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Pennsylvania

$121+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PHL
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
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 March 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$221
(JetBlue)

One-way from

$121
(JetBlue)

Popular in

February

Cheapest in

September

Average price

$263
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. 19% potential increase in price ($69 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 26, 2025.

This JetBlue deal was found by Cheapflights users on 3/24. 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.
Mon 5/126:00 amISP - JFK
1 stop6h 57mJetBlue
Fri 5/165:15 pmJFK - ISP
1 stop4h 13mJetBlue
Deal found 3/24$221
This JetBlue deal was found by Cheapflights users on 3/25. 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 4/810:39 amISP - DCA
1 stop6h 51mJetBlue
Tue 5/64:15 pmDCA - ISP
1 stop5h 13mJetBlue
Deal found 3/25$249
This Southwest deal was found by Cheapflights users on 3/24. 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.
Tue 4/226:10 amISP - PIT
1 stop6h 05mSouthwest
Wed 4/236:00 amPIT - ISP
1 stop3h 10mSouthwest
Deal found 3/24$255
This Trip.com deal was found by Cheapflights users on 3/23. 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 3/289:04 pmISP - LGA
1 stop24h 56mFrontier
Fri 4/411:30 amLGA - ISP
1 stop8h 39mFrontier
Deal found 3/23$332
This Southwest deal was found by Cheapflights users on 3/25. 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 5/125:00 amISP - DCA
1 stop6h 10mSouthwest
Thu 5/151:15 pmDCA - ISP
1 stop9h 15mSouthwest
Deal found 3/25$372
This Trip.com deal was found by Cheapflights users on 3/23. 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 3/289:04 pmISP - JFK
1 stop14h 58mFrontier
Fri 4/46:00 amJFK - ISP
1 stop14h 09mFrontier
Deal found 3/23$390
This Trip.com deal was found by Cheapflights users on 3/24. 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 4/159:04 pmISP - PHL
1 stop10h 28mFrontier
Wed 4/165:45 pmPHL - ISP
2 stops14h 25mFrontier
Deal found 3/24$428
This Mytrip deal was found by Cheapflights users on 3/23. 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.
Mon 4/218:25 pmISP - LGA
1 stop23h 50mMultiple Airlines
Mon 4/288:43 amLGA - ISP
1 stop11h 02mMultiple Airlines
Deal found 3/23$503
This Mytrip deal was found by Cheapflights users on 3/24. 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.
Fri 5/210:44 amISP - PIT
2 stops30h 07mMultiple Airlines
Sun 5/47:00 amPIT - ISP
3 stops27h 04mMultiple Airlines
Deal found 3/24$597
This JetBlue deal was found by Cheapflights users on 3/24. 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 5/86:00 amISP - PIT
1 stop7h 05mJetBlue
Sat 5/105:02 pmPIT - ISP
1 stop4h 26mJetBlue
Deal found 3/24$639
This JetBlue deal was found by Cheapflights users on 3/24. 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 6/56:00 amISP - PHL
1 stop3h 38mJetBlue
Sun 6/85:30 pmPHL - ISP
1 stop3h 38mJetBlue
Deal found 3/24$692
This KAYAK deal was found by Cheapflights users on 3/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/318:25 pmISP - PIT
1 stop15h 20mBreeze Airways
Thu 4/36:05 pmPIT - ISP
1 stop23h 54mBreeze Airways
Deal found 3/25$718

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 March 26, 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

IslipNew York

ISP - JFK

ISPJFK

Islip Long Island

Mon 5/12

6:00 am-12:57 pm

1 stop6h 57m

New York John F Kennedy Intl

Fri 5/16

5:15 pm-9:28 pm

1 stop4h 13m

$221

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Tue 4/8

10:39 am-5:30 pm

1 stop6h 51m

Washington, D.C. Reagan-National

Tue 5/6

4:15 pm-9:28 pm

1 stop5h 13m

$249

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Tue 4/22

6:10 am-12:15 pm

1 stop6h 05m

Pittsburgh

Wed 4/23

6:00 am-9:10 am

1 stop3h 10m

$255

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Mon 5/12

5:00 am-11:10 am

1 stop6h 10m

Washington, D.C. Reagan-National

Thu 5/15

1:15 pm-10:30 pm

1 stop9h 15m

$372

IslipPhiladelphia

ISP - PHL

ISPPHL

Islip Long Island

Tue 4/15

9:04 pm-7:32 am

1 stop10h 28m

Philadelphia

Wed 4/16

5:45 pm-8:10 am

2 stops14h 25m

$428

IslipNew York

ISP - LGA

ISPLGA

Islip Long Island

Mon 4/21

8:25 pm-8:15 pm

1 stop23h 50m

New York LaGuardia

Mon 4/28

8:43 am-7:45 pm

1 stop11h 02m

$503

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Fri 5/2

10:44 am-4:51 pm

2 stops30h 07m

Pittsburgh

Sun 5/4

7:00 am-10:04 am

3 stops27h 04m

$597

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Thu 5/8

6:00 am-1:05 pm

1 stop7h 05m

Pittsburgh

Sat 5/10

5:02 pm-9:28 pm

1 stop4h 26m

$639

IslipPhiladelphia

ISP - PHL

ISPPHL

Islip Long Island

Thu 6/5

6:00 am-9:38 am

1 stop3h 38m

Philadelphia

Sun 6/8

5:30 pm-9:08 pm

1 stop3h 38m

$692

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Thu 4/17

10:50 am-8:38 am

2 stops21h 48m

Pittsburgh

Thu 4/24

6:05 pm-5:59 pm

1 stop23h 54m

$1,032

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 21 results
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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 March 26, 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 March 26, 2025.
See what other customers who have flown with Southwest, Breeze Airways 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.
Southwest
8.1
Very good
4,273 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Crew

8.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Crew

8.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Breeze Airways
8.0
Very good
156 reviews
Southwest
8.1
Very good
4,273 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Crew

8.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
JetBlue
7.3
Good
2,922 reviews
Southwest
8.1
Very good
4,273 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Crew

8.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Frontier
6.0
Okay
3,272 reviews
Southwest
8.1
Very good
4,273 reviews

Comfort

8.1

Food

7.1

Overall

8.1

Entertainment

7.6

Crew

8.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 $121 on JetBlue. Other airlines that offer cheap prices include Frontier from $134 and Southwest from $254 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 - New York John F Kennedy Intl, Islip Long Island - Washington, D.C. Reagan-National 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.

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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 March 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$284Average$326FlexibilityNo cancel feeOn-time63%
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