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Islip

$81+ 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
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 26, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/25. 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 12/313:21 pmPIT - ISP
2 stops18h 37mMultiple Airlines
Sun 1/48:24 pmISP - PIT
1 stop20h 53mMultiple Airlines
Deal found 12/25$431
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 12/313:21 pmPIT - ISP
2 stops18h 37mBreeze Airways
Fri 1/22:25 pmISP - PIT
1 stop4h 50mBreeze Airways
Deal found 12/25$458
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 12/313:21 pmPIT - ISP
2 stops18h 37mMultiple Airlines
Mon 1/52:04 pmISP - PIT
1 stop8h 55mMultiple Airlines
Deal found 12/25$465
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 12/313:21 pmPIT - ISP
2 stops18h 37mMultiple Airlines
Thu 1/112:20 pmISP - PIT
1 stop10h 39mMultiple Airlines
Deal found 12/25$475
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 12/308:30 amPIT - ISP
1 stop6h 40mMultiple Airlines
Mon 1/58:24 pmISP - PIT
2 stops26h 18mMultiple Airlines
Deal found 12/25$489
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 12/308:30 amPIT - ISP
1 stop6h 40mMultiple Airlines
Sun 1/48:24 pmISP - PIT
1 stop20h 53mMultiple Airlines
Deal found 12/25$500
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 12/293:53 pmPIT - ISP
2 stops19h 32mMultiple Airlines
Sun 1/48:24 pmISP - PIT
1 stop20h 53mMultiple Airlines
Deal found 12/25$510
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 12/316:10 amPIT - ISP
1 stop29h 15mMultiple Airlines
Fri 1/22:25 pmISP - PIT
1 stop4h 50mMultiple Airlines
Deal found 12/25$523
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 12/308:30 amPIT - ISP
1 stop6h 40mMultiple Airlines
Fri 1/22:25 pmISP - PIT
1 stop4h 50mMultiple Airlines
Deal found 12/25$527
This Expedia deal was found by Cheapflights users on 12/24. 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.
Thu 12/2511:20 amDCA - ISP
1 stop4h 50mMultiple Airlines
Fri 12/2612:30 pmISP - DCA
1 stop8h 20mMultiple Airlines
Deal found 12/24$912
This Priceline deal was found by Cheapflights users on 12/26. 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.
Sat 12/279:10 amDCA - ISP
1 stop7h 00mMultiple Airlines
Tue 12/309:59 amISP - DCA
1 stop5h 50mMultiple Airlines
Deal found 12/26$964
This Southwest deal was found by Cheapflights users on 12/26. 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.
Sat 12/277:20 amDCA - ISP
1 stop7h 20mSouthwest
Tue 12/302:45 pmISP - DCA
2 stops8h 05mSouthwest
Deal found 12/26$1,002

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 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$131
(Kiwi.com)

One-way from

$81
(Cheapflightsfares)

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 26, 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

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

8:45 pm-9:58 am

1 stop13h 13m

$131

NewarkIslip

EWR - ISP

EWRISP

Newark

Fri 1/23

11:44 am-8:47 pm

1 stop9h 03m

Islip Long Island

Fri 1/30

2:01 pm-9:00 pm

1 stop6h 59m

$165

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 1/9

3:56 pm-7:08 pm

1 stop27h 12m

Islip Long Island

Tue 1/13

8:00 am-5:43 pm

1 stop9h 43m

$177

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Fri 1/23

6:30 am-8:47 pm

1 stop14h 17m

Islip Long Island

Fri 1/30

9:43 pm-5:58 pm

1 stop20h 15m

$181

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Fri 2/27

6:30 am-12:44 am

1 stop18h 14m

Islip Long Island

Mon 3/2

3:34 pm-5:38 pm

1 stop26h 04m

$181

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

Fri 1/30

9:43 pm-3:27 pm

1 stop17h 44m

$182

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

Fri 1/30

2:01 pm-11:58 am

2 stops21h 57m

$186

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Tue 2/24

6:43 pm-8:40 am

1 stop13h 57m

Islip Long Island

Mon 3/2

3:34 pm-5:38 pm

1 stop26h 04m

$190

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Wed 2/25

6:43 pm-2:39 pm

1 stop19h 56m

Islip Long Island

Mon 3/2

3:34 pm-5:38 pm

1 stop26h 04m

$190

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Tue 2/24

6:43 pm-8:40 am

1 stop13h 57m

Islip Long Island

Sun 3/1

5:51 pm-1:24 pm

1 stop19h 33m

$193

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

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.

What is the cheapest time of day to fly from PA to ISP?

Find hourly flight availability from Pennsylvania to Islip. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 26, 2025.

When flying from Pennsylvania to Islip, New York, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 39% versus a flight in the afternoon.

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 can get you from Pennsylvania to Islip, New York in just under 11h 16m. Your travel time can differ by up to . The distance from Pennsylvania to Islip, New York is about 263 mi.

  • 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 $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 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$219Average$310FlexibilityNo cancel feeOn-time63%

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