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Niagara Falls

$136+ Cheap flights from Islip, NY (ISP) to Niagara Falls, ON, Canada

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 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — YYZ
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from Islip to Niagara Falls

Keep the following information in mind while searching for Islip to Niagara Falls flight deals. Data was last updated October 30, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$316
(Kiwi.com)

One-way from

$136
(Kiwi.com)

Popular in

November

Cheapest in

January

Average price

$314
Provider with most accurate pricing for New York (NYC)-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for New York (NYC)-Toronto (YTO) flights.
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From Islip Long Island to Niagara Falls
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One-way flight from Islip Long Island to Niagara Falls
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Highest demand for flights based on searches. 15% potential increase in price ($51 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Islip to Niagara Falls

Cheapest flights from Islip to Niagara Falls
Explore the most affordable flight options available from Islip to Niagara Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/30. 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 12/19:02 amISP - YYZ
1 stop15h 23mMultiple Airlines
Thu 12/48:30 pmYYZ - ISP
2 stops23h 04mMultiple Airlines
Deal found 10/30$335
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 11/144:58 pmISP - YYZ
1 stop21h 22mMultiple Airlines
Mon 11/1712:50 pmYYZ - ISP
1 stop28h 52mMultiple Airlines
Deal found 10/28$355
This Trip.com deal was found by Cheapflights users on 10/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/126:00 amISP - YYZ
1 stop15h 19mMultiple Airlines
Fri 12/192:20 pmYYZ - ISP
1 stop9h 39mMultiple Airlines
Deal found 10/28$438
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 11/74:58 pmISP - YYZ
1 stop21h 22mMultiple Airlines
Mon 11/1012:50 pmYYZ - ISP
1 stop28h 52mMultiple Airlines
Deal found 10/28$464

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Niagara Falls 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 October 30, 2025.
Use the filters below to find and compare flights from Islip to Niagara Falls that are best for you.

Fly from

Islip

Fly to

Niagara Falls

Route

Depart

Return

Price

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Mon 12/1

9:02 am-12:25 am

1 stop15h 23m

Toronto Pearson Intl

Thu 12/4

8:30 pm-7:34 pm

2 stops23h 04m

$335

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Fri 11/14

4:58 pm-2:20 pm

1 stop21h 22m

Toronto Pearson Intl

Mon 11/17

12:50 pm-5:42 pm

1 stop28h 52m

$355

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Sun 11/16

9:27 pm-9:07 pm

2 stops23h 40m

$136

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Wed 11/19

8:45 pm-2:54 pm

1 stop18h 09m

$147

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Thu 11/20

10:02 am-12:11 am

1 stop14h 09m

$151

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Tue 11/18

10:38 am-2:54 pm

1 stop28h 16m

$163

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Sat 11/15

11:40 am-9:19 pm

1 stop9h 39m

$197

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Fri 11/21

11:32 am-2:20 pm

1 stop26h 48m

$197

IslipToronto

ISP - YYZ

ISPYYZ

Islip Long Island

Mon 11/17

4:58 pm-11:55 pm

3 stops54h 57m

$201

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Best time to book a flight from Islip to Niagara Falls

Have a flexible travel schedule? Discover the best time to fly to Niagara Falls 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 Niagara Falls

What is the cheapest month to book a flight from Islip, New York to Niagara Falls?

Currently, May is the cheapest month in which you can book a flight from Islip, New York to Niagara Falls (average of $84). Flying from Islip, New York to Niagara Falls in December is currently the most expensive (average of $129). 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.

Related info for your journey

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

    If you book a flight to Niagara Falls from Islip, you will be flying from Long Island, which is the city’s only airport. Islip Long Island (ISP) is located 7.2 mi from the center of Islip. There are 0 flights from Long Island to Niagara Falls per day from 0 different airlines.

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

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

  • How can I find direct flights from Islip to Niagara Falls?

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

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

    Yes. Cheapflights offers flight deals from Islip to Niagara Falls by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Islip, New York to Niagara Falls?

    Currently, May is the cheapest month in which you can book a flight from Islip, New York to Niagara Falls (average of $84). Flying from Islip, New York to Niagara Falls in December is currently the most expensive (average of $129). 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.

See more FAQs

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Alternative routes for Islip to Niagara Falls

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