What is the cheapest airline that flies from Denver Intl to Ontario?

WestJet, American Airlines, and Air Canada are the most popular carriers operating from Denver Intl to Ontario

How many flights depart from Denver to Region of Ontario on average per week?

The number of flights available between Denver and Region of Ontario is 66 per week as of February 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

How many flights depart from Denver to Region of Ontario on average per day?

As of February 2026, there are 9 flights per day flying from Denver to Region of Ontario. The most common time of day flights depart is 1:00p.m., with 68% of flights taking off in the afternoon.

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?

As of February 2026, there are 2 operators available to choose from 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.

C$ 145 Cheap Flights from Denver to Ontario in 2026

1 adult

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Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:30 p.m. - 7:36 p.m.

DEN

YYZ

19h 06m

2 stops

7:55 p.m. - 3:59 a.m.

YYZ

DEN

10h 04m

1 stop

C$ 352Multiple Airlines

Mon, 13 Apr - Fri, 17 Apr

6:30 a.m. - 7:50 p.m.

DEN

YYZ

11h 20m

1 stop

8:00 p.m. - 12:19 a.m.

YYZ

DEN

30h 19m

1 stop

C$ 356Multiple Airlines

Thu, 16 Apr - Mon, 20 Apr

6:30 a.m. - 7:50 p.m.

DEN

YYZ

11h 20m

1 stop

1:30 p.m. - 3:59 a.m.

YYZ

DEN

16h 29m

2 stops

C$ 358Multiple Airlines

Thu, 16 Apr - Tue, 21 Apr

5:30 a.m. - 2:44 p.m.

DEN

YUL

7h 14m

1 stop

7:29 a.m. - 6:10 p.m.

YUL

DEN

12h 41m

1 stop

C$ 460American Airlines

Thu, 23 Apr - Tue, 28 Apr

5:44 p.m. - 11:44 a.m.

DEN

YUL

16h 00m

1 stop

7:29 a.m. - 6:10 p.m.

YUL

DEN

12h 41m

1 stop

C$ 462American Airlines

Tue, 7 Apr - Tue, 14 Apr

5:30 a.m. - 2:44 p.m.

DEN

YUL

7h 14m

1 stop

7:45 a.m. - 1:20 p.m.

YUL

DEN

7h 35m

1 stop

C$ 540British Airways

Sun, 26 Apr - Sat, 2 May

12:15 p.m. - 7:50 p.m.

DEN

YKF

29h 35m

1 stop

8:40 p.m. - 11:20 a.m.

YKF

DEN

16h 40m

1 stop

C$ 598WestJet

Sat, 6 Jun - Mon, 8 Jun

12:15 p.m. - 7:50 p.m.

DEN

YKF

29h 35m

1 stop

8:40 p.m. - 11:20 a.m.

YKF

DEN

16h 40m

1 stop

C$ 599WestJet

Sat, 6 Jun - Mon, 8 Jun

9:02 p.m. - 9:18 p.m.

DEN

YXU

22h 16m

2 stops

5:10 a.m. - 10:18 a.m.

YXU

DEN

7h 08m

1 stop

C$ 1,079United Airlines

Mon, 6 Apr - Mon, 13 Apr

6:05 p.m. - 8:43 a.m.

DEN

YXU

12h 38m

1 stop

5:10 a.m. - 10:18 a.m.

YXU

DEN

7h 08m

1 stop

C$ 1,100United Airlines

Mon, 6 Apr - Mon, 13 Apr

American Airlines flights from Denver to Region of Ontario

Our best American Airlines deals on Denver to Region of Ontario flight tickets

American Airlines

30 Mar

DEN11:59 p.m.Denver Intl

13h 46m

1 stop

YYZ3:45 p.m.Toronto Pearson Intl

1 Apr

YYZ6:10 a.m.Toronto Pearson Intl

7h 26m

1 stop

DEN11:36 a.m.Denver Intl

C$ 404

American Airlines

20 Apr

DEN6:23 a.m.Denver Intl

14h 32m

1 stop

YYZ10:55 p.m.Toronto Pearson Intl

24 May

YYZ6:15 a.m.Toronto Pearson Intl

8h 45m

1 stop

DEN1:00 p.m.Denver Intl

C$ 419

American Airlines

10 Mar

DEN9:30 a.m.Denver Intl

6h 59m

1 stop

YYZ6:29 p.m.Toronto Pearson Intl

16 Mar

YYZ6:17 p.m.Toronto Pearson Intl

6h 20m

1 stop

DEN10:37 p.m.Denver Intl

C$ 431

Alaska Airlines flights from Denver to Region of Ontario

Our best Alaska Airlines deals on Denver to Region of Ontario flight tickets

Alaska Airlines

6 Mar

DEN11:38 a.m.Denver Intl

25h 57m

2 stops

YYZ3:35 p.m.Toronto Pearson Intl

11 Mar

YYZ4:45 p.m.Toronto Pearson Intl

19h 57m

2 stops

DEN10:42 a.m.Denver Intl

C$ 774

Alaska Airlines

7 Mar

DEN11:38 a.m.Denver Intl

24h 57m

2 stops

YYZ2:35 p.m.Toronto Pearson Intl

12 Mar

YYZ4:45 p.m.Toronto Pearson Intl

19h 57m

2 stops

DEN10:42 a.m.Denver Intl

C$ 796

Alaska Airlines

1 Mar

DEN11:38 a.m.Denver Intl

25h 57m

2 stops

YYZ3:35 p.m.Toronto Pearson Intl

12 Mar

YYZ4:45 p.m.Toronto Pearson Intl

19h 57m

2 stops

DEN10:42 a.m.Denver Intl

C$ 1,007

Fly from

Fly to

Route

Depart

Return

Price

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Mon 13/4

10:30 p.m.-7:36 p.m.

2 stops19h 06m

Toronto Pearson Intl

Fri 17/4

7:55 p.m.-3:59 a.m.

1 stop10h 04m

C$ 352

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Thu 16/4

6:30 a.m.-7:50 p.m.

1 stop11h 20m

Toronto Pearson Intl

Mon 20/4

8:00 p.m.-12:19 a.m.

1 stop30h 19m

C$ 356

DenverToronto

DEN - YYZ

DENYYZ

Denver Intl

Thu 16/4

6:30 a.m.-7:50 p.m.

1 stop11h 20m

Toronto Pearson Intl

Tue 21/4

1:30 p.m.-3:59 a.m.

2 stops16h 29m

C$ 358

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Thu 23/4

5:30 a.m.-2:44 p.m.

1 stop7h 14m

Montreal Pierre Elliott Trudeau Intl

Tue 28/4

7:29 a.m.-6:10 p.m.

1 stop12h 41m

C$ 460

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Tue 7/4

5:44 p.m.-11:44 a.m.

1 stop16h 00m

Montreal Pierre Elliott Trudeau Intl

Tue 14/4

7:29 a.m.-6:10 p.m.

1 stop12h 41m

C$ 462

DenverMontreal

DEN - YUL

DENYUL

Denver Intl

Sun 26/4

5:30 a.m.-2:44 p.m.

1 stop7h 14m

Montreal Pierre Elliott Trudeau Intl

Sat 2/5

7:45 a.m.-1:20 p.m.

1 stop7h 35m

C$ 540

DenverToronto

DEN - YKF

DENYKF

Denver Intl

Sat 6/6

12:15 p.m.-7:50 p.m.

1 stop29h 35m

Toronto Region of Waterloo Intl

Mon 8/6

8:40 p.m.-11:20 a.m.

1 stop16h 40m

C$ 598

DenverToronto

DEN - YKF

DENYKF

Denver Intl

Sat 6/6

12:15 p.m.-7:50 p.m.

1 stop29h 35m

Toronto Region of Waterloo Intl

Mon 8/6

8:40 p.m.-11:20 a.m.

1 stop16h 40m

C$ 599

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Mon 6/4

9:02 p.m.-9:18 p.m.

2 stops22h 16m

London

Mon 13/4

5:10 a.m.-10:18 a.m.

1 stop7h 08m

C$ 1,079

DenverLondon

DEN - YXU

DENYXU

Denver Intl

Mon 6/4

6:05 p.m.-8:43 a.m.

1 stop12h 38m

London

Mon 13/4

5:10 a.m.-10:18 a.m.

1 stop7h 08m

C$ 1,100

Flights are sorted by cheapest round-trip flights first.

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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

Prices

Airlines

Other information

What is the cheapest month to fly to Region of Ontario?

In general, September 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$ 626. If you are unable to visit Region of Ontario during the month of September, then departing from Denver during the month March is also very affordable. Most momondo users find prices during this month for around C$ 629.

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 Monday. Travellers who choose to depart for Region of Ontario on a Monday will often find tickets for as low as C$ 520. The most expensive day to fly to Region of Ontario is Friday, with ticket prices averaging around C$ 924.

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$ 524. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 1,049 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$ 739 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$ 529 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 54% 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$ 353
Fastest flight time	3h 10m
Direct flights	Every day
Airports in Region of Ontario	123 airports

The best one-way flight to Region of Ontario from Denver in the past 72 hours is C$ 353. The best round-trip flight deal from Denver to Region of Ontario found on momondo in the last 72 hours is C$ 524.

The fastest flight from Denver to Region of Ontario takes 3h 10m

Direct flights go from Denver to Region of Ontario every day.

There are 123 airports in Region of Ontario. From Denver there are direct flights to 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?
As of February 2026, there are 2 operators available to choose from 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?
Based on momondo bookings for flights between Denver and Region of Ontario, the leading plane model is Airbus A319, making up 42.82% of the total bookings. Other popular models include Airbus A220-300 with 27.09%, Boeing 787 Dreamliner with 8.62%, and Boeing 777 with 4.51%.

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 Airlines	PriceFrom C$ 214	Free Cancellation	Rating 7.4 9,341 reviews		Search United Airlines flights
Air Canada	PriceFrom C$ 249	Free Cancellation	Rating 7.1 10,738 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

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Popular Cities in Ontario

Flights to Torontofrom C$ 129

Flights to Vancouverfrom C$ 77

Flights to Montrealfrom C$ 100

Flights to Calgaryfrom C$ 98

Flights to Ottawafrom C$ 146

Flights to Winnipegfrom C$ 118

Flights to Halifaxfrom C$ 89

Flights to Kelownafrom C$ 78

Flights to Saskatoonfrom C$ 197

Flights to Reginafrom C$ 182

Flights to St. John'sfrom C$ 235

Flights to Québec Cityfrom C$ 334

Cheap flights from Denver to Ontario from C$ 145

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 31/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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American Airlines flights from Denver to Region of Ontario

Our best American Airlines deals on Denver to Region of Ontario flight tickets

Alaska Airlines flights from Denver to Region of Ontario

Our best Alaska Airlines deals on Denver to Region of Ontario flight tickets

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

What is the cheapest month to fly to Region of Ontario?

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

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

What is the cheapest Denver Intl to Ontario flight route?

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

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

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

What is the cheapest airline that flies from Denver Intl to Ontario?

How many flights depart from Denver to Region of Ontario on average per day?

How many flights depart from Denver to Region of Ontario on average per week?

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

Fastest flight time

Direct flights

Airports in 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

Why use momondo?

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

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

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

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

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ontario

Popular Cities in Ontario

Popular flights according to clicks in the last 7 days on momondo

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