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Cheap flights from Islip, New York to Montreal from $507

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to Montreal departing on 1/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Islip, New York to Montreal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:43 pm - 12:30 am
ISP
-
YUL
26h 47m1 stop
Multiple Airlines Logo
6:02 pm - 11:59 am
YUL
-
ISP
17h 57m2 stops
$507Multiple Airlines
Fri, Jan 23 - Mon, Feb 2
Multiple Airlines Logo
9:52 am - 12:30 am
ISP
-
YUL
14h 38m1 stop
Multiple Airlines Logo
3:55 pm - 6:55 pm
YUL
-
ISP
27h 00m1 stop
$530Multiple Airlines
Sun, Jan 18 - Fri, Jan 23
Multiple Airlines Logo
11:55 am - 12:30 am
ISP
-
YUL
12h 35m2 stops
Multiple Airlines Logo
3:55 pm - 6:55 pm
YUL
-
ISP
27h 00m1 stop
$578Multiple Airlines
Sun, Jan 18 - Fri, Jan 23
Multiple Airlines Logo
3:34 pm - 9:20 am
ISP
-
YUL
17h 46m2 stops
Multiple Airlines Logo
4:35 pm - 7:38 am
YUL
-
ISP
15h 03m1 stop
$695Multiple Airlines
Thu, Feb 19 - Sun, Feb 22
Multiple Airlines Logo
7:25 am - 5:45 pm
ISP
-
YUL
10h 20m2 stops
Multiple Airlines Logo
8:55 am - 7:45 pm
YUL
-
ISP
10h 50m2 stops
$1,003Multiple Airlines
Fri, Jan 23 - Mon, Feb 2

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to Montreal Pierre Elliott Trudeau Intl Airport 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, momondo users made 832,500 searches. Data last updated January 8, 2026.
Use the filters below to find and compare flights from Islip, New York 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 1/23

9:43 pm-12:30 am

1 stop26h 47m

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

6:02 pm-11:59 am

2 stops17h 57m

$507

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Sun 1/18

9:52 am-12:30 am

1 stop14h 38m

Montreal Pierre Elliott Trudeau Intl

Fri 1/23

3:55 pm-6:55 pm

1 stop27h 00m

$530

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Sun 1/18

11:55 am-12:30 am

2 stops12h 35m

Montreal Pierre Elliott Trudeau Intl

Fri 1/23

3:55 pm-6:55 pm

1 stop27h 00m

$578

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Thu 2/19

3:34 pm-9:20 am

2 stops17h 46m

Montreal Pierre Elliott Trudeau Intl

Sun 2/22

4:35 pm-7:38 am

1 stop15h 03m

$695

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Fri 1/23

7:25 am-5:45 pm

2 stops10h 20m

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

8:55 am-7:45 pm

2 stops10h 50m

$1,003

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Montreal from

How to get the cheapest flight ticket from Islip, New York to Montreal Pierre Elliott Trudeau Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Montreal Pierre Elliott Trudeau Intl Airport?

The cheapest day to depart from Islip, New York to Montreal Pierre Elliott Trudeau Intl Airport is on a Friday. Travelers who choose to depart for Montreal Pierre Elliott Trudeau Intl Airport on a Friday will often find tickets for as low as $487. Flights from Islip, New York to Montreal Pierre Elliott Trudeau Intl Airport on a Saturday will generally be more expensive and average around $603. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Montreal Pierre Elliott Trudeau Intl Airport?

At noon is the cheapest time of day to fly from Islip, New York to Montreal Pierre Elliott Trudeau Intl Airport when you can find flight prices for as low as $445. Flying to Montreal Pierre Elliott Trudeau Intl Airport at noon is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive with an average ticket price of $593.

When to book flights from Islip, New York to Montreal Pierre Elliott Trudeau Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to Montreal Pierre Elliott Trudeau Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip, New York to Montreal Pierre Elliott Trudeau Intl Airport (ISP to YUL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to Montreal Pierre Elliott Trudeau Intl Airport

Fastest flight time

10h 42m

Direct flights

None
The fastest flight from Islip, New York to Montreal Pierre Elliott Trudeau Intl Airport takes 10h 42m
There are no direct flights from Islip, New York to Montreal Pierre Elliott Trudeau Intl Airport. There are no popular flight routes from Islip, New York to Montreal Pierre Elliott Trudeau Intl Airport.
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  • How far is Islip Long Island to Montreal Pierre Elliott Trudeau Intl by plane?

    A flight from Islip Long Island to Montreal Pierre Elliott Trudeau Intl will travel around 327.8 mi. Flights usually cover this in 10h 42m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Islip Long Island Airport to Montreal Pierre Elliott Trudeau Intl Airport?

    Prices for flights from Islip Long Island Airport to Montreal Pierre Elliott Trudeau Intl Airport are updated daily.

  • How old do you have to be to fly from Islip Long Island Airport to Montreal Pierre Elliott Trudeau Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to Montreal Pierre Elliott Trudeau Intl Airport.

  • What documentation or ID do you need to fly to Montreal Pierre Elliott Trudeau Intl Airport?

    The required travel and health documents for your Montreal Pierre Elliott Trudeau Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Montreal Pierre Elliott Trudeau Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Montreal?

Book flights to Montreal if you plan to visit one of these locations
Laval
Dorval
Longueuil
Brossard
Trois-Rivières
Magog
Cornwall
Sherbrooke
Boucherville
Drummondville
Bromont
Montebello
Saint-Jean-sur-Richelieu
Saint-Sauveur
North Hatley
Sutton

Why use momondo?

Why should I use momondo to find a flight deal from Islip to Montreal?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Montreal from Islip.

Can I find flights from Islip to Montreal with flexible booking policies on momondo?

All flight searches from Islip to Montreal on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Islip to Montreal?

Once all potential Islip to Montreal flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Islip to Montreal right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Montreal, momondo offers a useful price alert feature which will track prices for flights to Montreal from Islip and alert you when they change.

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