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Islip

$53+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
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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 June 30, 2025.

Round-trip from

$144
(Priceline)

One-way from

$53
(Priceline)

Popular in

November

Cheapest in

August

Average price

$288
From Pennsylvania to Islip Long Island
Search Deals
One-way flight from Pennsylvania to Islip Long Island
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Highest demand for flights based on searches. 16% potential increase in price ($66 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 30, 2025.

This Priceline deal was found by Cheapflights users on 6/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/141:36 pmIAD - ISP
1 stop6h 16mFrontier
Thu 7/176:00 amISP - IAD
1 stop6h 51mFrontier
Deal found 6/29$144
This Southwest deal was found by Cheapflights users on 6/28. 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.
Mon 8/46:20 pmPIT - ISP
1 stop5h 45mSouthwest
Sat 8/912:55 pmISP - PIT
1 stop7h 30mSouthwest
Deal found 6/28$254
This Trip.com deal was found by Cheapflights users on 6/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/219:33 pmIAD - ISP
1 stop11h 40mMultiple Airlines
Mon 8/257:27 pmISP - IAD
1 stop22h 45mMultiple Airlines
Deal found 6/29$260
This Frontier deal was found by Cheapflights users on 6/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/229:45 amPHL - ISP
1 stop12h 13mFrontier
Tue 7/298:00 amISP - PHL
1 stop8h 25mFrontier
Deal found 6/28$261
This Southwest deal was found by Cheapflights users on 6/30. 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 7/301:20 pmDCA - ISP
1 stop8h 25mSouthwest
Wed 8/65:30 amISP - DCA
1 stop5h 40mSouthwest
Deal found 6/30$262
This Travelocity deal was found by Cheapflights users on 6/30. 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.
Sat 9/2711:15 amEWR - ISP
2 stops21h 49mFrontier
Mon 9/295:12 pmISP - EWR
2 stops16h 53mFrontier
Deal found 6/30$317
This Expedia deal was found by Cheapflights users on 6/30. 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 7/189:40 pmJFK - ISP
1 stop13h 11mJetBlue
Mon 7/2112:55 pmISP - JFK
1 stop8h 59mJetBlue
Deal found 6/30$338
This Expedia deal was found by Cheapflights users on 6/30. 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 7/1810:00 pmEWR - ISP
1 stop12h 51mJetBlue
Mon 7/2112:55 pmISP - EWR
1 stop7h 05mJetBlue
Deal found 6/30$358
This FlightHub deal was found by Cheapflights users on 6/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/186:59 amJFK - ISP
1 stop12h 43mFrontier
Mon 7/218:38 pmISP - JFK
1 stop13h 45mFrontier
Deal found 6/30$406
This Trip.com deal was found by Cheapflights users on 6/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/196:15 amABE - ISP
1 stop13h 27mMultiple Airlines
Sun 7/206:00 amISP - ABE
1 stop14h 26mMultiple Airlines
Deal found 6/28$427
This JetBlue deal was found by Cheapflights users on 6/29. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/96:30 amLGA - ISP
1 stop6h 26mJetBlue
Tue 7/2911:20 amISP - LGA
1 stop7h 28mJetBlue
Deal found 6/29$466
This Trip.com deal was found by Cheapflights users on 6/30. 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 7/184:30 pmLGA - ISP
1 stop6h 29mMultiple Airlines
Mon 7/218:00 amISP - LGA
1 stop14h 02mMultiple Airlines
Deal found 6/30$467

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 June 30, 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 7/14

1:36 pm-7:52 pm

1 stop6h 16m

Islip Long Island

Thu 7/17

6:00 am-12:51 pm

1 stop6h 51m

$144

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Mon 8/4

6:20 pm-12:05 am

1 stop5h 45m

Islip Long Island

Sat 8/9

12:55 pm-8:25 pm

1 stop7h 30m

$254

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Thu 8/21

9:33 pm-9:13 am

1 stop11h 40m

Islip Long Island

Mon 8/25

7:27 pm-6:12 pm

1 stop22h 45m

$260

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 7/22

9:45 am-9:58 pm

1 stop12h 13m

Islip Long Island

Tue 7/29

8:00 am-4:25 pm

1 stop8h 25m

$261

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Wed 7/30

1:20 pm-9:45 pm

1 stop8h 25m

Islip Long Island

Wed 8/6

5:30 am-11:10 am

1 stop5h 40m

$262

NewarkIslip

EWR - ISP

EWRISP

Newark

Sat 9/27

11:15 am-9:04 am

2 stops21h 49m

Islip Long Island

Mon 9/29

5:12 pm-10:05 am

2 stops16h 53m

$317

New YorkIslip

JFK - ISP

JFKISP

New York John F Kennedy Intl

Fri 7/18

9:40 pm-10:51 am

1 stop13h 11m

Islip Long Island

Mon 7/21

12:55 pm-9:54 pm

1 stop8h 59m

$338

NewarkIslip

EWR - ISP

EWRISP

Newark

Fri 7/18

10:00 pm-10:51 am

1 stop12h 51m

Islip Long Island

Mon 7/21

12:55 pm-8:00 pm

1 stop7h 05m

$358

New YorkIslip

JFK - ISP

JFKISP

New York John F Kennedy Intl

Fri 7/18

6:59 am-7:42 pm

1 stop12h 43m

Islip Long Island

Mon 7/21

8:38 pm-10:23 am

1 stop13h 45m

$406

AllentownIslip

ABE - ISP

ABEISP

Allentown-Bethlehem

Sat 7/19

6:15 am-7:42 pm

1 stop13h 27m

Islip Long Island

Sun 7/20

6:00 am-8:26 pm

1 stop14h 26m

$427

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 34 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, January is the cheapest month in which you can book a flight from Pennsylvania to Islip, New York (average of $108). Flying from Pennsylvania to Islip, New York in November is currently the most expensive (average of $213). 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 June 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Pennsylvania to Islip, New York as you normally would.

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Islip. Reviews last updated June 30, 2025.
Peruse reviews from past customers who have flown with Breeze Airways, Southwest, and JetBlue from Pennsylvania to Islip to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
182 reviews

Comfort

8.2

Boarding

8.4

Food

6.8

Crew

8.8

Entertainment

6.6

Overall

8.1

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Breeze Airways
8.1
Very good
182 reviews
Breeze Airways
8.1
Very good
182 reviews

Comfort

8.2

Boarding

8.4

Food

6.8

Crew

8.8

Entertainment

6.6

Overall

8.1

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Southwest
8.0
Very good
4,278 reviews
Breeze Airways
8.1
Very good
182 reviews

Comfort

8.2

Boarding

8.4

Food

6.8

Crew

8.8

Entertainment

6.6

Overall

8.1

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
JetBlue
7.3
Good
2,920 reviews
Breeze Airways
8.1
Very good
182 reviews

Comfort

8.2

Boarding

8.4

Food

6.8

Crew

8.8

Entertainment

6.6

Overall

8.1

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Frontier
5.9
Fair
3,290 reviews
Breeze Airways
8.1
Very good
182 reviews

Comfort

8.2

Boarding

8.4

Food

6.8

Crew

8.8

Entertainment

6.6

Overall

8.1

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!

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.

  • 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 ($53), Southwest ($89), and Breeze Airways ($302).

  • 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 Pittsburgh - Islip Long Island or Washington, D.C. Reagan-National - 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, January is the cheapest month in which you can book a flight from Pennsylvania to Islip, New York (average of $108). Flying from Pennsylvania to Islip, New York in November is currently the most expensive (average of $213). 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 Pennsylvania?

Book flights to Pennsylvania if you plan to visit one of these locations
Southampton
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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$254Average$333FlexibilityNo cancel feeOn-time63%

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