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Pierre Elliott Trudeau Intl

$377+ Cheap flights from Islip, NY (ISP) 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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — YUL
Aug 24 — Aug 311
Mon 8/24
Mon 8/31
1 adult, Economy
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Cheap flight deals from Islip to Pierre Elliott Trudeau Intl

Cheapest flights from Islip to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from Islip to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Wed 8/1910:05 am
ISP
-
YUL
1 stop8h 10m
Multiple Airlines
Mon 8/318:00 pm
YUL
-
ISP
2 stops37h 53m
Multiple Airlines
Deal found 7/24$689
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Sat 8/157:05 am
ISP
-
YUL
1 stop11h 10m
Multiple Airlines
Mon 8/175:10 pm
YUL
-
ISP
2 stops18h 06m
Multiple Airlines
Deal found 7/20$729
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Wed 8/1910:05 am
ISP
-
YUL
1 stop8h 10m
Multiple Airlines
Thu 8/276:45 am
YUL
-
ISP
2 stops11h 29m
Multiple Airlines
Deal found 7/24$761
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/2010:05 am
ISP
-
YUL
1 stop8h 10m
Multiple Airlines
Thu 8/276:45 am
YUL
-
ISP
2 stops11h 29m
Multiple Airlines
Deal found 7/24$762
This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Sun 9/67:05 am
ISP
-
YUL
1 stop11h 10m
Multiple Airlines
Sun 9/136:45 am
YUL
-
ISP
2 stops26h 48m
Multiple Airlines
Deal found 7/22$765
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Wed 8/1910:05 am
ISP
-
YUL
1 stop8h 10m
Multiple Airlines
Fri 8/287:20 pm
YUL
-
ISP
2 stops22h 54m
Multiple Airlines
Deal found 7/24$766
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/2010:05 am
ISP
-
YUL
1 stop8h 10m
Multiple Airlines
Fri 8/287:20 pm
YUL
-
ISP
2 stops22h 54m
Multiple Airlines
Deal found 7/24$767
This Kiwi.com deal was found by Cheapflights users on 7/20. 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.
Fri 8/143:10 pm
ISP
-
YUL
2 stops21h 00m
Multiple Airlines
Mon 8/177:20 pm
YUL
-
ISP
1 stop15h 36m
Multiple Airlines
Deal found 7/20$790
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/2010:05 am
ISP
-
YUL
1 stop8h 10m
Multiple Airlines
Mon 8/317:00 am
YUL
-
ISP
2 stops13h 03m
Multiple Airlines
Deal found 7/24$796
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Sat 8/229:05 am
ISP
-
YUL
1 stop9h 10m
Multiple Airlines
Mon 8/317:00 am
YUL
-
ISP
2 stops13h 03m
Multiple Airlines
Deal found 7/24$797
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Fri 8/217:05 am
ISP
-
YUL
1 stop11h 10m
Multiple Airlines
Thu 8/276:45 am
YUL
-
ISP
2 stops11h 29m
Multiple Airlines
Deal found 7/24$817

Find flight deals from Islip to Pierre Elliott Trudeau Intl

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) 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 July 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$689
(Kiwi.com)

One-way from

$377
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$366
Provider with most accurate pricing for Islip Long Island-Montreal Pierre Elliott Trudeau Intl flight deals.
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Provider most trusted by Cheapflights users for Islip Long Island-Montreal Pierre Elliott Trudeau Intl flights.
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From Islip Long Island to Montreal Pierre Elliott Trudeau Intl
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One-way flight from Islip Long Island to Montreal Pierre Elliott Trudeau Intl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($7 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip 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 July 25, 2026.
Use the filters below to find and compare flights from Islip to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Sat 8/15

7:05 am-6:15 pm

1 stop11h 10m

Montreal Pierre Elliott Trudeau Intl

Mon 8/17

5:10 pm-11:16 am

2 stops18h 06m

$729

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Sun 9/6

7:05 am-6:15 pm

1 stop11h 10m

Montreal Pierre Elliott Trudeau Intl

Sun 9/13

6:45 am-9:33 am

2 stops26h 48m

$765

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Wed 8/19

10:05 am-6:15 pm

1 stop8h 10m

Montreal Pierre Elliott Trudeau Intl

Fri 8/28

7:20 pm-10:30 am

1 stop15h 10m

$818

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Sat 8/22

9:05 am-6:15 pm

1 stop9h 10m

Montreal Pierre Elliott Trudeau Intl

Thu 8/27

7:20 pm-12:30 pm

1 stop17h 10m

$818

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Thu 8/20

10:05 am-6:15 pm

1 stop8h 10m

Montreal Pierre Elliott Trudeau Intl

Wed 8/26

7:20 pm-1:30 pm

1 stop18h 10m

$822

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Wed 8/19

10:05 am-6:15 pm

1 stop8h 10m

Montreal Pierre Elliott Trudeau Intl

Sun 8/30

6:00 am-2:25 pm

2 stops8h 25m

$847

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Fri 8/14

7:05 am-6:15 pm

1 stop11h 10m

Montreal Pierre Elliott Trudeau Intl

Mon 8/17

7:20 pm-10:56 am

1 stop15h 36m

$856

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Mon 8/24

10:05 am-6:15 pm

1 stop8h 10m

Montreal Pierre Elliott Trudeau Intl

Fri 8/28

7:20 pm-10:30 am

1 stop15h 10m

$884
Quickest round-trip

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Wed 9/9

2:16 pm-8:19 pm

1 stop6h 03m

Montreal Pierre Elliott Trudeau Intl

Tue 9/15

1:15 pm-8:15 pm

1 stop7h 00m

$2,652

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Sat 8/22

9:05 am-7:03 pm

2 stops9h 58m

Montreal Pierre Elliott Trudeau Intl

Sat 8/29

11:23 am-8:59 pm

2 stops9h 36m

$2,667

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/21

Showing 1-10 of 12 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Islip, New York-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 Islip, New York-Montreal Pierre Elliott Trudeau Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-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 Islip, New York-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 Islip, New York-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 Islip to Pierre Elliott Trudeau Intl

Have a flexible travel schedule? Discover the best time to fly to Pierre Elliott Trudeau Intl from Islip 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.

Related info for your journey

Find useful and relevant information for your journey from Islip 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 Islip to Montreal Pierre Elliott Trudeau Intl?

    If you book a flight to Montreal Pierre Elliott Trudeau Intl from Islip, you will be flying from Long Island, which is the city’s only airport. Islip Long Island (ISP) is located 7.2 mi from the center of Islip. There are 0 flights from Long Island to Montreal Pierre Elliott Trudeau Intl per day from 0 different airlines.

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

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

  • How can I find direct flights from Islip 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 Islip to Pierre Elliott Trudeau Intl.

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

    Yes. Cheapflights offers flight deals from Islip 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.

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
Longueuil
Laval
Dorval

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