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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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
Jun 15 — Jun 221
Sun 6/15
Sun 6/22
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 June 10, 2025.

Round-trip from

$190
(Frontier)

One-way from

$92
(Priceline)

Popular in

November

Cheapest in

August

Average price

$278
From Pennsylvania to Islip Long Island
Search Deals
One-way flight from Pennsylvania to Islip Long Island
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($67 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 June 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 June 10, 2025.

This Frontier deal was found by Cheapflights users on 6/8. 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 9/49:32 pmIAD - ISP
1 stop11h 22mFrontier
Sun 9/79:39 amISP - IAD
1 stop11h 04mFrontier
Deal found 6/8$190
This Southwest deal was found by Cheapflights users on 6/8. 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 7/145:40 amPIT - ISP
1 stop3h 45mSouthwest
Thu 7/175:45 pmISP - PIT
1 stop5h 55mSouthwest
Deal found 6/8$287
This Southwest deal was found by Cheapflights users on 6/9. 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.
Sun 8/106:05 amDCA - ISP
1 stop7h 50mSouthwest
Tue 8/124:00 pmISP - DCA
1 stop6h 00mSouthwest
Deal found 6/9$307
This FlightHub deal was found by Cheapflights users on 6/10. 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.
Mon 7/215:25 amPHL - ISP
1 stop7h 39mFrontier
Tue 7/228:00 amISP - PHL
1 stop15h 59mFrontier
Deal found 6/10$307
This FlightHub deal was found by Cheapflights users on 6/10. 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.
Thu 8/287:12 pmPIT - ISP
1 stop21h 03mFrontier
Sun 8/317:33 pmISP - PIT
1 stop23h 58mFrontier
Deal found 6/10$318
This FlightHub deal was found by Cheapflights users on 6/8. 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 7/86:59 amJFK - ISP
1 stop14h 59mFrontier
Tue 7/154:45 pmISP - JFK
1 stop17h 30mFrontier
Deal found 6/8$371
This Trip.com deal was found by Cheapflights users on 6/8. 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 6/246:15 amPHL - ISP
1 stop13h 21mMultiple Airlines
Sun 6/298:21 pmISP - PHL
1 stop11h 27mMultiple Airlines
Deal found 6/8$372
This Trip.com deal was found by Cheapflights users on 6/10. 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 6/271:29 pmIAD - ISP
1 stop6h 07mMultiple Airlines
Sun 6/297:49 pmISP - IAD
1 stop12h 16mMultiple Airlines
Deal found 6/10$440
This Trip.com deal was found by Cheapflights users on 6/9. 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.
Wed 6/255:45 amPIT - ISP
1 stop13h 51mMultiple Airlines
Sun 6/298:21 pmISP - PIT
1 stop21h 39mMultiple Airlines
Deal found 6/9$449
This JetBlue deal was found by Cheapflights users on 6/9. 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 7/16:54 amJFK - ISP
1 stop6h 49mJetBlue
Fri 7/412:55 pmISP - JFK
1 stop10h 06mJetBlue
Deal found 6/9$489
This JetBlue deal was found by Cheapflights users on 6/8. 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 7/26:00 amEWR - ISP
1 stop6h 26mJetBlue
Wed 7/912:35 pmISP - EWR
1 stop10h 25mJetBlue
Deal found 6/8$491
This Mytrip deal was found by Cheapflights users on 6/9. 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 7/95:45 amEWR - ISP
2 stops37h 14mMultiple Airlines
Wed 7/162:55 pmISP - EWR
2 stops27h 06mMultiple Airlines
Deal found 6/9$549

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 10, 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

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Thu 9/4

9:32 pm-8:54 am

1 stop11h 22m

Islip Long Island

Sun 9/7

9:39 am-8:43 pm

1 stop11h 04m

$190

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Mon 7/14

5:40 am-9:25 am

1 stop3h 45m

Islip Long Island

Thu 7/17

5:45 pm-11:40 pm

1 stop5h 55m

$287

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Sun 8/10

6:05 am-1:55 pm

1 stop7h 50m

Islip Long Island

Tue 8/12

4:00 pm-10:00 pm

1 stop6h 00m

$307

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Mon 7/21

5:25 am-1:04 pm

1 stop7h 39m

Islip Long Island

Tue 7/22

8:00 am-11:59 pm

1 stop15h 59m

$307

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Thu 8/28

7:12 pm-4:15 pm

1 stop21h 03m

Islip Long Island

Sun 8/31

7:33 pm-7:31 pm

1 stop23h 58m

$318

New YorkIslip

JFK - ISP

JFKISP

New York John F Kennedy Intl

Tue 7/8

6:59 am-9:58 pm

1 stop14h 59m

Islip Long Island

Tue 7/15

4:45 pm-10:15 am

1 stop17h 30m

$371

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Tue 6/24

6:15 am-7:36 pm

1 stop13h 21m

Islip Long Island

Sun 6/29

8:21 pm-7:48 am

1 stop11h 27m

$372

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Fri 6/27

1:29 pm-7:36 pm

1 stop6h 07m

Islip Long Island

Sun 6/29

7:49 pm-8:05 am

1 stop12h 16m

$440

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Wed 6/25

5:45 am-7:36 pm

1 stop13h 51m

Islip Long Island

Sun 6/29

8:21 pm-6:00 pm

1 stop21h 39m

$449

New YorkIslip

JFK - ISP

JFKISP

New York John F Kennedy Intl

Tue 7/1

6:54 am-1:43 pm

1 stop6h 49m

Islip Long Island

Fri 7/4

12:55 pm-11:01 pm

1 stop10h 06m

$489

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/8

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 10, 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 10, 2025.
Get a feel of what it's like to fly with Breeze Airways, Alaska Airlines and Southwest 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.
Breeze Airways
8.1
Very good
175 reviews

Overall

8.1

Food

6.7

Entertainment

6.6

Comfort

8.2

Boarding

8.3

Crew

8.8

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
175 reviews
Breeze Airways
8.1
Very good
175 reviews

Overall

8.1

Food

6.7

Entertainment

6.6

Comfort

8.2

Boarding

8.3

Crew

8.8

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!
Alaska Airlines
8.0
Very good
10,000 reviews
Breeze Airways
8.1
Very good
175 reviews

Overall

8.1

Food

6.7

Entertainment

6.6

Comfort

8.2

Boarding

8.3

Crew

8.8

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
4,289 reviews
Breeze Airways
8.1
Very good
175 reviews

Overall

8.1

Food

6.7

Entertainment

6.6

Comfort

8.2

Boarding

8.3

Crew

8.8

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
2,924 reviews
Breeze Airways
8.1
Very good
175 reviews

Overall

8.1

Food

6.7

Entertainment

6.6

Comfort

8.2

Boarding

8.3

Crew

8.8

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
3,292 reviews
Breeze Airways
8.1
Very good
175 reviews

Overall

8.1

Food

6.7

Entertainment

6.6

Comfort

8.2

Boarding

8.3

Crew

8.8

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 ($92), Southwest ($154), and JetBlue ($273).

  • 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?

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.
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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 June 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$254Average$333FlexibilityNo cancel feeOn-time63%

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