5:10 a.m.-4:36 p.m.

2 stops13h 26m

C$ 1,118

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Thu 19/2

11:42 a.m.-8:46 a.m.

2 stops19h 04m

London

Mon 23/2

5:40 p.m.-8:55 a.m.

2 stops17h 15m

C$ 1,124

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Thu 19/2

1:25 p.m.-9:21 p.m.

1 stop5h 56m

London

Mon 23/2

5:40 p.m.-8:55 a.m.

2 stops17h 15m

C$ 1,156

DenverHamilton

DEN - YHM

DENYHM

Denver Intl

Thu 26/2

6:24 a.m.-1:21 p.m.

2 stops28h 57m

Hamilton

Sun 1/3

6:10 p.m.-3:04 p.m.

2 stops22h 54m

C$ 1,289

DenverHamilton

DEN - YHM

DENYHM

Denver Intl

Sun 1/3

6:24 a.m.-5:16 p.m.

2 stops32h 52m

Hamilton

Wed 4/3

6:10 p.m.-8:07 p.m.

2 stops27h 57m

C$ 1,329

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Ontario from

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

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 Region of Ontario?

In general, March is the cheapest month to fly from Denver to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 354. If you are unable to visit Region of Ontario during the month of March, then departing from Denver during the month January is also very affordable. Most momondo users find prices during this month for around C$ 444.

What is the cheapest day to depart on your flight to Region of Ontario?

The cheapest day to depart from Denver to Region of Ontario is on a Thursday. Travellers who choose to depart for Region of Ontario on a Thursday will often find tickets for as low as C$ 503. The most expensive day to fly to Region of Ontario is Sunday, with ticket prices averaging around C$ 820.

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

Our most recent data shows that the best time of day to fly to Region of Ontario is in the afternoon. Flights from Denver to Region of Ontario during this time can be as low as C$ 533. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 1,306 on average. Flights to Region of Ontario from Denver at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Denver Intl to Ontario flight route?

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

How far in advance should I book a flight to Region of Ontario?

You are more likely to see cheaper flights to Region of Ontario from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around C$ 703 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from Denver for as low as C$ 457 on momondo.

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

There are 3 cabin classes available to choose from on Denver Intl to Ontario 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 Denver to Region of Ontario flights?

You could potentially save up to 56% on your flight if you consider stops on a Denver to Region of Ontario flight.

Cheap Denver to Region of Ontario flight deals and tips

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

Best price found

C$ 762

Fastest flight time

3h 09m

Direct flights

Every day

Airports in Region of Ontario

2 airports
The best one-way flight to Region of Ontario from Denver in the past 72 hours is C$ 762. The best round-trip flight deal from Denver to Region of Ontario found on momondo in the last 72 hours is C$ 681.
The fastest flight from Denver to Region of Ontario takes 3h 09m
Direct flights go from Denver to Region of Ontario every day.
There are 2 airports near Region of Ontario: Montreal Pierre Elliott Trudeau Intl (YUL), Toronto Pearson Intl (YYZ)
Search flight deals

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Denver Intl Airport to Ontario.

  • What documentation or ID do you need to fly to Ontario?

    The required travel and health documents for your Ontario 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 Ontario. 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 Denver to Region of Ontario?

Best airlines flying from Denver to Region of Ontario

Compare and see reviews for airlines that fly from Denver to Region of Ontario with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom C$ 247Free CancellationRating
7.4
9,017 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 291Free CancellationRating
7.1
10,448 reviews
Search Air Canada flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Denver to Ontario . Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Denver to Ontario on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Ontario from Denver. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Denver to Ontario now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ontario and let you know when they change.

An easier way to manage your Region of Ontario 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 13/12
Sat 20/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ontario

Popular Cities in Ontario

Popular flights according to clicks in the last 7 days on momondo
Flights to Torontofrom C$ 88
Flights to Vancouverfrom C$ 62
Flights to Montrealfrom C$ 59
Flights to Calgaryfrom C$ 80
Flights to Ottawafrom C$ 171
Flights to Winnipegfrom C$ 139
Flights to Halifaxfrom C$ 59
Flights to Kelownafrom C$ 73
Flights to Saskatoonfrom C$ 154
Flights to Reginafrom C$ 172
Flights to St. John'sfrom C$ 275
Flights to Québec Cityfrom C$ 291