When did momondo last update prices for flights from Islip Long Island Airport to Ontario?

Prices for flights from Islip Long Island Airport to Ontario were last updated today.

How old do you have to be to fly from Islip Long Island Airport to Ontario?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Islip Long Island Airport to Ontario.

What documentation or ID do you need to fly to Ontario?

The necessary travel and health documents for your Ontario trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$165 Cheap Flights from Islip to Ontario in 2026

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Find the cheapest flights from Islip, New York to Ontario

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:42 pm - 11:35 am

ISP

YYZ

21h 53m

2 stops

2:20 pm - 9:48 am

YYZ

ISP

19h 28m

1 stop

$459Multiple Airlines

Fri, Mar 20 - Fri, Mar 27

4:34 pm - 4:20 pm

ISP

YUL

23h 46m

2 stops

4:35 pm - 12:33 pm

YUL

ISP

19h 58m

1 stop

$527Multiple Airlines

Sun, Mar 22 - Sun, Mar 29

4:34 pm - 12:30 am

ISP

YUL

7h 56m

1 stop

4:35 pm - 12:33 pm

YUL

ISP

19h 58m

1 stop

$569Multiple Airlines

Sun, Mar 22 - Sun, Mar 29

1:42 pm - 12:30 am

ISP

YUL

10h 48m

1 stop

10:15 am - 9:48 am

YUL

ISP

23h 33m

2 stops

$616Multiple Airlines

Fri, Mar 20 - Fri, Mar 27

1:42 pm - 12:14 am

ISP

YYZ

10h 32m

1 stop

2:20 pm - 9:48 am

YYZ

ISP

19h 28m

1 stop

$633Multiple Airlines

Fri, Mar 20 - Fri, Mar 27

1:42 pm - 12:30 am

ISP

YUL

10h 48m

1 stop

4:00 pm - 6:55 pm

YUL

ISP

26h 55m

1 stop

$656Multiple Airlines

Fri, Mar 20 - Fri, Mar 27

9:59 am - 5:45 pm

ISP

YUL

7h 46m

2 stops

8:25 pm - 6:44 pm

YUL

ISP

22h 19m

2 stops

$1,646Multiple Airlines

Mon, Feb 16 - Mon, Feb 16

momondo Fare Finder

Use the filters below to find and compare flights from Islip, New York to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Fri 3/20

1:42 pm-11:35 am

2 stops21h 53m

Toronto Pearson Intl

Fri 3/27

2:20 pm-9:48 am

1 stop19h 28m

$459

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Sun 3/22

4:34 pm-4:20 pm

2 stops23h 46m

Montreal Pierre Elliott Trudeau Intl

Sun 3/29

4:35 pm-12:33 pm

1 stop19h 58m

$527

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Sun 3/22

4:34 pm-12:30 am

1 stop7h 56m

Montreal Pierre Elliott Trudeau Intl

Sun 3/29

4:35 pm-12:33 pm

1 stop19h 58m

$569

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Fri 3/20

1:42 pm-12:30 am

1 stop10h 48m

Montreal Pierre Elliott Trudeau Intl

Fri 3/27

10:15 am-9:48 am

2 stops23h 33m

$616

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Fri 3/20

1:42 pm-12:14 am

1 stop10h 32m

Toronto Pearson Intl

Fri 3/27

2:20 pm-9:48 am

1 stop19h 28m

$633

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Fri 3/20

1:42 pm-12:30 am

1 stop10h 48m

Montreal Pierre Elliott Trudeau Intl

Fri 3/27

4:00 pm-6:55 pm

1 stop26h 55m

$656

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Mon 2/16

9:59 am-5:45 pm

2 stops7h 46m

Montreal Pierre Elliott Trudeau Intl

Mon 2/16

8:25 pm-6:44 pm

2 stops22h 19m

$1,646

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Thu 4/16

4:07 pm-2:05 pm

2 stops21h 58m

$165

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Mon 4/20

4:07 pm-2:16 pm

1 stop22h 09m

$168

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Mon 4/20

4:07 pm-2:05 pm

2 stops21h 58m

$169

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

How to get the cheapest flight ticket from Islip, New York to Region of Ontario

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 airlines fly to Region of Ontario?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Region of Ontario from Islip, New York according to our data. Air Canada is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 8 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.

Cheap Islip, New York to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to Region of Ontario

Fastest flight time	7h 46m
Direct flights	None

The fastest flight from Islip, New York to Region of Ontario takes 7h 46m

There are no direct flights from Islip, New York to Region of Ontario. There are no popular flight routes from Islip, New York to Region of Ontario.

Search flight deals

When did momondo last update prices for flights from Islip Long Island Airport to Ontario?
Prices for flights from Islip Long Island Airport to Ontario were last updated today.
How old do you have to be to fly from Islip Long Island Airport to Ontario?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Islip Long Island Airport to Ontario.
What documentation or ID do you need to fly to Ontario?
The necessary travel and health documents for your Ontario trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

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 Ontario from Islip.

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

Yes. momondo allows you to filter the results for Islip to Ontario flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Islip to Ontario.

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

Price alerts on flights to Ontario from Islip are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.