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Islip

$115+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
יולי 4 — יולי 111
ש' 7/4
ש' 7/11
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 יוני 4, 2026.

This Southwest deal was found by Cheapflights users on 6/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ג' 7/2812:45 pm
PIT
-
ISP
1 stop3h 15m
Southwest
ה' 8/66:10 am
ISP
-
PIT
1 stop6h 00m
Southwest
Deal found 6/3$229
This Southwest deal was found by Cheapflights users on 6/1. 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.
ה' 7/233:50 pm
PIT
-
ISP
2 stops7h 50m
Southwest
ג' 7/282:55 pm
ISP
-
PIT
1 stop4h 45m
Southwest
Deal found 6/1$236
This Gotogate deal was found by Cheapflights users on 5/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ג' 7/211:32 pm
IAD
-
ISP
1 stop20h 21m
Frontier
ד' 7/2910:57 am
ISP
-
IAD
1 stop25h 50m
Frontier
Deal found 5/31$239
This Travelocity deal was found by Cheapflights users on 6/3. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ד' 8/2612:32 pm
IAD
-
ISP
1 stop6h 33m
Frontier
ב' 8/3110:48 am
ISP
-
IAD
1 stop26h 05m
Frontier
Deal found 6/3$244
This Southwest deal was found by Cheapflights users on 6/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
א' 7/125:15 am
PIT
-
ISP
1 stop11h 25m
Southwest
ה' 7/165:50 pm
ISP
-
PIT
1 stop5h 45m
Southwest
Deal found 6/3$248
This Booking.com deal was found by Cheapflights users on 6/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ו' 7/37:09 pm
PIT
-
ISP
1 stop14h 54m
Frontier
ו' 7/1010:57 am
ISP
-
PIT
1 stop7h 18m
Frontier
Deal found 6/3$282
This Expedia deal was found by Cheapflights users on 6/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
א' 7/121:32 pm
IAD
-
ISP
1 stop20h 21m
Frontier
ו' 7/1710:57 am
ISP
-
IAD
1 stop7h 36m
Frontier
Deal found 6/3$290
This Southwest deal was found by Cheapflights users on 6/4. 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.
ד' 9/232:00 pm
PIT
-
ISP
2 stops7h 05m
Southwest
א' 9/274:35 pm
ISP
-
PIT
1 stop6h 15m
Southwest
Deal found 6/4$293
This Expedia deal was found by Cheapflights users on 6/1. 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.
ש' 6/271:23 pm
IAD
-
ISP
1 stop7h 34m
Frontier
ב' 6/299:52 pm
ISP
-
IAD
1 stop15h 01m
Frontier
Deal found 6/1$313
This Trip.com deal was found by Cheapflights users on 6/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ד' 6/171:38 pm
IAD
-
ISP
1 stop7h 19m
Frontier
ד' 6/249:52 pm
ISP
-
IAD
1 stop15h 01m
Frontier
Deal found 6/3$314
This Southwest deal was found by Cheapflights users on 5/31. 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.
ה' 7/29:55 pm
PIT
-
ISP
1 stop12h 35m
Southwest
ג' 7/76:00 am
ISP
-
PIT
1 stop6h 05m
Southwest
Deal found 5/31$315
This Expedia deal was found by Cheapflights users on 6/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ד' 6/1012:32 pm
IAD
-
ISP
1 stop6h 33m
Frontier
ד' 6/179:52 pm
ISP
-
IAD
1 stop15h 01m
Frontier
Deal found 6/3$320

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 יוני 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$229
(Southwest)

One-way from

$115
(Frontier)

Popular in

February

Cheapest in

August

Average price

$381
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. 12% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 17% potential price decrease ($53 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 יוני 4, 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

ג' 7/28

12:45 pm-4:00 pm

1 stop3h 15m

Islip Long Island

ה' 8/6

6:10 am-12:10 pm

1 stop6h 00m

$229

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

ה' 7/23

3:50 pm-11:40 pm

2 stops7h 50m

Islip Long Island

ג' 7/28

8:55 am-7:05 pm

2 stops10h 10m

$310

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

ש' 6/27

1:23 pm-8:57 pm

1 stop7h 34m

Islip Long Island

ב' 6/29

9:52 pm-12:53 pm

1 stop15h 01m

$313

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

ד' 6/17

1:38 pm-8:57 pm

1 stop7h 19m

Islip Long Island

א' 6/21

9:52 pm-12:53 pm

1 stop15h 01m

$320

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

ו' 10/9

8:00 pm-3:03 pm

1 stop19h 03m

Islip Long Island

ש' 10/17

4:13 pm-7:09 pm

1 stop26h 56m

$320

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

ו' 7/17

4:45 pm-11:45 pm

1 stop7h 00m

Islip Long Island

א' 7/19

6:00 am-11:30 am

1 stop5h 30m

$320

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

ה' 7/30

4:45 pm-11:45 pm

1 stop7h 00m

Islip Long Island

א' 8/2

5:20 pm-12:25 am

1 stop7h 05m

$320

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

ב' 6/15

7:09 pm-3:56 pm

1 stop20h 47m

Islip Long Island

ו' 6/19

9:52 pm-6:14 pm

1 stop20h 22m

$323

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

ה' 8/6

5:35 am-9:40 am

1 stop4h 05m

Islip Long Island

ש' 8/8

5:30 am-12:10 pm

1 stop6h 40m

$333

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

ה' 7/30

1:32 pm-9:53 am

1 stop20h 21m

Islip Long Island

ו' 7/31

10:57 am-12:26 pm

1 stop25h 29m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/31

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 3h 15m. Your travel time can differ by up to 7h 41m. 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.

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 יוני 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$196Average$339FlexibilityNo cancel feeOn-time63%

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