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$97+ Cheap flights from Islip, NY (ISP) to Pennsylvania

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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PHL
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheap flight deals from Islip to Pennsylvania

Keep the following information in mind while searching for Islip to Pennsylvania flight deals. Data was last updated April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$171
(Southwest)

One-way from

$97
(CheapOair)

Popular in

February

Cheapest in

September

Average price

$390
Provider with most accurate pricing for New York (NYC)-Philadelphia flight deals.
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From Islip Long Island to Pennsylvania
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One-way flight from Islip Long Island to Pennsylvania
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Highest demand for flights based on searches. 16% potential increase in price ($56 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 April 2025
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Find flight deals from Islip to Pennsylvania

Cheapest flights from Islip to Pennsylvania
Explore the most affordable flight options available from Islip to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This Southwest deal was found by Cheapflights users on 4/28. 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 6/95:45 pmISP - PIT
1 stop5h 55mSouthwest
Thu 6/125:40 amPIT - ISP
1 stop3h 45mSouthwest
Deal found 4/28$171
This CheapOair deal was found by Cheapflights users on 4/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/86:48 pmISP - PIT
1 stop22h 36mFrontier
Mon 5/126:14 pmPIT - ISP
1 stop16h 27mFrontier
Deal found 4/28$191
This Southwest deal was found by Cheapflights users on 4/27. 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 7/185:05 amISP - DCA
1 stop6h 20mSouthwest
Sun 7/2011:35 amDCA - ISP
1 stop5h 45mSouthwest
Deal found 4/27$327
This JetBlue deal was found by Cheapflights users on 4/28. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/131:41 pmISP - DCA
1 stop7h 08mJetBlue
Sat 5/177:00 amDCA - ISP
1 stop9h 50mJetBlue
Deal found 4/28$343
This JetBlue deal was found by Cheapflights users on 4/28. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/131:41 pmISP - JFK
1 stop6h 24mJetBlue
Sat 5/176:30 amJFK - ISP
1 stop10h 20mJetBlue
Deal found 4/28$399
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/282:25 pmISP - PHL
2 stops32h 18mMultiple Airlines
Wed 6/47:00 amPHL - ISP
2 stops25h 42mMultiple Airlines
Deal found 4/28$399
This Gotogate deal was found by Cheapflights users on 4/27. 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.
Thu 6/267:39 pmISP - PIT
2 stops13h 07mMultiple Airlines
Sun 6/299:50 amPIT - ISP
1 stop9h 46mMultiple Airlines
Deal found 4/27$471
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/142:25 pmISP - LGA
2 stops32h 59mMultiple Airlines
Sun 5/185:54 amLGA - ISP
2 stops28h 10mMultiple Airlines
Deal found 4/28$519
This Gotogate deal was found by Cheapflights users on 4/27. 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.
Thu 6/267:39 pmISP - PIT
2 stops13h 07mBreeze Airways
Sun 6/298:50 pmPIT - ISP
2 stops13h 14mBreeze Airways
Deal found 4/27$566
This JetBlue deal was found by Cheapflights users on 4/28. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/262:39 pmISP - LGA
1 stop8h 35mJetBlue
Fri 8/296:30 amLGA - ISP
1 stop6h 11mJetBlue
Deal found 4/28$569
This JetBlue deal was found by Cheapflights users on 4/28. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/286:00 amISP - PHL
1 stop3h 38mJetBlue
Wed 6/45:30 pmPHL - ISP
1 stop3h 58mJetBlue
Deal found 4/28$1,501
This JetBlue deal was found by Cheapflights users on 4/27. 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.
Sat 8/236:00 amISP - PIT
1 stop5h 53mJetBlue
Mon 8/254:35 pmPIT - ISP
1 stop4h 40mJetBlue
Deal found 4/27$1,524

Cheapflights Fare Finder

Customize your flight search to find flights from Islip to Pennsylvania 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 April 29, 2025.
Use the filters below to find and compare flights from Islip to Pennsylvania that are best for you.

Fly from

Islip

Fly to

Pennsylvania

Route

Depart

Return

Price

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Mon 6/9

5:45 pm-11:40 pm

1 stop5h 55m

Pittsburgh

Thu 6/12

5:40 am-9:25 am

1 stop3h 45m

$171

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Thu 5/8

6:48 pm-5:24 pm

1 stop22h 36m

Pittsburgh

Mon 5/12

6:14 pm-10:41 am

1 stop16h 27m

$191

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Fri 7/18

5:05 am-11:25 am

1 stop6h 20m

Washington, D.C. Reagan-National

Sun 7/20

11:35 am-5:20 pm

1 stop5h 45m

$327

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Tue 5/13

1:41 pm-8:49 pm

1 stop7h 08m

Washington, D.C. Reagan-National

Sat 5/17

7:00 am-4:50 pm

1 stop9h 50m

$343

IslipPhiladelphia

ISP - PHL

ISPPHL

Islip Long Island

Wed 5/28

2:25 pm-10:43 pm

2 stops32h 18m

Philadelphia

Wed 6/4

7:00 am-8:42 am

2 stops25h 42m

$399

IslipNew York

ISP - JFK

ISPJFK

Islip Long Island

Tue 5/13

1:41 pm-8:05 pm

1 stop6h 24m

New York John F Kennedy Intl

Sat 5/17

6:30 am-4:50 pm

1 stop10h 20m

$399

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Thu 6/26

7:39 pm-8:46 am

2 stops13h 07m

Pittsburgh

Sun 6/29

9:50 am-7:36 pm

1 stop9h 46m

$471

IslipNew York

ISP - LGA

ISPLGA

Islip Long Island

Wed 5/14

2:25 pm-11:24 pm

2 stops32h 59m

New York LaGuardia

Sun 5/18

5:54 am-10:04 am

2 stops28h 10m

$519

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Thu 6/26

7:39 pm-8:46 am

2 stops13h 07m

Pittsburgh

Sun 6/29

8:50 pm-10:04 am

2 stops13h 14m

$566

IslipNew York

ISP - LGA

ISPLGA

Islip Long Island

Thu 6/26

2:39 pm-11:14 pm

1 stop8h 35m

New York LaGuardia

Fri 8/29

6:30 am-12:41 pm

1 stop6h 11m

$569

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 18 results
1
2

Best time to book a flight from Islip to Pennsylvania

Have a flexible travel schedule? Discover the best time to fly to Pennsylvania from Islip 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 Islip to Pennsylvania

What is the cheapest month to book a flight from Islip, New York to Pennsylvania?

Currently, August is the cheapest month in which you can book a flight from Islip, New York to Pennsylvania (average of $236). Flying from Islip, New York to Pennsylvania in March is currently the most expensive (average of $295). 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 ISP to PA?

Find hourly flight availability from Islip to Pennsylvania. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

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

Rainfall in Pennsylvania by month

Plan your trip to Pennsylvania by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Pennsylvania ranges from 2.7 - 4.4 inches per month. July is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Pennsylvania when rainfall is around 2.7 in.

Temperature in Pennsylvania by month

Plan your trip to Pennsylvania by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Pennsylvania, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Pennsylvania

Get insights into the airlines that provide service to Pennsylvania. 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 Pennsylvania. Reviews last updated April 29, 2025.
See what other customers who have flown with Breeze Airways, Southwest and JetBlue from Islip to Pennsylvania have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
160 reviews

Food

6.7

Boarding

8.3

Overall

8.1

Comfort

8.2

Crew

8.8

Entertainment

6.6

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
160 reviews
Breeze Airways
8.1
Very good
160 reviews

Food

6.7

Boarding

8.3

Overall

8.1

Comfort

8.2

Crew

8.8

Entertainment

6.6

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
4,295 reviews
Breeze Airways
8.1
Very good
160 reviews

Food

6.7

Boarding

8.3

Overall

8.1

Comfort

8.2

Crew

8.8

Entertainment

6.6

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
2,922 reviews
Breeze Airways
8.1
Very good
160 reviews

Food

6.7

Boarding

8.3

Overall

8.1

Comfort

8.2

Crew

8.8

Entertainment

6.6

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
6.0
Okay
3,287 reviews
Breeze Airways
8.1
Very good
160 reviews

Food

6.7

Boarding

8.3

Overall

8.1

Comfort

8.2

Crew

8.8

Entertainment

6.6

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 Islip to Pennsylvania. 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 from for flights from Islip to Pennsylvania?

    Located just 7.2 mi from the city center, Islip Long Island (ISP) is the airport most travelers will use when flying to Pennsylvania from Islip.

  • What are the cheapest airlines to fly from Islip, New York to Pennsylvania one-way?

    One-way options have recently been found by users for as low as $97 on Frontier. Other airlines that offer cheap prices include Southwest from $120 and JetBlue from $147 one-way.

  • What are the most popular routes from Islip, New York to Pennsylvania?

    When deciding which route to take from Islip, New York to Pennsylvania consider Islip Long Island - Washington, D.C. Reagan-National, Islip Long Island - New York John F Kennedy Intl or Islip Long Island - Pittsburgh as they are the most popular.

  • Can I find deals for flights from Islip to Pennsylvania that include hotel bookings?

    Yes. In addition to deals on Islip to Pennsylvania flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to Pennsylvania?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Pennsylvania.

  • Can I find deals for business class flights from Islip to Pennsylvania?

    Yes. Cheapflights offers flight deals from Islip to Pennsylvania 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 Islip, New York to Pennsylvania?

    Currently, August is the cheapest month in which you can book a flight from Islip, New York to Pennsylvania (average of $236). Flying from Islip, New York to Pennsylvania in March is currently the most expensive (average of $295). 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

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Alternative routes for Islip to Pennsylvania

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Islip to Pennsylvania

Discover the top airline that operate flights from Islip to Pennsylvania. 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$284Average$336FlexibilityNo cancel feeOn-time63%

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