Cheap flights from Islip, NY to Montreal Pierre Elliott Trudeau Intl Airport from C$ 829
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 29/10. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap 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 12 June 2025.
Find flight deals from Islip to Pierre Elliott Trudeau Intl
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 12 June 2025.
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 12 June 2025.
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 629,999 searches. Data last updated 12 June 2025.
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
IslipMontreal
ISP - YUL
ISPYUL
Islip Long Island
Fri 11/7
3:59 p.m.-5:55 p.m.
2 stops25h 56m
Montreal Pierre Elliott Trudeau Intl
Mon 14/7
10:45 a.m.-10:58 a.m.
2 stops24h 13m
IslipMontreal
ISP - YUL
ISPYUL
Islip Long Island
Wed 29/10
2:19 p.m.-10:32 a.m.
2 stops20h 13m
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.
Cheapflights Insights
Everything you need to know about your flight from Islip to Montreal Pierre Elliott Trudeau Intl Airport
What is the cheapest month to book a flight from Islip, New York to Montreal Pierre Elliott Trudeau Intl Airport?
Currently, October is the cheapest month in which you can book a flight from Islip, New York to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 241). Flying from Islip, New York to Montreal Pierre Elliott Trudeau Intl Airport in April is currently the most expensive (average of C$ 316). 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.
Rainfall in Pierre Elliott Trudeau Intl by month
Plan your trip to Pierre Elliott Trudeau Intl by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Montreal Pierre Elliott Trudeau Intl Airport ranges from 64.0 - 111.0 mm per month. August is typically the wettest month, when rainfall can reach 111.0 mm. February is typically the driest time to visit Montreal Pierre Elliott Trudeau Intl Airport when rainfall is around 64.0 mm.
Temperature in Pierre Elliott Trudeau Intl by month
Plan your trip to Pierre Elliott Trudeau Intl by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Montreal Pierre Elliott Trudeau Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -9.0 C).
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.
Travelling to a place near Islip?
Book flights to Islip if you plan to visit one of these locationsBrowse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Islip to Pierre Elliott Trudeau Intl
See prices for flight routes from nearby airports that may be better suited for you.
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Islip to Pierre Elliott Trudeau Intl?
Cheapflights makes it easy to find Islip to Pierre Elliott Trudeau Intl flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Islip to Pierre Elliott Trudeau Intl?
Millions of users choose and trust Cheapflights to book the best flight deals from Islip to Pierre Elliott Trudeau Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Islip to Pierre Elliott Trudeau Intl with no change fees?
Yes, we can. To see specific flights from Islip to Pierre Elliott Trudeau Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Islip to Pierre Elliott Trudeau Intl become cheaper?
Not ready to book yet? You can track prices for flights from Islip to Pierre Elliott Trudeau Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.