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Pierre Elliott Trudeau Intl

$187+ 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 3/29. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — YUL
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This American Airlines deal was found by Cheapflights users on 1/28. 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 4/184:52 pm
ONT
-
YUL
2 stops15h 52m
American Airlines
Sat 4/257:45 am
YUL
-
ONT
2 stops14h 47m
American Airlines
Deal found 1/28$566
This Delta deal was found by Cheapflights users on 1/28. 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.
Fri 2/271:15 pm
ONT
-
YUL
2 stops16h 27m
Delta
Tue 3/39:29 am
YUL
-
ONT
2 stops14h 36m
Delta
Deal found 1/28$611
This Delta deal was found by Cheapflights users on 1/28. 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 5/612:49 pm
ONT
-
YUL
2 stops16h 54m
Delta
Wed 5/139:28 am
YUL
-
ONT
2 stops15h 41m
Delta
Deal found 1/28$631
This Delta deal was found by Cheapflights users on 1/28. 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.
Sun 3/110:20 pm
ONT
-
YUL
2 stops17h 15m
Delta
Wed 3/49:29 am
YUL
-
ONT
2 stops14h 36m
Delta
Deal found 1/28$662
This American Airlines deal was found by Cheapflights users on 1/27. 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 5/77:35 pm
ONT
-
YUL
2 stops37h 09m
American Airlines
Tue 5/1912:30 pm
YUL
-
ONT
2 stops23h 09m
American Airlines
Deal found 1/27$665
This Delta deal was found by Cheapflights users on 1/29. 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.
Fri 3/1312:57 pm
ONT
-
YUL
1 stop7h 48m
Delta
Wed 3/189:20 am
YUL
-
ONT
2 stops14h 40m
Delta
Deal found 1/29$671
This Delta deal was found by Cheapflights users on 1/27. 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.
Fri 5/87:00 am
ONT
-
YUL
2 stops22h 43m
Delta
Wed 5/139:28 am
YUL
-
ONT
2 stops15h 41m
Delta
Deal found 1/27$672
This Delta deal was found by Cheapflights users on 1/27. 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.
Tue 5/127:00 am
ONT
-
YUL
2 stops22h 43m
Delta
Fri 5/1512:45 pm
YUL
-
ONT
1 stop12h 24m
Delta
Deal found 1/27$680
This Delta deal was found by Cheapflights users on 1/27. 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.
Tue 5/1210:59 pm
ONT
-
YUL
2 stops16h 54m
Delta
Mon 5/183:00 pm
YUL
-
ONT
2 stops11h 44m
Delta
Deal found 1/27$686
This Delta deal was found by Cheapflights users on 1/27. 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.
Sat 5/912:00 pm
ONT
-
YUL
2 stops22h 39m
Delta
Tue 5/199:28 am
YUL
-
ONT
2 stops15h 41m
Delta
Deal found 1/27$691

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$566
(American Airlines)

One-way from

$187
(Trip.com)

Popular in

December

Cheapest in

March

Average price

$524
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. 15% potential increase in price ($86 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 29, 2026.
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

Wed 5/6

12:49 pm-8:43 am

2 stops16h 54m

Montreal Pierre Elliott Trudeau Intl

Wed 5/13

9:28 am-10:09 pm

2 stops15h 41m

$631

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 5/9

12:00 pm-8:43 am

2 stops17h 43m

Montreal Pierre Elliott Trudeau Intl

Wed 5/13

9:28 am-10:09 pm

2 stops15h 41m

$631

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 4/18

10:26 pm-10:58 pm

1 stop21h 32m

Montreal Pierre Elliott Trudeau Intl

Sat 4/25

7:45 am-7:32 pm

2 stops14h 47m

$658

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Fri 5/8

7:00 am-8:43 am

2 stops22h 43m

Montreal Pierre Elliott Trudeau Intl

Wed 5/13

9:28 am-10:09 pm

2 stops15h 41m

$672

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 2/28

10:20 pm-6:35 pm

2 stops17h 15m

Montreal Pierre Elliott Trudeau Intl

Thu 3/5

12:30 pm-9:05 pm

1 stop11h 35m

$680

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sun 3/1

1:15 pm-11:45 pm

1 stop7h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 3/3

9:29 am-9:05 pm

2 stops14h 36m

$680

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 3/18

12:57 pm-11:45 pm

1 stop7h 48m

Montreal Pierre Elliott Trudeau Intl

Tue 3/24

9:20 am-9:00 pm

2 stops14h 40m

$680

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Fri 2/27

1:15 pm-8:42 am

2 stops16h 27m

Montreal Pierre Elliott Trudeau Intl

Thu 3/5

12:30 pm-9:05 pm

1 stop11h 35m

$680

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 3/24

10:25 pm-6:35 pm

2 stops17h 10m

Montreal Pierre Elliott Trudeau Intl

Mon 3/30

12:42 pm-9:00 pm

1 stop11h 18m

$680

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sun 3/1

10:20 pm-11:25 am

1 stop10h 05m

Montreal Pierre Elliott Trudeau Intl

Wed 3/4

9:29 am-9:05 pm

2 stops14h 36m

$680

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 21 results
1
2
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  • Most accurate provider: When it comes to deals on Ontario-Montreal Pierre Elliott Trudeau Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Montreal Pierre Elliott Trudeau Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 $259). 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.

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 January 29, 2026.
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
9,215 reviews

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Entertainment

7.1

Overall

7.4

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
9,215 reviews
United Airlines
7.4
Good
9,215 reviews

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Entertainment

7.1

Overall

7.4

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
10,667 reviews
United Airlines
7.4
Good
9,215 reviews

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Entertainment

7.1

Overall

7.4

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 16h 54m. Fly via Delta or American 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. 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 $259). 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$219Average$614FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$419Average$600FlexibilityNo cancel feeOn-time67%

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