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Islip

$92+ 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 3/14. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
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 February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$140
(Booking.com)

One-way from

$92
(Mytrip)

Popular in

December

Cheapest in

August

Average price

$418
Provider with most accurate pricing for Philadelphia-New York (NYC) flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-New York (NYC) flights.
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From Pennsylvania to Islip Long Island
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One-way flight from Pennsylvania to Islip Long Island
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Highest demand for flights based on searches. 23% potential increase in price ($98 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 22, 2025.

This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/316:03 pmIAD - ISP
1 stop15h 57mFrontier
Wed 4/29:00 amISP - IAD
1 stop8h 04mFrontier
Deal found 2/21$140
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.
Sun 3/210:59 pmLGA - ISP
1 stop21h 05mFrontier
Sat 3/89:04 pmISP - LGA
1 stop11h 56mFrontier
Deal found 2/21$213
This Frontier deal was found by Cheapflights users on 2/22. 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 3/1410:06 amPIT - ISP
1 stop9h 58mFrontier
Sun 3/168:51 pmISP - PIT
1 stop11h 55mFrontier
Deal found 2/22$220
This JetBlue Airways 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 Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/214:15 pmDCA - ISP
1 stop4h 53mJetBlue
Thu 5/226:00 amISP - DCA
1 stop4h 37mJetBlue
Deal found 2/21$231
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.
Sun 3/25:00 amEWR - ISP
1 stop27h 07mMultiple Airlines
Sat 3/89:04 pmISP - EWR
1 stop9h 39mMultiple Airlines
Deal found 2/21$249
This Mytrip deal was found by Cheapflights users on 2/22. 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.
Sun 3/911:41 amPIT - ISP
2 stops32h 04mMultiple Airlines
Thu 3/1312:56 pmISP - PIT
2 stops35h 35mMultiple Airlines
Deal found 2/22$253
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 3/219:15 amPHL - ISP
1 stop16h 03mFrontier
Fri 3/286:00 amISP - PHL
1 stop17h 42mFrontier
Deal found 2/21$282
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.
Sun 3/21:02 pmJFK - ISP
1 stop19h 05mFrontier
Sat 3/89:04 pmISP - JFK
1 stop13h 58mFrontier
Deal found 2/21$286
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.
Fri 3/2110:57 amPHL - ISP
3 stops26h 58mMultiple Airlines
Fri 3/288:25 pmISP - PHL
2 stops26h 31mMultiple Airlines
Deal found 2/21$288
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.
Wed 2/267:33 pmPIT - ISP
2 stops14h 38mBreeze Airways
Thu 2/2712:56 pmISP - PIT
2 stops19h 44mBreeze Airways
Deal found 2/21$298
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.
Sun 3/25:45 amLGA - ISP
2 stops38h 00mMultiple Airlines
Sat 3/82:35 pmISP - LGA
3 stops20h 26mMultiple Airlines
Deal found 2/21$308
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.
Fri 6/136:00 pmPIT - ISP
1 stop6h 05mSouthwest
Sun 6/156:00 amISP - PIT
1 stop5h 35mSouthwest
Deal found 2/21$317

Find flights from Pennsylvania to Islip within your budget

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 February 22, 2025.

Fly from

Pennsylvania

Fly to

Islip

Route

Depart

Return

Price

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Mon 3/31

6:03 pm-10:00 am

1 stop15h 57m

Islip Long Island

Wed 4/2

9:00 am-5:04 pm

1 stop8h 04m

$140

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Fri 3/14

10:06 am-8:04 pm

1 stop9h 58m

Islip Long Island

Sun 3/16

8:51 pm-8:46 am

1 stop11h 55m

$220

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Wed 5/21

4:15 pm-9:08 pm

1 stop4h 53m

Islip Long Island

Thu 5/22

6:00 am-10:37 am

1 stop4h 37m

$231

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Sun 3/9

11:41 am-7:45 pm

2 stops32h 04m

Islip Long Island

Thu 3/13

12:56 pm-12:31 am

2 stops35h 35m

$253

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 3/21

9:15 am-1:18 am

1 stop16h 03m

Islip Long Island

Fri 3/28

6:00 am-11:42 pm

1 stop17h 42m

$282

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Fri 3/21

10:57 am-1:55 pm

3 stops26h 58m

Islip Long Island

Fri 3/28

8:25 pm-10:56 pm

2 stops26h 31m

$288

NewarkIslip

EWR - ISP

EWRISP

Newark

Thu 3/6

3:38 pm-7:45 pm

3 stops28h 07m

Islip Long Island

Sun 3/9

12:56 pm-12:59 am

2 stops36h 03m

$297

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Fri 6/13

6:00 pm-12:05 am

1 stop6h 05m

Islip Long Island

Sun 6/15

6:00 am-11:35 am

1 stop5h 35m

$317

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Thu 3/6

10:58 am-7:45 pm

2 stops32h 47m

Islip Long Island

Sun 3/9

12:56 pm-2:30 pm

2 stops25h 34m

$319

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Fri 5/23

1:15 pm-10:30 pm

1 stop9h 15m

Islip Long Island

Mon 5/26

5:00 am-11:10 am

1 stop6h 10m

$402

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 24 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.

Travel insights for flights from Pennsylvania to Islip

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

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 February 22, 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.

Rainfall in Islip by month

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

In terms of precipitation, rainfall in Islip, New York ranges from 3.3 - 4.4 inches per month. March is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Islip, New York when rainfall is around 3.3 in.

Temperature in Islip by month

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

If weather is an important factor for your trip to Islip, New York, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 February 22, 2025.
Get a feel of what it's like to fly with Southwest, Breeze Airways and JetBlue from Pennsylvania to Islip by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,396 reviews

Comfort

8.1

Overall

8.1

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

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

Comfort

8.1

Overall

8.1

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

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

Comfort

8.1

Overall

8.1

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

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

Comfort

8.1

Overall

8.1

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

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

Comfort

8.1

Overall

8.1

Food

7.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

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 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 ($92), Southwest ($133), and JetBlue ($134).

  • 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 Washington, D.C. Reagan-National - Islip Long Island or Pittsburgh - 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?

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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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$277Average$361FlexibilityNo cancel feeOn-time63%
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