Islip

$124+ 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 7/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
Jun 28 — Jul 51
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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 23, 2025.

Round-trip from

$174
(Southwest)

One-way from

$124
(FlightHub)

Popular in

November

Cheapest in

August

Average price

$278
From Pennsylvania to Islip Long Island
One-way flight from Pennsylvania to Islip Long Island
Highest demand for flights based on searches. 16% potential increase in price ($67 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Average for round-trip flights in June 2025

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 23, 2025.

This Southwest deal was found by Cheapflights users on 6/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/234:15 pmPIT - ISP
1 stop5h 50mSouthwest
Sat 9/273:40 pmISP - PIT
1 stop6h 10mSouthwest
Deal found 6/22$174
This FlightHub deal was found by Cheapflights users on 6/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/85:30 pmPHL - ISP
1 stop26h 22mFrontier
Thu 7/106:00 amISP - PHL
1 stop6h 18mFrontier
Deal found 6/21$251
This Frontier deal was found by Cheapflights users on 6/22. 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.
Thu 7/171:36 pmIAD - ISP
1 stop10h 11mFrontier
Sun 7/206:00 amISP - IAD
1 stop13h 01mFrontier
Deal found 6/22$251
This Trip.com deal was found by Cheapflights users on 6/23. 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 7/116:07 pmIAD - ISP
1 stop18h 57mMultiple Airlines
Sun 7/137:49 pmISP - IAD
1 stop12h 16mMultiple Airlines
Deal found 6/23$295
This Southwest deal was found by Cheapflights users on 6/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/98:00 amDCA - ISP
1 stop8h 10mSouthwest
Tue 8/124:00 pmISP - DCA
1 stop6h 00mSouthwest
Deal found 6/22$307
This JetBlue deal was found by Cheapflights users on 6/21. 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 9/128:20 amJFK - ISP
1 stop6h 24mJetBlue
Sun 9/143:39 pmISP - JFK
1 stop7h 19mJetBlue
Deal found 6/21$363
This FlightHub deal was found by Cheapflights users on 6/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/209:56 amPIT - ISP
1 stop13h 51mMultiple Airlines
Sun 7/277:39 pmISP - PIT
2 stops13h 07mMultiple Airlines
Deal found 6/22$471
This FlightHub deal was found by Cheapflights users on 6/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/159:08 pmPIT - ISP
1 stop16h 24mBreeze Airways
Thu 7/177:39 pmISP - PIT
2 stops13h 07mBreeze Airways
Deal found 6/21$498
This Mytrip deal was found by Cheapflights users on 6/23. 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.
Thu 9/42:24 pmPHL - ISP
3 stops23h 21mMultiple Airlines
Sun 9/77:36 pmISP - PHL
3 stops21h 34mMultiple Airlines
Deal found 6/23$555
This JetBlue Airways deal was found by Cheapflights users on 6/22. 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 JetBlue Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/268:25 pmJFK - ISP
1 stop15h 16mMultiple Airlines
Sun 8/312:19 pmISP - JFK
1 stop6h 45mMultiple Airlines
Deal found 6/22$579
This JetBlue Airways deal was found by Cheapflights users on 6/22. 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 JetBlue Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/293:45 pmDCA - ISP
1 stop19h 13mMultiple Airlines
Thu 7/311:51 pmISP - DCA
1 stop27h 05mMultiple Airlines
Deal found 6/22$585
This Mytrip deal was found by Cheapflights users on 6/23. 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.
Fri 8/83:59 pmEWR - ISP
2 stops26h 46mMultiple Airlines
Fri 8/1510:44 amISP - EWR
3 stops22h 42mMultiple Airlines
Deal found 6/23$605

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 23, 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

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Tue 9/23

4:15 pm-10:05 pm

1 stop5h 50m

Islip Long Island

Sat 9/27

3:40 pm-9:50 pm

1 stop6h 10m

$174

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 7/8

5:30 pm-7:52 pm

1 stop26h 22m

Islip Long Island

Thu 7/10

6:00 am-12:18 pm

1 stop6h 18m

$251

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Thu 7/17

1:36 pm-11:47 pm

1 stop10h 11m

Islip Long Island

Sun 7/20

6:00 am-7:01 pm

1 stop13h 01m

$251

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Fri 7/11

6:07 pm-1:04 pm

1 stop18h 57m

Islip Long Island

Sun 7/13

7:49 pm-8:05 am

1 stop12h 16m

$295

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Sat 8/9

8:00 am-4:10 pm

1 stop8h 10m

Islip Long Island

Tue 8/12

4:00 pm-10:00 pm

1 stop6h 00m

$307

New YorkIslip

JFK - ISP

JFKISP

New York John F Kennedy Intl

Fri 9/12

8:20 am-2:44 pm

1 stop6h 24m

Islip Long Island

Sun 9/14

3:39 pm-10:58 pm

1 stop7h 19m

$363

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Sun 7/20

9:56 am-11:47 pm

1 stop13h 51m

Islip Long Island

Sun 7/27

7:39 pm-8:46 am

2 stops13h 07m

$471

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Tue 7/15

9:08 pm-1:32 pm

1 stop16h 24m

Islip Long Island

Thu 7/17

7:39 pm-8:46 am

2 stops13h 07m

$498

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Thu 9/4

2:24 pm-1:45 pm

3 stops23h 21m

Islip Long Island

Sun 9/7

7:36 pm-5:10 pm

3 stops21h 34m

$555

New YorkIslip

JFK - ISP

JFKISP

New York John F Kennedy Intl

Tue 8/26

8:25 pm-11:41 am

1 stop15h 16m

Islip Long Island

Sun 8/31

2:19 pm-9:04 pm

1 stop6h 45m

$579

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/20

Showing 1-10 of 33 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 23, 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 June 23, 2025.
Get a feel of what it's like to fly with Breeze Airways, Southwest 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.

Crew

8.8

Entertainment

6.6

Comfort

8.2

Boarding

8.4

Food

6.8

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!

Crew

8.8

Entertainment

6.6

Comfort

8.2

Boarding

8.4

Food

6.8

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!

Crew

8.8

Entertainment

6.6

Comfort

8.2

Boarding

8.4

Food

6.8

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!

Crew

8.8

Entertainment

6.6

Comfort

8.2

Boarding

8.4

Food

6.8

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!

Crew

8.8

Entertainment

6.6

Comfort

8.2

Boarding

8.4

Food

6.8

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 ($124), Southwest ($169), and Breeze Airways ($355).

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

  • 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.

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 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$254Average$333FlexibilityNo cancel feeOn-time63%

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