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.

$149 Cheap Flights from Islip to Ontario in 2025/26

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Find the cheapest flights from Islip, New York to Ontario

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:29 pm - 2:20 pmISP-YYZ

17h 51m1 stop

8:20 pm - 1:39 pmYYZ-ISP

41h 19m2 stops

$376Multiple Airlines

Find Deal

Tue, Dec 16 - Tue, Dec 23

8:29 pm - 2:20 pmISP-YYZ

17h 51m1 stop

8:20 pm - 4:37 pmYYZ-ISP

20h 17m1 stop

$434Multiple Airlines

Find Deal

Tue, Dec 16 - Tue, Dec 23

9:39 am - 9:19 pmISP-YYZ

11h 40m1 stop

8:15 pm - 10:37 amYYZ-ISP

14h 22m1 stop

$453Multiple Airlines

Find Deal

Fri, Nov 14 - Sun, Nov 16

7:20 pm - 12:43 amISP-YUL

29h 23m2 stops

3:55 pm - 11:59 amYUL-ISP

20h 04m1 stop

$474Multiple Airlines

Find Deal

Mon, Jan 26 - Mon, Feb 2

12:20 pm - 12:30 amISP-YUL

12h 10m1 stop

4:35 pm - 4:37 pmYUL-ISP

24h 02m1 stop

$572Multiple Airlines

Find Deal

Thu, Dec 25 - Tue, Dec 30

10:38 am - 12:45 amISP-YUL

14h 07m2 stops

4:35 pm - 4:37 pmYUL-ISP

24h 02m1 stop

$591Multiple Airlines

Find Deal

Thu, Dec 25 - Tue, Dec 30

9:39 am - 9:19 pmISP-YYZ

11h 40m1 stop

7:15 am - 8:42 pmYYZ-ISP

13h 27m2 stops

$629Multiple Airlines

Find Deal

Fri, Nov 14 - Sun, Nov 16

12:40 pm - 5:05 pmISP-YUL

4h 25m1 stop

1:25 pm - 7:45 pmYUL-ISP

6h 20m1 stop

$2,555Multiple Airlines

Find Deal

Mon, Jan 26 - Mon, Feb 2

12:40 pm - 9:42 pmISP-YUL

9h 02m2 stops

6:25 pm - 4:15 pmYUL-ISP

21h 50m2 stops

$2,570Multiple Airlines

Find Deal

Thu, Dec 25 - Tue, Dec 30

12:40 pm - 9:42 pmISP-YUL

9h 02m2 stops

6:00 am - 7:45 pmYUL-ISP

13h 45m3 stops

$2,635Multiple Airlines

Find Deal

Thu, Dec 25 - Tue, Dec 30

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

Tue 12/16

8:29 pm-2:20 pm

1 stop17h 51m

Toronto Pearson Intl

Tue 12/23

8:20 pm-1:39 pm

2 stops41h 19m

$376

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Tue 12/16

8:29 pm-2:20 pm

1 stop17h 51m

Toronto Pearson Intl

Tue 12/23

8:20 pm-4:37 pm

1 stop20h 17m

$434

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Fri 11/14

9:39 am-9:19 pm

1 stop11h 40m

Toronto Pearson Intl

Sun 11/16

8:15 pm-10:37 am

1 stop14h 22m

$453

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Mon 1/26

7:20 pm-12:43 am

2 stops29h 23m

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

3:55 pm-11:59 am

1 stop20h 04m

$474

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Thu 12/25

12:20 pm-12:30 am

1 stop12h 10m

Montreal Pierre Elliott Trudeau Intl

Tue 12/30

4:35 pm-4:37 pm

1 stop24h 02m

$572

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Thu 12/25

10:38 am-12:45 am

2 stops14h 07m

Montreal Pierre Elliott Trudeau Intl

Tue 12/30

4:35 pm-4:37 pm

1 stop24h 02m

$591

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Fri 11/14

9:39 am-9:19 pm

1 stop11h 40m

Toronto Pearson Intl

Sun 11/16

7:15 am-8:42 pm

2 stops13h 27m

$629

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Mon 1/26

12:40 pm-5:05 pm

1 stop4h 25m

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

1:25 pm-7:45 pm

1 stop6h 20m

$2,555

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Thu 12/25

12:40 pm-9:42 pm

2 stops9h 02m

Montreal Pierre Elliott Trudeau Intl

Tue 12/30

6:25 pm-4:15 pm

2 stops21h 50m

$2,570

IslipMontreal

ISP - YUL

ISPYUL

Islip Long Island

Thu 12/25

12:40 pm-9:42 pm

2 stops9h 02m

Montreal Pierre Elliott Trudeau Intl

Tue 12/30

6:00 am-7:45 pm

3 stops13h 45m

$2,635

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 7 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

Direct flights	None

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.