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Pierre Elliott Trudeau Intl

$134+ Cheap flights from Ontario (ONT) to Pierre Elliott Trudeau Intl (YUL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — YUL
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Ontario to Pierre Elliott Trudeau Intl

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Pierre Elliott Trudeau Intl (YUL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Round-trip from

$463
(American Airlines)

One-way from

$134
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$406
From Ontario to Montreal Pierre Elliott Trudeau Intl
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One-way flight from Ontario to Montreal Pierre Elliott Trudeau Intl
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Highest demand for flights based on searches. 16% potential increase in price ($85 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Ontario to Pierre Elliott Trudeau Intl

Cheapest flights from Ontario to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from Ontario to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This American Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/14:49 pmONT - YUL
2 stops17h 26mAmerican Airlines
Sat 11/87:14 amYUL - ONT
2 stops14h 06mAmerican Airlines
Deal found 9/17$463
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:53 amONT - YUL
2 stops13h 29mMultiple Airlines
Thu 11/65:25 pmYUL - ONT
1 stop9h 25mMultiple Airlines
Deal found 9/15$605
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/16:38 pmONT - YUL
1 stop20h 11mUnited Airlines
Sat 11/82:13 pmYUL - ONT
2 stops25h 24mUnited Airlines
Deal found 9/16$660
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/304:49 pmONT - YUL
2 stops16h 35mAmerican Airlines
Thu 11/67:30 amYUL - ONT
2 stops13h 50mAmerican Airlines
Deal found 9/15$722
This American Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/84:49 pmONT - YUL
2 stops16h 35mAmerican Airlines
Sun 10/123:44 pmYUL - ONT
1 stop11h 15mAmerican Airlines
Deal found 9/17$732
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/111:53 pmONT - YUL
1 stop24h 07mUnited Airlines
Tue 10/146:15 amYUL - ONT
1 stop19h 15mUnited Airlines
Deal found 9/16$734
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/139:36 amONT - YUL
1 stop28h 24mUnited Airlines
Fri 10/176:30 pmYUL - ONT
1 stop26h 10mUnited Airlines
Deal found 9/15$747

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Pierre Elliott Trudeau Intl 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, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

Fly from

Ontario

Fly to

Pierre Elliott Trudeau Intl

Route

Depart

Return

Price

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 11/1

4:49 pm-1:15 pm

2 stops17h 26m

Montreal Pierre Elliott Trudeau Intl

Sat 11/8

7:14 am-6:20 pm

2 stops14h 06m

$463

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Fri 2/20

10:38 am-3:20 pm

2 stops25h 42m

Montreal Pierre Elliott Trudeau Intl

Tue 2/24

2:25 pm-8:42 am

2 stops21h 17m

$621

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 11/1

6:38 pm-5:49 pm

1 stop20h 11m

Montreal Pierre Elliott Trudeau Intl

Sat 11/8

5:50 pm-5:34 pm

1 stop26h 44m

$671

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 10/30

6:38 pm-4:49 pm

1 stop19h 11m

Montreal Pierre Elliott Trudeau Intl

Thu 11/6

5:25 pm-8:44 pm

1 stop30h 19m

$690

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Fri 2/20

1:00 pm-4:58 pm

1 stop24h 58m

Montreal Pierre Elliott Trudeau Intl

Tue 2/24

8:05 am-10:57 pm

2 stops17h 52m

$729

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 10/11

1:53 pm-5:00 pm

1 stop24h 07m

Montreal Pierre Elliott Trudeau Intl

Tue 10/14

6:15 am-10:30 pm

1 stop19h 15m

$734

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 10/18

7:05 am-8:37 am

2 stops22h 32m

$252

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 10/8

1:53 pm-8:16 am

1 stop15h 23m

$299

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 10/18

1:53 pm-8:16 am

1 stop15h 23m

$299

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 10/15

1:53 pm-8:16 am

1 stop15h 23m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 14 results
1
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Best time to book a flight from Ontario to Pierre Elliott Trudeau Intl

Have a flexible travel schedule? Discover the best time to fly to Pierre Elliott Trudeau Intl from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport

What is the cheapest month to book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport (average of $270). Flying from Ontario to Montreal Pierre Elliott Trudeau Intl Airport in July is currently the most expensive (average of $409). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to YUL?

Find hourly flight availability from Ontario to Pierre Elliott Trudeau Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

One of the essential ways to save on airfare from Ontario to Montreal Pierre Elliott Trudeau Intl Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 19% on airfare.

Reviews of airlines servicing Pierre Elliott Trudeau Intl

Get insights into the airlines that provide service to Pierre Elliott Trudeau Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Pierre Elliott Trudeau Intl. Reviews last updated September 17, 2025.
Read through reviews of airlines operating flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport, such as Delta, United Airlines, and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.1
Good
10,000 reviews
Delta
8.0
Very good
7,961 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Pierre Elliott Trudeau Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Montreal Pierre Elliott Trudeau Intl?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Montreal Pierre Elliott Trudeau Intl. 3 airlines have flights from Ontario to Montreal Pierre Elliott Trudeau Intl on a regular basis. Booking flights from Ontario to Montreal Pierre Elliott Trudeau Intl should not be difficult; the airport handles an average of 0 outbound flights to Montreal Pierre Elliott Trudeau Intl per day.

  • How long is the flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?

    There are many flights that can get you from Ontario to Montreal Pierre Elliott Trudeau Intl Airport in 17h 26m. Fly via American Airlines or United Airlines to get the fastest option. There are 2423 mi between Ontario and Montreal Pierre Elliott Trudeau Intl Airport. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Ontario to Montreal Pierre Elliott Trudeau Intl Airport round-trip?

    United Airlines, at $219, was found to be the cheapest airline from Ontario to Montreal Pierre Elliott Trudeau Intl Airport.Alternate airlines to your destination round-trip include Delta and Air Canada.

  • Can I find deals for flights from Ontario to Pierre Elliott Trudeau Intl that include hotel bookings?

    Yes. In addition to deals on Ontario to Pierre Elliott Trudeau Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Pierre Elliott Trudeau Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Pierre Elliott Trudeau Intl.

  • Can I find deals for business class flights from Ontario to Pierre Elliott Trudeau Intl?

    Yes. Cheapflights offers flight deals from Ontario to Pierre Elliott Trudeau Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport (average of $270). Flying from Ontario to Montreal Pierre Elliott Trudeau Intl Airport in July is currently the most expensive (average of $409). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Montreal Pierre Elliott Trudeau Intl Airport?

Book flights to Montreal Pierre Elliott Trudeau Intl Airport if you plan to visit one of these locations
Laval
Longueuil
Brossard
Sherbrooke
Dorval

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Alternative routes for Ontario to Pierre Elliott Trudeau Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Ontario to Pierre Elliott Trudeau Intl

Discover the top 3 airlines that operate flights from Ontario to Pierre Elliott Trudeau Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$219Average$533FlexibilityNo cancel feeOn-time69%
DeltaCheapest$347Average$470FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$376Average$600FlexibilityNo cancel feeOn-time67%

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