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Islip

$52+ 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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
dic. 6 — dic. 131
sáb. 12/6
sáb. 12/13
1 adult, Economy
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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 noviembre 6, 2025.

This Frontier deal was found by Cheapflights users on 11/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/242:11 pmIAD - ISP
1 stop9h 48mFrontier
sáb. 12/610:19 amISP - IAD
1 stop10h 05mFrontier
Deal found 11/3$190
This Frontier deal was found by Cheapflights users on 11/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/258:44 amIAD - ISP
1 stop11h 30mFrontier
sáb. 12/610:19 amISP - IAD
1 stop10h 05mFrontier
Deal found 11/3$210
This Kiwi.com deal was found by Cheapflights users on 11/6. 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. 11/218:42 pmPHL - ISP
1 stop11h 20mMultiple Airlines
mar. 11/256:00 amISP - PHL
2 stops17h 25mMultiple Airlines
Deal found 11/6$212
This Priceline deal was found by Cheapflights users on 11/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/69:52 pmIAD - ISP
1 stop11h 02mFrontier
jue. 11/139:54 amISP - IAD
1 stop11h 03mFrontier
Deal found 11/5$240
This Kiwi.com deal was found by Cheapflights users on 11/6. 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. 11/218:42 pmPHL - ISP
1 stop11h 20mFrontier
mar. 11/259:09 pmISP - PHL
1 stop10h 23mFrontier
Deal found 11/6$245
This Trip.com deal was found by Cheapflights users on 11/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/42:37 pmABE - ISP
1 stop28h 57mMultiple Airlines
jue. 12/1110:19 amISP - ABE
1 stop10h 17mMultiple Airlines
Deal found 11/6$268
This Kiwi.com deal was found by Cheapflights users on 11/6. 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. 11/216:46 pmIAD - ISP
2 stops13h 16mFrontier
mar. 11/259:09 pmISP - IAD
1 stop10h 36mFrontier
Deal found 11/6$274
This Kiwi.com deal was found by Cheapflights users on 11/6. 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. 11/2111:04 amPIT - ISP
1 stop20h 58mMultiple Airlines
mar. 11/259:09 pmISP - PIT
1 stop11h 10mMultiple Airlines
Deal found 11/6$281
This Southwest deal was found by Cheapflights users on 11/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/196:15 pmPIT - ISP
1 stop5h 40mSouthwest
dom. 12/215:40 amISP - PIT
1 stop7h 05mSouthwest
Deal found 11/5$289
This Frontier deal was found by Cheapflights users on 11/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/215:26 pmIAD - ISP
1 stop6h 33mFrontier
sáb. 12/610:19 amISP - IAD
1 stop10h 05mFrontier
Deal found 11/3$320
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
jue. 11/205:40 pmIAD - ISP
2 stops16h 57mMultiple Airlines
lun. 11/246:00 amISP - IAD
1 stop7h 16mMultiple Airlines
Deal found 11/5$325
This Expedia deal was found by Cheapflights users on 11/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/2010:45 amDCA - ISP
1 stop7h 16mJetBlue
lun. 11/247:59 pmISP - DCA
1 stop13h 15mJetBlue
Deal found 11/5$328

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 noviembre 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$212
(Kiwi.com)

One-way from

$52
(Trip.com)

Popular in

November

Cheapest in

August

Average price

$495
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. 24% potential increase in price ($113 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 noviembre 6, 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

lun. 11/24

2:11 pm-11:59 pm

1 stop9h 48m

Islip Long Island

sáb. 12/6

10:19 am-8:24 pm

1 stop10h 05m

$190

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

vie. 11/21

8:42 pm-8:02 am

1 stop11h 20m

Islip Long Island

mar. 11/25

6:00 am-11:25 pm

2 stops17h 25m

$212

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

jue. 11/20

11:12 am-10:37 am

1 stop23h 25m

Islip Long Island

lun. 11/24

6:00 am-1:16 pm

1 stop7h 16m

$213

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

vie. 11/21

8:42 pm-8:02 am

1 stop11h 20m

Islip Long Island

mar. 11/25

9:09 pm-7:32 am

1 stop10h 23m

$245

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

vie. 11/21

6:46 pm-8:02 am

2 stops13h 16m

Islip Long Island

mar. 11/25

9:09 pm-7:45 am

1 stop10h 36m

$274

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

vie. 11/21

11:04 am-8:02 am

1 stop20h 58m

Islip Long Island

mar. 11/25

9:09 pm-8:19 am

1 stop11h 10m

$281

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

vie. 12/19

6:15 pm-11:55 pm

1 stop5h 40m

Islip Long Island

dom. 12/21

5:40 am-12:45 pm

1 stop7h 05m

$289

AllentownIslip

ABE - ISP

ABEISP

Allentown-Bethlehem

jue. 12/4

7:30 am-7:34 pm

2 stops36h 04m

Islip Long Island

jue. 12/11

10:19 am-8:36 pm

1 stop10h 17m

$310

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

sáb. 11/22

1:33 pm-11:53 pm

1 stop10h 20m

Islip Long Island

sáb. 12/6

10:19 am-8:24 pm

1 stop10h 05m

$320

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

lun. 11/24

8:40 am-10:18 am

1 stop25h 38m

Islip Long Island

vie. 11/28

6:00 am-4:31 pm

1 stop10h 31m

$332

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 60 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 October is currently the most expensive (average of $79). 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 noviembre 6, 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, Southwest, and JetBlue can get you from Pennsylvania to Islip, New York in just under 5h 40m. Your travel time can differ by up to 4h 08m. 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 cheapest airlines to fly from Pennsylvania to Islip, New York one-way?

    The cheapest airlines for a one-way flight from Pennsylvania to Islip, New York are Frontier ($73), JetBlue ($120), and Southwest ($161).

  • 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. Dulles Intl - Islip Long Island. You may also consider Washington, D.C. Reagan-National - 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 October is currently the most expensive (average of $79). 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
Southampton

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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 noviembre 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$219Average$310FlexibilityNo cancel feeOn-time63%

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