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Islip

$94+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
Aug 14 — Aug 211
Fri 8/14
Fri 8/21
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 July 15, 2026.

This Southwest deal was found by Cheapflights users on 7/14. 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.
Thu 9/35:35 am
PIT
-
ISP
1 stop4h 05m
Southwest
Thu 9/106:10 am
ISP
-
PIT
1 stop6h 00m
Southwest
Deal found 7/14$195
This Southwest deal was found by Cheapflights users on 7/12. 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.
Fri 9/118:40 am
PIT
-
ISP
2 stops7h 45m
Southwest
Tue 9/1512:55 pm
ISP
-
PIT
2 stops7h 50m
Southwest
Deal found 7/12$205
This Southwest deal was found by Cheapflights users on 7/14. 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.
Fri 9/254:10 pm
PIT
-
ISP
1 stop5h 55m
Southwest
Tue 9/293:20 pm
ISP
-
PIT
1 stop5h 30m
Southwest
Deal found 7/14$219
This Southwest deal was found by Cheapflights users on 7/11. 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.
Fri 9/114:10 pm
PIT
-
ISP
1 stop5h 55m
Southwest
Sun 9/1310:30 am
ISP
-
PIT
1 stop12h 40m
Southwest
Deal found 7/11$224
This Southwest deal was found by Cheapflights users on 7/12. 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.
Sun 8/166:00 am
PIT
-
ISP
1 stop6h 05m
Southwest
Fri 8/216:10 am
ISP
-
PIT
1 stop6h 00m
Southwest
Deal found 7/12$243
This Southwest deal was found by Cheapflights users on 7/12. 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.
Thu 8/205:35 am
PIT
-
ISP
1 stop4h 05m
Southwest
Sat 8/222:00 pm
ISP
-
PIT
1 stop7h 35m
Southwest
Deal found 7/12$246
This Trip.com deal was found by Cheapflights users on 7/11. 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 8/2511:05 am
IAD
-
ISP
1 stop22h 48m
Frontier
Thu 8/277:46 pm
ISP
-
IAD
1 stop15h 57m
Frontier
Deal found 7/11$247
This Expedia deal was found by Cheapflights users on 7/15. 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.
Fri 8/284:52 pm
IAD
-
ISP
1 stop17h 01m
Frontier
Mon 8/317:09 pm
ISP
-
IAD
1 stop14h 58m
Frontier
Deal found 7/15$248
This Southwest deal was found by Cheapflights users on 7/10. 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.
Thu 11/1212:30 pm
PIT
-
ISP
1 stop4h 35m
Southwest
Sun 11/155:35 am
ISP
-
PIT
1 stop6h 15m
Southwest
Deal found 7/10$253
This Trip.com deal was found by Cheapflights users on 7/13. 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.
Fri 8/2810:45 am
IAD
-
ISP
1 stop7h 29m
Frontier
Sun 8/307:46 pm
ISP
-
IAD
1 stop15h 57m
Frontier
Deal found 7/13$260
This Trip.com deal was found by Cheapflights users on 7/11. 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.
Fri 8/2112:28 pm
IAD
-
ISP
1 stop6h 33m
Frontier
Mon 8/247:09 pm
ISP
-
IAD
1 stop14h 58m
Frontier
Deal found 7/11$261
This Trip.com deal was found by Cheapflights users on 7/15. 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.
Sun 8/2312:28 pm
IAD
-
ISP
1 stop6h 33m
Frontier
Thu 8/2710:57 am
ISP
-
IAD
1 stop22h 53m
Frontier
Deal found 7/15$265

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 July 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$195
(Southwest)

One-way from

$94
(Kiwi.com)

Popular in

February

Cheapest in

August

Average price

$749
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
High demand for flights, 4% potential price rise
Search Deals
Cheapest flight prices on average. 12% potential price decrease ($46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 July 15, 2026.
Use the filters below to find and compare flights from Pennsylvania to Islip that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Thu 9/3

5:35 am-9:40 am

1 stop4h 05m

Islip Long Island

Thu 9/10

6:10 am-12:10 pm

1 stop6h 00m

$195

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Fri 9/11

4:10 pm-10:05 pm

1 stop5h 55m

Islip Long Island

Sun 9/13

10:30 am-11:10 pm

1 stop12h 40m

$224

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Sun 8/16

6:00 am-12:05 pm

1 stop6h 05m

Islip Long Island

Fri 8/21

6:10 am-12:10 pm

1 stop6h 00m

$243

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Thu 9/24

9:21 am-6:51 pm

1 stop9h 30m

Islip Long Island

Sun 9/27

7:46 pm-8:26 am

1 stop12h 40m

$248

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Thu 11/12

12:30 pm-5:05 pm

1 stop4h 35m

Islip Long Island

Sun 11/15

5:35 am-11:50 am

1 stop6h 15m

$253

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Thu 9/17

9:21 am-6:51 pm

1 stop9h 30m

Islip Long Island

Sun 9/20

7:46 pm-8:26 am

1 stop12h 40m

$298

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 10/1

5:57 pm-9:33 am

1 stop15h 36m

Islip Long Island

Sun 10/4

10:57 am-11:11 pm

2 stops12h 14m

$306

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 10/1

5:57 pm-9:33 am

1 stop15h 36m

Islip Long Island

Sun 10/4

4:13 pm-9:32 am

1 stop17h 19m

$311

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Sat 8/29

12:28 pm-7:01 pm

1 stop6h 33m

Islip Long Island

Tue 9/1

5:27 pm-5:14 pm

2 stops23h 47m

$344

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Fri 10/23

5:35 pm-11:10 pm

1 stop5h 35m

Islip Long Island

Mon 10/26

6:55 am-3:55 pm

1 stop9h 00m

$352

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/13

Showing 1-10 of 60 resultsSorted by cheapest first
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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

No data available for this route at this time. Please check back soon.

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?

    Southwest, Frontier, and JetBlue can get you from Pennsylvania to Islip, New York in just under 4h 05m. Your travel time can differ by up to 18h 43m. 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. Dulles Intl - Islip Long Island. You may also consider Washington, D.C. Reagan-National - 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.

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 July 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$196Average$339FlexibilityNo cancel feeOn-time63%

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