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Pierre Elliott Trudeau Intl

$118+ 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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — YUL
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:05 amONT - YUL
2 stops13h 11mUnited Airlines
Sat 12/274:45 pmYUL - ONT
1 stop8h 40mUnited Airlines
Deal found 12/17$1,042
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/241:15 pmONT - YUL
2 stops19h 43mDelta
Sat 12/277:00 amYUL - ONT
2 stops15h 50mDelta
Deal found 12/17$1,068
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2411:59 pmONT - YUL
1 stop11h 01mUnited Airlines
Sat 12/274:45 pmYUL - ONT
1 stop8h 40mUnited Airlines
Deal found 12/17$1,077
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:00 amONT - YUL
2 stops14h 59mDelta
Mon 12/2912:37 pmYUL - ONT
1 stop13h 46mDelta
Deal found 12/16$1,087
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Tue 12/306:04 amONT - YUL
1 stop7h 46mUnited Airlines
Sat 1/36:00 amYUL - ONT
1 stop19h 25mUnited Airlines
Deal found 12/16$1,110
This American Airlines deal was found by Cheapflights users on 12/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1610:34 pmONT - YUL
1 stop12h 15mAmerican Airlines
Sat 12/204:00 pmYUL - ONT
1 stop9h 14mAmerican Airlines
Deal found 12/16$1,126
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2011:59 pmONT - YUL
1 stop11h 01mUnited Airlines
Wed 12/244:45 pmYUL - ONT
1 stop8h 40mUnited Airlines
Deal found 12/17$1,135
This United Airlines deal was found by Cheapflights users on 12/15. 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 12/226:04 amONT - YUL
1 stop7h 46mUnited Airlines
Mon 1/54:45 pmYUL - ONT
1 stop8h 40mUnited Airlines
Deal found 12/15$1,142
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:00 amONT - YUL
2 stops14h 59mDelta
Tue 12/307:00 amYUL - ONT
2 stops19h 23mDelta
Deal found 12/17$1,146
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Thu 12/256:04 amONT - YUL
1 stop7h 46mUnited Airlines
Thu 1/16:00 amYUL - ONT
1 stop19h 25mUnited Airlines
Deal found 12/16$1,174
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Thu 12/1811:59 pmONT - YUL
1 stop11h 01mUnited Airlines
Sun 12/216:00 amYUL - ONT
1 stop19h 25mUnited Airlines
Deal found 12/16$1,183

Find 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$434
(American Airlines)

One-way from

$118
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$762
Provider with most accurate pricing for Ontario-Montreal Pierre Elliott Trudeau Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Montreal Pierre Elliott Trudeau Intl flights.
Search Deals
From Ontario to Montreal Pierre Elliott Trudeau Intl
Search Deals
One-way flight from Ontario to Montreal Pierre Elliott Trudeau Intl
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($130 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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 1/31

4:45 pm-1:45 pm

2 stops18h 00m

Montreal Pierre Elliott Trudeau Intl

Sat 2/7

7:30 am-6:20 pm

2 stops13h 50m

$487

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 1/14

6:22 am-10:44 pm

2 stops13h 22m

Montreal Pierre Elliott Trudeau Intl

Wed 1/21

7:30 am-6:20 pm

2 stops13h 50m

$511

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 1/14

12:41 pm-8:44 am

2 stops17h 03m

Montreal Pierre Elliott Trudeau Intl

Tue 1/20

9:34 am-9:05 pm

2 stops14h 31m

$525

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 2/7

10:30 pm-8:44 am

2 stops31h 14m

Montreal Pierre Elliott Trudeau Intl

Wed 2/11

9:34 am-9:05 pm

2 stops14h 31m

$525

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 2/5

10:30 pm-6:37 pm

2 stops17h 07m

Montreal Pierre Elliott Trudeau Intl

Mon 2/9

9:34 am-11:31 am

2 stops28h 57m

$546

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Mon 1/12

4:45 pm-1:45 pm

2 stops18h 00m

Montreal Pierre Elliott Trudeau Intl

Tue 1/13

3:50 pm-9:08 am

2 stops20h 18m

$567

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 1/8

10:30 pm-6:37 pm

2 stops17h 07m

Montreal Pierre Elliott Trudeau Intl

Wed 1/14

9:34 am-9:05 pm

2 stops14h 31m

$596

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Fri 1/9

12:41 pm-8:44 am

2 stops17h 03m

Montreal Pierre Elliott Trudeau Intl

Sat 1/17

2:25 pm-11:31 am

2 stops24h 06m

$611

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 1/13

5:05 am-7:32 am

2 stops23h 27m

Montreal Pierre Elliott Trudeau Intl

Sat 1/17

7:10 pm-12:47 pm

2 stops20h 37m

$692

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 1/22

5:05 am-2:11 pm

2 stops30h 06m

Montreal Pierre Elliott Trudeau Intl

Mon 1/26

5:30 pm-9:58 pm

2 stops31h 28m

$695

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 22 results
1
2
3

Compare providers for flights from Ontario to Pierre Elliott Trudeau Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Pierre Elliott Trudeau Intl in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Montreal Pierre Elliott Trudeau Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Montreal Pierre Elliott Trudeau Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Montreal Pierre Elliott Trudeau Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Montreal Pierre Elliott Trudeau Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Montreal Pierre Elliott Trudeau Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, February is the cheapest month in which you can book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport (average of $152). Flying from Ontario to Montreal Pierre Elliott Trudeau Intl Airport in September is currently the most expensive (average of $224). 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 December 18, 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 at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 46% 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 December 18, 2025.
Read through reviews of airlines operating flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport, such as United Airlines and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,092 reviews

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
9,092 reviews
United Airlines
7.4
Good
9,092 reviews

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.1
Good
10,534 reviews
United Airlines
7.4
Good
9,092 reviews

Entertainment

7.1

Boarding

7.7

Overall

7.4

Food

6.6

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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. 2 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 03m. Fly via American Airlines or Delta 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. An alternate airline flying to your destination would be 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, February is the cheapest month in which you can book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport (average of $152). Flying from Ontario to Montreal Pierre Elliott Trudeau Intl Airport in September is currently the most expensive (average of $224). 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
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 2 airlines flying from Ontario to Pierre Elliott Trudeau Intl

Discover the top 2 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$219Average$614FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$419Average$600FlexibilityNo cancel feeOn-time67%

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