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Islip

$64+ 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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
feb. 7 — feb. 141
sáb. 2/7
sáb. 2/14
1 adult, Economy
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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 enero 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$167
(Kiwi.com)

One-way from

$64
(Kiwi.com)

Popular in

November

Cheapest in

August

Average price

$335
Provider with most accurate pricing for Philadelphia-New York (NYC) flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-New York (NYC) flights.
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From Pennsylvania to Islip Long Island
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One-way flight from Pennsylvania to Islip Long Island
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Highest demand for flights based on searches. 9% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 enero 8, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/7. 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.
vie. 2/2710:30 pmEWR - ISP
1 stop12h 36mFrontier
vie. 3/61:42 pmISP - EWR
1 stop20h 52mFrontier
Deal found 1/7$167
This Kiwi.com deal was found by Cheapflights users on 1/7. 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.
vie. 2/2710:03 pmLGA - ISP
1 stop13h 03mMultiple Airlines
vie. 3/61:42 pmISP - LGA
1 stop9h 39mMultiple Airlines
Deal found 1/7$203
This Kiwi.com deal was found by Cheapflights users on 1/7. 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.
vie. 2/2710:30 pmEWR - ISP
1 stop12h 36mMultiple Airlines
vie. 3/62:31 pmISP - EWR
2 stops20h 03mMultiple Airlines
Deal found 1/7$204
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.
mar. 1/204:59 pmLGA - ISP
2 stops18h 11mMultiple Airlines
vie. 1/239:43 pmISP - LGA
1 stop13h 22mMultiple Airlines
Deal found 1/6$215
This Kiwi.com deal was found by Cheapflights users on 1/6. 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.
vie. 1/309:35 amIAD - ISP
1 stop11h 12mFrontier
dom. 2/17:53 pmISP - IAD
2 stops20h 35mFrontier
Deal found 1/6$235
This Kiwi.com deal was found by Cheapflights users on 1/7. 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.
vie. 2/612:30 pmLGA - ISP
1 stop8h 17mMultiple Airlines
vie. 2/132:31 pmISP - LGA
1 stop5h 18mMultiple Airlines
Deal found 1/7$240
This Southwest deal was found by Cheapflights users on 1/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 1/293:55 pmPIT - ISP
1 stop6h 00mSouthwest
lun. 2/26:00 amISP - PIT
1 stop6h 10mSouthwest
Deal found 1/7$246
This Kiwi.com deal was found by Cheapflights users on 1/7. 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.
vie. 2/611:44 amEWR - ISP
1 stop9h 03mMultiple Airlines
vie. 2/132:31 pmISP - EWR
1 stop5h 28mMultiple Airlines
Deal found 1/7$256
This Kiwi.com deal was found by Cheapflights users on 1/7. 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.
dom. 1/255:37 pmIAD - ISP
2 stops19h 44mMultiple Airlines
jue. 1/297:43 pmISP - IAD
1 stop12h 57mMultiple Airlines
Deal found 1/7$264
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.
mar. 1/209:35 pmLGA - ISP
1 stop11h 17mJetBlue
vie. 1/2311:10 amISP - LGA
1 stop10h 44mJetBlue
Deal found 1/6$268
This Rumbo deal was found by Cheapflights users on 1/7. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/276:40 amJFK - ISP
1 stop7h 38mJetBlue
vie. 3/68:10 amISP - JFK
1 stop6h 32mJetBlue
Deal found 1/7$271
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.
dom. 2/1512:17 pmEWR - ISP
2 stops19h 21mMultiple Airlines
vie. 2/208:45 pmISP - EWR
1 stop22h 14mMultiple Airlines
Deal found 1/6$272

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 enero 8, 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

NewarkIslip

EWR - ISP

EWRISP

Newark

vie. 2/27

10:30 pm-11:06 am

1 stop12h 36m

Islip Long Island

vie. 3/6

1:42 pm-10:34 am

1 stop20h 52m

$167

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

vie. 2/27

10:03 pm-11:06 am

1 stop13h 03m

Islip Long Island

vie. 3/6

1:42 pm-11:21 pm

1 stop9h 39m

$203

NewarkIslip

EWR - ISP

EWRISP

Newark

vie. 2/27

10:30 pm-11:06 am

1 stop12h 36m

Islip Long Island

vie. 3/6

2:31 pm-10:34 am

2 stops20h 03m

$204

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

mar. 1/20

4:59 pm-11:10 am

2 stops18h 11m

Islip Long Island

vie. 1/23

9:43 pm-11:05 am

1 stop13h 22m

$215

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

vie. 1/30

9:35 am-8:47 pm

1 stop11h 12m

Islip Long Island

dom. 2/1

7:53 pm-4:28 pm

2 stops20h 35m

$235

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

vie. 2/6

12:30 pm-8:47 pm

1 stop8h 17m

Islip Long Island

vie. 2/13

2:31 pm-7:49 pm

1 stop5h 18m

$240

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

jue. 1/29

3:55 pm-9:55 pm

1 stop6h 00m

Islip Long Island

lun. 2/2

6:00 am-12:10 pm

1 stop6h 10m

$246

NewarkIslip

EWR - ISP

EWRISP

Newark

vie. 2/6

11:44 am-8:47 pm

1 stop9h 03m

Islip Long Island

vie. 2/13

2:31 pm-7:59 pm

1 stop5h 28m

$256

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

dom. 1/25

5:37 pm-1:21 pm

2 stops19h 44m

Islip Long Island

jue. 1/29

7:43 pm-8:40 am

1 stop12h 57m

$264

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

mar. 1/20

9:35 pm-8:52 am

1 stop11h 17m

Islip Long Island

vie. 1/23

11:10 am-9:54 pm

1 stop10h 44m

$268

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Showing 1-10 of 59 results
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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?

    Frontier, Southwest, and JetBlue can get you from Pennsylvania to Islip, New York in just under 6h. Your travel time can differ by up to 6h 36m. 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 New York John F Kennedy Intl - 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

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Alternative routes for Pennsylvania to Islip

See prices for flight routes from nearby airports that may be better suited for you.
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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 enero 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$219Average$310FlexibilityNo cancel feeOn-time63%

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