HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Pennsylvania

$78+ 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 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PHL
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Islip to Pennsylvania with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$264
(Mytrip)

One-way from

$78
(Mytrip)

Popular in

October

Cheapest in

September

Average price

$335
Provider with most accurate pricing for New York (NYC)-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-Philadelphia flights.
Search Deals
From Islip Long Island to Pennsylvania
Search Deals
One-way flight from Islip Long Island to Pennsylvania
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

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 February 22, 2025.

This Trip.com deal was found by Cheapflights users on 2/21. 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 2/289:05 pmISP - LGA
1 stop12h 55mFrontier
Sun 3/210:59 pmLGA - ISP
1 stop21h 05mFrontier
Deal found 2/21$207
This Mytrip deal was found by Cheapflights users on 2/21. 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.
Sat 3/82:35 pmISP - LGA
3 stops20h 26mMultiple Airlines
Wed 3/1211:56 amLGA - ISP
2 stops22h 15mMultiple Airlines
Deal found 2/21$264
This Mytrip deal was found by Cheapflights users on 2/20. 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 3/78:25 pmISP - PHL
2 stops21h 09mMultiple Airlines
Sun 3/99:14 pmPHL - ISP
2 stops22h 31mMultiple Airlines
Deal found 2/20$283
This Trip.com deal was found by Cheapflights users on 2/21. 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 2/289:05 pmISP - JFK
1 stop14h 57mFrontier
Sun 3/21:02 pmJFK - ISP
1 stop19h 05mFrontier
Deal found 2/21$292
This Mytrip deal was found by Cheapflights users on 2/21. 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.
Sat 3/86:20 pmISP - PIT
1 stop22h 05mMultiple Airlines
Wed 3/126:30 amPIT - ISP
3 stops27h 41mMultiple Airlines
Deal found 2/21$344
This JetBlue deal was found by Cheapflights users on 2/21. 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.
Fri 6/66:00 amISP - DCA
1 stop3h 40mJetBlue
Fri 6/203:00 pmDCA - ISP
1 stop6h 15mJetBlue
Deal found 2/21$356
This Trip.com deal was found by Cheapflights users on 2/21. 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.
Mon 2/249:04 pmISP - PHL
1 stop15h 28mFrontier
Fri 2/284:23 pmPHL - ISP
1 stop15h 24mFrontier
Deal found 2/21$381
This Southwest deal was found by Cheapflights users on 2/21. 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 3/207:50 amISP - DCA
1 stop8h 55mSouthwest
Sun 3/237:35 amDCA - ISP
1 stop9h 50mSouthwest
Deal found 2/21$401
This JetBlue deal was found by Cheapflights users on 2/21. 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 3/81:24 pmISP - LGA
1 stop9h 56mJetBlue
Wed 3/129:32 amLGA - ISP
1 stop10h 08mJetBlue
Deal found 2/21$448
This JetBlue deal was found by Cheapflights users on 2/21. 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 3/81:24 pmISP - JFK
1 stop8h 35mJetBlue
Wed 3/1210:59 amJFK - ISP
1 stop8h 41mJetBlue
Deal found 2/21$448
This Frontier deal was found by Cheapflights users on 2/21. 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.
Fri 2/289:07 amISP - PIT
1 stop10h 29mFrontier
Mon 3/312:25 pmPIT - ISP
1 stop7h 39mFrontier
Deal found 2/21$455
This JetBlue deal was found by Cheapflights users on 2/21. 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.
Fri 6/66:00 amISP - PIT
1 stop4h 49mJetBlue
Fri 6/204:35 pmPIT - ISP
1 stop4h 40mJetBlue
Deal found 2/21$572

Find flights from Islip to Pennsylvania within your budget

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 February 22, 2025.

Fly from

Islip

Fly to

Pennsylvania

Route

Depart

Return

Price

IslipNew York

ISP - LGA

ISPLGA

Islip Long Island

Sat 3/8

2:35 pm-11:01 am

3 stops20h 26m

New York LaGuardia

Wed 3/12

11:56 am-10:11 am

2 stops22h 15m

$264

IslipPhiladelphia

ISP - PHL

ISPPHL

Islip Long Island

Fri 3/7

8:25 pm-5:34 pm

2 stops21h 09m

Philadelphia

Sun 3/9

9:14 pm-7:45 pm

2 stops22h 31m

$283

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Sat 3/8

6:20 pm-4:25 pm

1 stop22h 05m

Pittsburgh

Wed 3/12

6:30 am-10:11 am

3 stops27h 41m

$344

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Fri 6/6

6:00 am-9:40 am

1 stop3h 40m

Washington, D.C. Reagan-National

Fri 6/20

3:00 pm-9:15 pm

1 stop6h 15m

$356

IslipWashington, D.C.

ISP - DCA

ISPDCA

Islip Long Island

Thu 3/20

7:50 am-4:45 pm

1 stop8h 55m

Washington, D.C. Reagan-National

Sun 3/23

7:35 am-5:25 pm

1 stop9h 50m

$401

IslipNew York

ISP - LGA

ISPLGA

Islip Long Island

Sat 3/8

1:24 pm-11:20 pm

1 stop9h 56m

New York LaGuardia

Wed 3/12

9:32 am-7:40 pm

1 stop10h 08m

$448

IslipNew York

ISP - JFK

ISPJFK

Islip Long Island

Sat 3/8

1:24 pm-9:59 pm

1 stop8h 35m

New York John F Kennedy Intl

Wed 3/12

10:59 am-7:40 pm

1 stop8h 41m

$448

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Fri 6/6

6:00 am-10:49 am

1 stop4h 49m

Pittsburgh

Fri 6/20

4:35 pm-9:15 pm

1 stop4h 40m

$572

IslipPittsburgh

ISP - PIT

ISPPIT

Islip Long Island

Sat 5/17

7:19 pm-12:09 pm

2 stops16h 50m

Pittsburgh

Mon 5/19

3:00 pm-1:12 pm

1 stop22h 12m

$840

IslipPhiladelphia

ISP - PHL

ISPPHL

Islip Long Island

Mon 3/24

8:25 pm-10:56 pm

2 stops26h 31m

$78

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 15 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.

Travel insights for flights from Islip to Pennsylvania

Get recent, data-driven insights about flights from Islip to Pennsylvania including ideal travel times, pricing trends, and more.

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 February 22, 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 February 22, 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
4,396 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Food

7.1

Crew

8.7

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,396 reviews
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Food

7.1

Crew

8.7

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Breeze Airways
8.1
Very good
150 reviews
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Food

7.1

Crew

8.7

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

JetBlue
7.4
Good
3,068 reviews
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Food

7.1

Crew

8.7

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Frontier
6.0
Okay
3,352 reviews
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Overall

8.1

Entertainment

7.6

Food

7.1

Crew

8.7

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 $91 on Frontier. Other airlines that offer cheap prices include JetBlue from $167 and Southwest from $224 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 - Pittsburgh or Islip Long Island - New York John F Kennedy Intl 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Islip to Pennsylvania

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Miami flights
Newark to Fort Lauderdale flights
Newark to Miami flights
LaGuardia to Miami flights
LaGuardia to Fort Lauderdale flights
Newark to Orlando flights
John F Kennedy Intl to Orlando flights
John F Kennedy Intl to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
John F Kennedy Intl to Fort Lauderdale flights
Newark to Los Angeles flights
John F Kennedy Intl to West Palm Beach flights
Newark to Las Vegas flights
LaGuardia to Dallas/Fort Worth flights
John F Kennedy Intl to Dallas/Fort Worth flights
Newark to Tampa flights
John F Kennedy Intl to O'Hare Intl flights
Newark to Dallas/Fort Worth flights
John F Kennedy Intl to Atlanta flights
John F Kennedy Intl to San Francisco flights
John F Kennedy Intl to Sky Harbor Intl flights
John F Kennedy Intl to Austin flights
LaGuardia to Tampa flights
John F Kennedy Intl to Tampa flights
Newark to Seattle flights
LaGuardia to Orlando flights
John F Kennedy Intl to Seattle flights
Newark to Sky Harbor Intl flights
LaGuardia to Las Vegas flights
Newark to Austin flights
Newark to New Orleans flights
Newark to San Francisco flights
John F Kennedy Intl to Denver flights
Newark to West Palm Beach flights
LaGuardia to O'Hare Intl flights
John F Kennedy Intl to Hobby flights
John F Kennedy Intl to New Orleans flights
LaGuardia to New Orleans flights
LaGuardia to Los Angeles flights
Newark to O'Hare Intl flights
LaGuardia to Hobby flights
LaGuardia to Nashville flights
Newark to Denver flights
John F Kennedy Intl to Salt Lake City flights
LaGuardia to West Palm Beach flights
Newark to Salt Lake City flights
Newark to Fort Myers flights
Newark to Hobby flights
John F Kennedy Intl to George Bush Intcntl flights
LaGuardia to Denver flights

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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$286Average$336FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.