HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Islip

$73+ Cheap flights from Pennsylvania to Islip, NY (ISP)

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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
Feb 5 — Feb 121
Thu 2/5
Thu 2/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Pennsylvania to Islip with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Pennsylvania to Islip

Keep the following information in mind while searching for Pennsylvania to Islip flight deals. Data was last updated January 6, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$181
(Kiwi.com)

One-way from

$73
(Trip.com)

Popular in

November

Cheapest in

August

Average price

$335
Provider with most accurate pricing for Philadelphia-New York (NYC) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-New York (NYC) flights.
Search Deals
From Pennsylvania to Islip Long Island
Search Deals
One-way flight from Pennsylvania to Islip Long Island
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from Pennsylvania to Islip

Cheapest flights from Pennsylvania to Islip
Explore the most affordable flight options available from Pennsylvania to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 6, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/3. 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 1/165:30 pmLGA - ISP
1 stop17h 40mMultiple Airlines
Mon 1/198:54 pmISP - LGA
1 stop14h 35mMultiple Airlines
Deal found 1/3$181
This Kiwi.com deal was found by Cheapflights users on 1/4. 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 1/165:30 pmLGA - ISP
1 stop17h 40mMultiple Airlines
Tue 1/2012:00 pmISP - LGA
1 stop10h 45mMultiple Airlines
Deal found 1/4$198
This Kiwi.com deal was found by Cheapflights users on 1/6. 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 1/204:59 pmLGA - ISP
2 stops18h 11mMultiple Airlines
Fri 1/239:43 pmISP - LGA
1 stop13h 22mMultiple Airlines
Deal found 1/6$215
This Kiwi.com deal was found by Cheapflights users on 1/5. 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 1/2011:00 amPHL - ISP
1 stop24h 10mMultiple Airlines
Sat 1/2411:50 amISP - PHL
2 stops10h 56mMultiple Airlines
Deal found 1/5$227
This Expedia deal was found by Cheapflights users on 1/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/128:35 amIAD - ISP
1 stop11h 16mFrontier
Fri 1/168:45 pmISP - IAD
1 stop13h 13mFrontier
Deal found 1/3$236
This Kiwi.com deal was found by Cheapflights users on 1/5. 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 1/136:30 amJFK - ISP
1 stop16h 16mMultiple Airlines
Thu 1/1511:55 amISP - JFK
2 stops24h 34mMultiple Airlines
Deal found 1/5$246
This Trip.com deal was found by Cheapflights users on 1/5. 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.
Tue 1/205:50 pmPIT - ISP
1 stop17h 43mMultiple Airlines
Sat 1/2412:25 pmISP - PIT
1 stop11h 19mMultiple Airlines
Deal found 1/5$254
This Kiwi.com deal was found by Cheapflights users on 1/5. 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.
Thu 2/197:50 pmPHL - ISP
1 stop17h 41mMultiple Airlines
Sun 2/228:21 pmISP - PHL
2 stops14h 57mMultiple Airlines
Deal found 1/5$260
This Priceline deal was found by Cheapflights users on 1/6. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/209:35 pmLGA - ISP
1 stop11h 17mJetBlue
Fri 1/2311:10 amISP - LGA
1 stop10h 44mJetBlue
Deal found 1/6$268
This Kiwi.com deal was found by Cheapflights users on 1/6. 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 2/1512:17 pmEWR - ISP
2 stops19h 21mMultiple Airlines
Fri 2/208:45 pmISP - EWR
1 stop22h 14mMultiple Airlines
Deal found 1/6$272
This Kiwi.com deal was found by Cheapflights users on 1/6. 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 2/154:59 pmLGA - ISP
2 stops21h 40mMultiple Airlines
Fri 2/202:31 pmISP - LGA
1 stop5h 18mMultiple Airlines
Deal found 1/6$274
This Kiwi.com deal was found by Cheapflights users on 1/3. 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 1/164:19 pmEWR - ISP
1 stop18h 51mMultiple Airlines
Mon 1/192:01 pmISP - EWR
1 stop6h 59mMultiple Airlines
Deal found 1/3$281

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pennsylvania to Islip 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 January 6, 2026.
Use the filters below to find and compare flights from Pennsylvania to Islip that are best for you.

Fly from

Pennsylvania

Fly to

Islip

Route

Depart

Return

Price

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Fri 1/16

5:30 pm-11:10 am

1 stop17h 40m

Islip Long Island

Mon 1/19

8:54 pm-11:29 am

1 stop14h 35m

$181

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Fri 1/16

5:30 pm-11:10 am

1 stop17h 40m

Islip Long Island

Tue 1/20

12:00 pm-10:45 pm

1 stop10h 45m

$198

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Tue 1/20

4:59 pm-11:10 am

2 stops18h 11m

Islip Long Island

Fri 1/23

9:43 pm-11:05 am

1 stop13h 22m

$215

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 1/20

11:00 am-11:10 am

1 stop24h 10m

Islip Long Island

Sat 1/24

11:50 am-10:46 pm

2 stops10h 56m

$227

New YorkIslip

JFK - ISP

JFKISP

New York John F Kennedy Intl

Tue 1/13

6:30 am-10:46 pm

1 stop16h 16m

Islip Long Island

Thu 1/15

11:55 am-12:29 pm

2 stops24h 34m

$246

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Tue 1/20

5:50 pm-11:33 am

1 stop17h 43m

Islip Long Island

Sat 1/24

12:25 pm-11:44 pm

1 stop11h 19m

$254

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 2/19

7:50 pm-1:31 pm

1 stop17h 41m

Islip Long Island

Sun 2/22

8:21 pm-11:18 am

2 stops14h 57m

$260

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Tue 1/20

9:35 pm-8:52 am

1 stop11h 17m

Islip Long Island

Fri 1/23

11:10 am-9:54 pm

1 stop10h 44m

$268

NewarkIslip

EWR - ISP

EWRISP

Newark

Sun 2/15

12:17 pm-7:38 am

2 stops19h 21m

Islip Long Island

Fri 2/20

8:45 pm-6:59 pm

1 stop22h 14m

$272

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Sun 2/15

4:59 pm-2:39 pm

2 stops21h 40m

Islip Long Island

Fri 2/20

2:31 pm-7:49 pm

1 stop5h 18m

$274

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 55 results
1
2
3
...
6

Best time to book a flight from Pennsylvania to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Pennsylvania 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 Pennsylvania to Islip

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

Currently, April is the cheapest month in which you can book a flight from Pennsylvania to Islip, New York (average of $41). Flying from Pennsylvania to Islip, New York in October is currently the most expensive (average of $65). 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 Pennsylvania to Islip. 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 into for flights to Islip from Pennsylvania?

    If you book a flight to Islip from Pennsylvania, you will be flying to Long Island, which is the city’s only airport. Islip Long Island (ISP) is located 7.2 mi from the center of Islip.

  • How long is the flight from Pennsylvania to Islip, New York?

    JetBlue, Frontier, and Southwest can get you from Pennsylvania to Islip, New York in just under 10h 20m. Your travel time can differ by up to 8h 49m. The distance from Pennsylvania to Islip, New York is about 375 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Pennsylvania to Islip, New York?

    The most popular route from Pennsylvania to Islip, New York is Washington, D.C. Reagan-National - Islip Long Island. You may also consider Washington, D.C. Dulles Intl - Islip Long Island or Pittsburgh - Islip Long Island.

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

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

  • How can I find direct flights from Pennsylvania to Islip?

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

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

    Yes. Cheapflights offers flight deals from Pennsylvania to Islip 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 Pennsylvania to Islip, New York?

    Currently, April is the cheapest month in which you can book a flight from Pennsylvania to Islip, New York (average of $41). Flying from Pennsylvania to Islip, New York in October is currently the most expensive (average of $65). 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

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Pennsylvania to Islip

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
Dallas/Fort Worth to John F Kennedy Intl flights
Dallas/Fort Worth to LaGuardia flights
San Francisco to John F Kennedy Intl flights
Orlando to John F Kennedy Intl flights
O'Hare Intl to John F Kennedy Intl flights
Los Angeles to LaGuardia flights
Los Angeles to Newark flights
Fort Lauderdale to John F Kennedy Intl flights
Atlanta to John F Kennedy Intl flights
Miami to John F Kennedy Intl flights
Atlanta to LaGuardia flights
Miami to LaGuardia flights
Miami to Newark flights
Seattle to John F Kennedy Intl flights
Fort Lauderdale to Newark flights
San Francisco to Newark flights
Dallas/Fort Worth to Newark flights
Fort Lauderdale to LaGuardia flights
Hobby to John F Kennedy Intl flights
O'Hare Intl to LaGuardia flights
Tampa to John F Kennedy Intl flights
Atlanta to Newark flights
Hobby to LaGuardia flights
West Palm Beach to Newark flights
Tampa to LaGuardia flights
Raleigh to John F Kennedy Intl flights
O'Hare Intl to Newark flights
Seattle to Newark flights
San Francisco to LaGuardia flights
Tampa to Newark flights
Orlando to LaGuardia flights
George Bush Intcntl to John F Kennedy Intl flights
Orlando to Newark flights
West Palm Beach to John F Kennedy Intl flights
Sky Harbor Intl to John F Kennedy Intl flights
Minneapolis to John F Kennedy Intl flights
Austin to John F Kennedy Intl flights
Cincinnati to John F Kennedy Intl flights
Minneapolis to LaGuardia flights
Denver to LaGuardia flights
Denver to John F Kennedy Intl flights
Charlotte to John F Kennedy Intl flights
Hobby to Newark flights
Raleigh to LaGuardia flights
Burbank to LaGuardia flights
Minneapolis to Newark flights
Seattle to LaGuardia flights
Denver to Newark flights
Austin to Newark flights

Top airline flying from Pennsylvania to Islip

Discover the top airline that operate flights from Pennsylvania to Islip. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$219Average$310FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.