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$103+ Cheap flights from Islip (ISP) to New Jersey

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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — EWR
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Islip to New Jersey

Keep the following information in mind while searching for Islip to New Jersey flight deals. Data was last updated September 16, 2025.

Round-trip from

$158
(Frontier)

One-way from

$103
(Trip.com)
From Islip Long Island to New Jersey
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One-way flight from Islip Long Island to New Jersey
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Find flight deals from Islip to New Jersey

Cheapest flights from Islip to New Jersey
Explore the most affordable flight options available from Islip to New Jersey. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/3011:25 amISP - PHL
1 stop9h 46mFrontier
Tue 10/711:34 amPHL - ISP
1 stop9h 08mFrontier
Deal found 9/14$158
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2911:40 amISP - PHL
1 stop6h 05mFrontier
Fri 10/38:00 amPHL - ISP
1 stop8h 27mFrontier
Deal found 9/14$209
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/211:40 amISP - PHL
1 stop13h 12mFrontier
Thu 10/911:16 amPHL - ISP
1 stop9h 26mFrontier
Deal found 9/14$219
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/215:12 pmISP - PHL
1 stop7h 47mFrontier
Sun 9/285:01 amPHL - ISP
1 stop11h 26mFrontier
Deal found 9/14$238
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 9/295:05 pmISP - JFK
1 stop17h 21mFrontier
Thu 10/26:59 amJFK - ISP
1 stop27h 41mFrontier
Deal found 9/15$240
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 9/295:05 pmISP - LGA
1 stop15h 55mMultiple Airlines
Fri 10/36:30 pmLGA - ISP
2 stops16h 25mMultiple Airlines
Deal found 9/14$279
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Tue 9/3011:25 amISP - LGA
1 stop9h 04mMultiple Airlines
Sat 10/410:56 pmLGA - ISP
2 stops35h 44mMultiple Airlines
Deal found 9/15$284
This JetBlue deal was found by Cheapflights users on 9/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/411:35 amISP - LGA
1 stop8h 25mJetBlue
Wed 10/86:30 amLGA - ISP
1 stop8h 50mJetBlue
Deal found 9/15$301
This Kiwi.com deal was found by Cheapflights users on 9/16. 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.
Wed 10/111:35 amISP - LGA
1 stop8h 54mMultiple Airlines
Sun 10/511:30 amLGA - ISP
2 stops26h 15mMultiple Airlines
Deal found 9/16$306
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Tue 9/3011:25 amISP - PHL
1 stop25h 37mMultiple Airlines
Sat 10/43:55 pmPHL - ISP
2 stops19h 05mMultiple Airlines
Deal found 9/15$314
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Sun 9/2111:25 amISP - PHL
1 stop12h 34mMultiple Airlines
Sun 9/287:32 pmPHL - ISP
2 stops39h 08mMultiple Airlines
Deal found 9/14$333
This Trip.com deal was found by Cheapflights users on 9/14. 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.
Mon 9/294:19 pmISP - LGA
1 stop16h 39mJetBlue
Fri 10/36:30 amLGA - ISP
1 stop9h 14mJetBlue
Deal found 9/14$355

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to New Jersey 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 September 16, 2025.
Use the filters below to find and compare flights from Islip to New Jersey that are best for you.

Fly from

Islip

Fly to

New Jersey

Route

Depart

Return

Price

IslipPhiladelphia

ISP - PHL

ISPPHL

Islip Long Island

Tue 9/30

11:25 am-9:11 pm

1 stop9h 46m

Philadelphia

Tue 10/7

11:34 am-8:42 pm

1 stop9h 08m

$158

IslipPhiladelphia

ISP - PHL

ISPPHL

Islip Long Island

Mon 9/29

11:40 am-5:45 pm

1 stop6h 05m

Philadelphia

Fri 10/3

8:00 am-4:27 pm

1 stop8h 27m

$209

IslipPhiladelphia

ISP - PHL

ISPPHL

Islip Long Island

Thu 10/2

11:40 am-12:52 am

1 stop13h 12m

Philadelphia

Thu 10/9

11:16 am-8:42 pm

1 stop9h 26m

$219

IslipNew York

ISP - JFK

ISPJFK

Islip Long Island

Mon 9/29

5:05 pm-10:26 am

1 stop17h 21m

New York John F Kennedy Intl

Thu 10/2

12:30 pm-10:40 am

2 stops22h 10m

$255

IslipNew York

ISP - LGA

ISPLGA

Islip Long Island

Mon 9/29

5:05 pm-9:00 am

1 stop15h 55m

New York LaGuardia

Fri 10/3

6:30 pm-10:55 am

2 stops16h 25m

$279

IslipNew York

ISP - LGA

ISPLGA

Islip Long Island

Tue 9/30

11:25 am-8:29 pm

1 stop9h 04m

New York LaGuardia

Sat 10/4

10:56 pm-10:40 am

2 stops35h 44m

$284

IslipNew York

ISP - LGA

ISPLGA

Islip Long Island

Sat 10/4

11:35 am-8:00 pm

1 stop8h 25m

New York LaGuardia

Wed 10/8

6:30 am-3:20 pm

1 stop8h 50m

$301

IslipNew York

ISP - LGA

ISPLGA

Islip Long Island

Wed 10/1

11:35 am-8:29 pm

1 stop8h 54m

New York LaGuardia

Sun 10/5

11:30 am-1:45 pm

2 stops26h 15m

$306

IslipPhiladelphia

ISP - PHL

ISPPHL

Islip Long Island

Tue 9/30

11:25 am-1:02 pm

1 stop25h 37m

Philadelphia

Sat 10/4

3:55 pm-11:00 am

2 stops19h 05m

$314

IslipNew York

ISP - LGA

ISPLGA

Islip Long Island

Mon 9/29

4:19 pm-8:58 am

1 stop16h 39m

New York LaGuardia

Fri 10/3

6:30 am-3:44 pm

1 stop9h 14m

$355

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 25 results
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Best time to book a flight from Islip to New Jersey

Have a flexible travel schedule? Discover the best time to fly to New Jersey 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 New Jersey
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Islip to New Jersey. 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 New Jersey?

    Islip Long Island (ISP) is the airport you will fly out of if you book a flight from Islip to New Jersey. It is only a 7.2 mi journey to Long Island (ISP) from Islip’s city center.

  • How long is the flight from Islip to New Jersey?

    Airlines like Frontier and JetBlue fly from Islip to New Jersey in about 8h 25m. The time it takes to get you to your destination can typically vary by up to 1h 21m. The distance between Islip and New Jersey is about 41 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Islip to New Jersey?

    The most popular flight routes from Islip to New Jersey are Islip Long Island - Philadelphia, Islip Long Island - New York John F Kennedy Intl and Islip Long Island - New York LaGuardia.

  • Can I find deals for flights from Islip to New Jersey that include hotel bookings?

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

  • How can I find direct flights from Islip to New Jersey?

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

  • Can I find deals for business class flights from Islip to New Jersey?

    Yes. Cheapflights offers flight deals from Islip to New Jersey 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 to New Jersey?

    Currently, January is the cheapest month in which you can book a flight from Islip to New Jersey (average of $228). Flying from Islip to New Jersey in June is currently the most expensive (average of $301). 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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