$279+ Cheap flights from Islip, NY (ISP) to Pierre Elliott Trudeau Intl (YUL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — YUL
Nov 22 — Nov 291
Round-trip
1 adult, Economy
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Find cheap flights from Islip to Pierre Elliott Trudeau Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Islip to Pierre Elliott Trudeau Intl
Cheapest
Best
One-way
Cheapest flights from Islip to Pierre Elliott Trudeau IntlExplore 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 October 23, 2026.
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 October 23, 2026.
This Expedia deal was found by Cheapflights users on 10/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:00 am -
1 stop10h 32m
Sat 12/128:00 am -
1 stop14h 04m
Deal found 10/21![Multiple Airlines logo]()
$1,080
This Travelocity deal was found by Cheapflights users on 10/21. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/316:00 am -
1 stop10h 32m
Thu 1/78:00 am -
1 stop13h 56m
Deal found 10/21![Multiple Airlines logo]()
$1,174
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 12/3011:26 am -
2 stops23h 10m
Wed 1/68:45 am -
1 stop30h 26m
Deal found 10/21![Multiple Airlines logo]()
$1,215
This Expedia deal was found by Cheapflights users on 10/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/66:00 am -
1 stop10h 32m
Sun 12/138:00 am -
1 stop14h 04m
Deal found 10/22![Multiple Airlines logo]()
$1,356
This FlightHub deal was found by Cheapflights users on 10/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/296:00 am -
1 stop10h 32m
Tue 1/56:45 am -
2 stops27h 34m
Deal found 10/21![Multiple Airlines logo]()
$1,434
This Expedia deal was found by Cheapflights users on 10/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/166:00 am -
2 stops16h 17m
Fri 12/188:00 am -
1 stop13h 50m
Deal found 10/22![Multiple Airlines logo]()
$1,542
This Expedia deal was found by Cheapflights users on 10/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/196:00 am -
1 stop10h 32m
Mon 12/215:25 pm -
2 stops16h 27m
Deal found 10/18![Multiple Airlines logo]()
$1,809
Best flights from Islip to Pierre Elliott Trudeau IntlDiscover carefully curated flight deals from Islip to Pierre Elliott Trudeau Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.
Discover carefully curated flight deals from Islip to Pierre Elliott Trudeau Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.
This Expedia deal was found by Cheapflights users on 10/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:00 am -
1 stop10h 32m
Sat 12/128:00 am -
1 stop14h 04m
Deal found 10/21![Multiple Airlines logo]()
$1,080
This Expedia deal was found by Cheapflights users on 10/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/66:00 am -
1 stop10h 32m
Sun 12/138:00 am -
1 stop14h 04m
Deal found 10/22![Multiple Airlines logo]()
$1,356
This FlightHub deal was found by Cheapflights users on 10/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/296:00 am -
1 stop10h 32m
Tue 1/56:45 am -
2 stops27h 34m
Deal found 10/21![Multiple Airlines logo]()
$1,434
This Expedia deal was found by Cheapflights users on 10/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/166:00 am -
2 stops16h 17m
Fri 12/188:00 am -
1 stop13h 50m
Deal found 10/22![Multiple Airlines logo]()
$1,542
This Expedia deal was found by Cheapflights users on 10/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/196:00 am -
1 stop10h 32m
Mon 12/215:25 pm -
2 stops16h 27m
Deal found 10/18![Multiple Airlines logo]()
$1,809
This FlightHub deal was found by Cheapflights users on 10/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/316:35 pm -
1 stop21h 53m
Thu 1/75:25 pm -
2 stops16h 54m
Deal found 10/21![Multiple Airlines logo]()
$1,860
One-way flights from Islip to Pierre Elliott Trudeau IntlSearch for one-way flight options from Islip to Pierre Elliott Trudeau Intl. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.
Search for one-way flight options from Islip to Pierre Elliott Trudeau Intl. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 12/66:49 pm -
3 stops27h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 10/19. 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 12/310:57 am -
3 stops37h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Multiple Airlines logo]()
$308
This Expedia deal was found by Cheapflights users on 10/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:00 am -
2 stops16h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![Multiple Airlines logo]()
$389
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 October 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,080 (Expedia) |
One-way from | $279 (Kiwi.com) |
Popular in | December |
Cheapest in | March |
Average price | $346 |
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 7,457,451 searches. Data last updated October 23, 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
Cheapest round-trip
IslipMontreal
ISP Islip Long Island - YUL Montreal Pierre Elliott Trudeau Intl
ISPYUL
Islip Long Island
Sun 12/6
6:49 pm-10:17 pm
3 stops27h 28m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$279
IslipMontreal
ISP Islip Long Island - YUL Montreal Pierre Elliott Trudeau Intl
ISPYUL
Islip Long Island
Thu 12/3
10:57 am-12:32 am
3 stops37h 35m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$308
Quickest round-trip
IslipMontreal
ISP Islip Long Island - YUL Montreal Pierre Elliott Trudeau Intl
ISPYUL
Islip Long Island
Wed 12/2
6:00 am-10:17 pm
2 stops16h 17m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$389
IslipMontreal
ISP Islip Long Island - YUL Montreal Pierre Elliott Trudeau Intl
ISPYUL
Islip Long Island
Sat 12/5
6:00 am-4:32 pm
1 stop10h 32m
Montreal Pierre Elliott Trudeau Intl
Sat 12/12
8:00 am-10:04 pm
1 stop14h 04m
$1,080
IslipMontreal
ISP Islip Long Island - YUL Montreal Pierre Elliott Trudeau Intl
ISPYUL
Islip Long Island
Sun 12/6
6:00 am-4:32 pm
1 stop10h 32m
Montreal Pierre Elliott Trudeau Intl
Sun 12/13
8:00 am-10:04 pm
1 stop14h 04m
$1,356
IslipMontreal
ISP Islip Long Island - YUL Montreal Pierre Elliott Trudeau Intl
ISPYUL
Islip Long Island
Tue 12/29
6:00 am-4:32 pm
1 stop10h 32m
Montreal Pierre Elliott Trudeau Intl
Tue 1/5
6:45 am-10:19 am
2 stops27h 34m
$1,434
IslipMontreal
ISP Islip Long Island - YUL Montreal Pierre Elliott Trudeau Intl
ISPYUL
Islip Long Island
Wed 12/16
6:00 am-10:17 pm
2 stops16h 17m
Montreal Pierre Elliott Trudeau Intl
Fri 12/18
8:00 am-9:50 pm
1 stop13h 50m
$1,542
IslipMontreal
ISP Islip Long Island - YUL Montreal Pierre Elliott Trudeau Intl
ISPYUL
Islip Long Island
Sat 12/19
6:00 am-4:32 pm
1 stop10h 32m
Montreal Pierre Elliott Trudeau Intl
Mon 12/21
5:25 pm-9:52 am
2 stops16h 27m
$1,809
IslipMontreal
ISP Islip Long Island - YUL Montreal Pierre Elliott Trudeau Intl
ISPYUL
Islip Long Island
Thu 12/31
6:35 pm-4:28 pm
1 stop21h 53m
Montreal Pierre Elliott Trudeau Intl
Thu 1/7
5:25 pm-10:19 am
2 stops16h 54m
$1,860
Sorted by cheapest first
- 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.
ISP-YUL
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.
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 locationsCornwall
Longueuil
Laval
Dorval
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