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Islip

$68+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
Jan 28 — Feb 41
Wed 1/28
Wed 2/4
1 adult, Economy
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Cheap 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 December 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/28. 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.
Tue 12/3010:30 pmEWR - ISP
2 stops36h 55mMultiple Airlines
Mon 1/58:47 pmISP - EWR
1 stop19h 31mMultiple Airlines
Deal found 12/28$452
This Kiwi.com deal was found by Cheapflights users on 12/28. 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.
Tue 12/306:30 pmLGA - ISP
1 stop22h 07mMultiple Airlines
Mon 1/58:24 pmISP - LGA
2 stops35h 07mMultiple Airlines
Deal found 12/28$490
This Kiwi.com deal was found by Cheapflights users on 12/28. 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.
Wed 12/3112:00 pmLGA - ISP
1 stop23h 25mMultiple Airlines
Sun 1/48:24 pmISP - LGA
2 stops23h 06mMultiple Airlines
Deal found 12/28$510
This Kiwi.com deal was found by Cheapflights users on 12/27. 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 12/316:05 amIAD - ISP
2 stops18h 50mFrontier
Fri 1/22:04 pmISP - IAD
1 stop7h 09mFrontier
Deal found 12/27$602
This Kiwi.com deal was found by Cheapflights users on 12/28. 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.
Wed 12/314:43 pmEWR - ISP
2 stops18h 42mMultiple Airlines
Sun 1/48:24 pmISP - EWR
1 stop16h 36mMultiple Airlines
Deal found 12/28$603
This Kiwi.com deal was found by Cheapflights users on 12/28. 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.
Wed 12/317:59 amJFK - ISP
1 stop8h 38mFrontier
Sun 1/48:24 pmISP - JFK
1 stop13h 36mFrontier
Deal found 12/28$618
This Kiwi.com deal was found by Cheapflights users on 12/28. 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.
Wed 12/317:59 amJFK - ISP
1 stop8h 38mMultiple Airlines
Sun 1/42:19 pmISP - JFK
2 stops10h 36mMultiple Airlines
Deal found 12/28$765
This Expedia deal was found by Cheapflights users on 12/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:47 pmJFK - ISP
1 stop13h 14mJetBlue
Mon 1/57:00 amISP - JFK
1 stop7h 24mJetBlue
Deal found 12/28$773
This Southwest deal was found by Cheapflights users on 12/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:55 amDCA - ISP
1 stop5h 35mSouthwest
Wed 12/313:40 pmISP - DCA
1 stop6h 55mSouthwest
Deal found 12/28$864
This Expedia deal was found by Cheapflights users on 12/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:40 pmEWR - ISP
1 stop12h 21mJetBlue
Mon 1/57:40 pmISP - EWR
1 stop13h 20mJetBlue
Deal found 12/28$953
This Expedia deal was found by Cheapflights users on 12/29. 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 12/293:29 pmJFK - ISP
1 stop4h 16mMultiple Airlines
Sat 1/37:25 amISP - JFK
1 stop8h 46mMultiple Airlines
Deal found 12/29$954
This Expedia deal was found by Cheapflights users on 12/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:40 pmEWR - ISP
1 stop12h 21mJetBlue
Sun 1/410:46 amISP - EWR
1 stop8h 00mJetBlue
Deal found 12/28$1,047

Find flight deals from Pennsylvania to Islip

Keep the following information in mind while searching for Pennsylvania to Islip flight deals. Data was last updated December 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$134
(Kiwi.com)

One-way from

$68
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$554
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. 23% potential increase in price ($102 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 29, 2025.
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 1/23

12:30 pm-8:47 pm

1 stop8h 17m

Islip Long Island

Mon 1/26

7:43 pm-11:29 am

1 stop15h 46m

$134

NewarkIslip

EWR - ISP

EWRISP

Newark

Sun 1/25

6:00 pm-6:48 pm

1 stop24h 48m

Islip Long Island

Sun 2/1

9:25 am-10:49 am

1 stop25h 24m

$152

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Fri 1/30

6:30 am-8:47 pm

1 stop14h 17m

Islip Long Island

Sun 2/1

9:25 am-5:58 pm

1 stop8h 33m

$175

New YorkIslip

JFK - ISP

JFKISP

New York John F Kennedy Intl

Fri 1/23

11:23 am-8:47 pm

1 stop9h 24m

Islip Long Island

Mon 1/26

7:43 pm-3:27 pm

1 stop19h 44m

$177

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Sun 1/25

7:59 pm-6:48 pm

1 stop22h 49m

Islip Long Island

Sun 2/1

9:25 am-10:00 am

2 stops24h 35m

$179

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Fri 1/23

4:59 pm-11:10 am

2 stops18h 11m

Islip Long Island

Mon 1/26

7:43 pm-11:29 am

1 stop15h 46m

$184

NewarkIslip

EWR - ISP

EWRISP

Newark

Fri 1/30

2:00 pm-8:05 pm

1 stop6h 05m

Islip Long Island

Sun 2/1

7:26 pm-6:59 pm

2 stops23h 33m

$191

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Sun 1/11

7:59 pm-7:51 pm

1 stop23h 52m

Islip Long Island

Wed 1/14

8:00 am-8:00 pm

1 stop12h 00m

$193

NewarkIslip

EWR - ISP

EWRISP

Newark

Thu 1/29

4:19 pm-1:21 pm

1 stop21h 02m

Islip Long Island

Wed 2/4

11:50 am-5:30 pm

1 stop5h 40m

$195

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Mon 1/12

8:35 am-7:51 pm

1 stop11h 16m

Islip Long Island

Fri 1/16

8:54 pm-8:38 am

1 stop11h 44m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/28

Showing 1-10 of 50 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 $42). Flying from Pennsylvania to Islip, New York in January is currently the most expensive (average of $73). 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, JetBlue, and Southwest can get you from Pennsylvania to Islip, New York in just under 8h 17m. Your travel time can differ by up to 4h 35m. The distance from Pennsylvania to Islip, New York is about 41 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 Pittsburgh - Islip Long Island. You may also consider Washington, D.C. Reagan-National - Islip Long Island or Washington, D.C. Dulles 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 $42). Flying from Pennsylvania to Islip, New York in January is currently the most expensive (average of $73). 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 December 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$219Average$310FlexibilityNo cancel feeOn-time63%

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