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$305+ Cheap flights from Islip, NY (ISP) to Montreal (YMQ)

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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — YMQ
Jun 20 — Jun 271
Sat 6/20
Sat 6/27
1 adult, Economy
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Cheap flight deals from Islip to Montreal

Cheapest flights from Islip to Montreal
Explore the most affordable flight options available from Islip to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/210:00 am
ISP
-
YUL
1 stop8h 15m
Multiple Airlines
Thu 7/97:20 pm
YUL
-
ISP
2 stops38h 38m
Multiple Airlines
Deal found 5/18$768
This Kiwi.com deal was found by Cheapflights users on 5/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1510:00 am
ISP
-
YUL
1 stop8h 15m
Multiple Airlines
Mon 6/2212:50 pm
YUL
-
ISP
2 stops22h 06m
Multiple Airlines
Deal found 5/16$771
This Kiwi.com deal was found by Cheapflights users on 5/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/69:00 am
ISP
-
YUL
1 stop9h 15m
Multiple Airlines
Sun 6/77:20 pm
YUL
-
ISP
2 stops18h 08m
Multiple Airlines
Deal found 5/18$832
This Kiwi.com deal was found by Cheapflights users on 5/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/107:00 am
ISP
-
YUL
1 stop11h 15m
Multiple Airlines
Mon 7/135:45 pm
YUL
-
ISP
2 stops22h 11m
Multiple Airlines
Deal found 5/18$854
This Kiwi.com deal was found by Cheapflights users on 5/19. 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.
Sat 5/306:09 pm
ISP
-
YUL
2 stops23h 34m
Multiple Airlines
Sat 6/67:20 pm
YUL
-
ISP
1 stop15h 10m
Multiple Airlines
Deal found 5/19$886
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 7/43:05 pm
ISP
-
YUL
1 stop27h 10m
Multiple Airlines
Sat 7/117:20 pm
YUL
-
ISP
1 stop15h 10m
Multiple Airlines
Deal found 5/20$914
This Kiwi.com deal was found by Cheapflights users on 5/19. 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.
Sat 5/307:25 am
ISP
-
YUL
1 stop10h 50m
Multiple Airlines
Tue 6/3010:35 am
YUL
-
ISP
2 stops7h 06m
Multiple Airlines
Deal found 5/19$957

Find flight deals from Islip to Montreal

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Montreal (YMQ). 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 May 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$768
(Kiwi.com)

One-way from

$305
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$364
Provider with most accurate pricing for Islip Long Island-Montreal (YMQ) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Islip Long Island-Montreal (YMQ) flights.
Search Deals
From Islip Long Island to Montreal (YMQ)
Search Deals
One-way flight from Islip Long Island to Montreal (YMQ)
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Montreal 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 May 21, 2026.
Use the filters below to find and compare flights from Islip to Montreal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Thu 7/2

10:00 am-6:15 pm

1 stop8h 15m

Montreal Pierre Elliott Trudeau Intl

Thu 7/9

7:20 pm-9:58 am

2 stops38h 38m

$768

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Mon 6/15

10:00 am-6:15 pm

1 stop8h 15m

Montreal Pierre Elliott Trudeau Intl

Mon 6/22

12:50 pm-10:56 am

2 stops22h 06m

$771
Quickest round-trip

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Sat 6/6

9:00 am-6:15 pm

1 stop9h 15m

Montreal Pierre Elliott Trudeau Intl

Sun 6/7

7:20 pm-1:28 pm

2 stops18h 08m

$832

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Fri 7/10

7:00 am-6:15 pm

1 stop11h 15m

Montreal Pierre Elliott Trudeau Intl

Mon 7/13

5:45 pm-3:56 pm

2 stops22h 11m

$854

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Sat 7/4

3:05 pm-12:10 pm

2 stops21h 05m

Montreal Pierre Elliott Trudeau Intl

Sat 7/11

7:20 pm-10:30 am

1 stop15h 10m

$959
Cheapest one-way
Quickest one-way

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Fri 9/25

11:08 am-12:25 am

3 stops13h 17m

$305

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/17

Sorted by cheapest first

Compare providers for flights from Islip to Montreal

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 Islip to Montreal in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 Islip, New York-Montreal 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 flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Montreal flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Montreal 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 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 Montreal

Have a flexible travel schedule? Discover the best time to fly to Montreal 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.

Cheapflights Insights

Everything you need to know about your flight from Islip to Montreal
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Islip to Montreal. 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?

    Most people fly from Islip Long Island (ISP) if they book a flight from Islip to Montreal. On average, Long Island has 0 outbound flights to Montreal per day from 0 airlines. Islip Long Island is conveniently located just 7.2 mi from Islip’s city center.

  • Can I find deals for flights from Islip to Montreal that include hotel bookings?

    Yes. In addition to deals on Islip to Montreal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to Montreal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Montreal.

  • Can I find deals for business class flights from Islip to Montreal?

    Yes. Cheapflights offers flight deals from Islip to Montreal 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

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