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Islip

$75+ 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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Pennsylvania to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Pennsylvania (USPA) to Islip (ISP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$120
(Frontier)

One-way from

$75
(Cheapflightsfares)
From Pennsylvania to Islip Long Island
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One-way flight from Pennsylvania to Islip Long Island
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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 January 21, 2025.

This Frontier deal was found by Cheapflights users on 1/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2710:25 pmIAD - ISP
1 stop10h 27mFrontier
Sun 3/22:53 pmISP - IAD
1 stop6h 32mFrontier
Deal found 1/20$120
This Frontier deal was found by Cheapflights users on 1/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/288:36 pmPIT - ISP
1 stop11h 11mFrontier
Sun 3/98:51 pmISP - PIT
1 stop11h 55mFrontier
Deal found 1/20$191
This Trip.com deal was found by Cheapflights users on 1/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/110:18 pmPHL - ISP
1 stop11h 35mFrontier
Sun 2/28:12 pmISP - PHL
1 stop11h 47mFrontier
Deal found 1/20$292
This Southwest deal was found by Cheapflights users on 1/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/277:30 amDCA - ISP
1 stop5h 55mSouthwest
Sun 3/26:15 amISP - DCA
1 stop10h 25mSouthwest
Deal found 1/20$306
This JetBlue deal was found by Cheapflights users on 1/20. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:00 pmDCA - ISP
1 stop3h 40mJetBlue
Sun 10/266:00 amISP - DCA
1 stop6h 43mJetBlue
Deal found 1/20$395
This JetBlue deal was found by Cheapflights users on 1/20. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/185:35 pmLGA - ISP
1 stop3h 40mJetBlue
Sun 6/226:00 amISP - LGA
1 stop4h 25mJetBlue
Deal found 1/20$398
This Trip.com deal was found by Cheapflights users on 1/19. 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 1/2410:59 amLGA - ISP
1 stop9h 22mFrontier
Sun 1/268:12 pmISP - LGA
1 stop19h 48mFrontier
Deal found 1/19$400
This Mytrip deal was found by Cheapflights users on 1/19. 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 1/2411:59 amLGA - ISP
3 stops30h 46mMultiple Airlines
Sun 1/2610:50 amISP - LGA
3 stops20h 45mMultiple Airlines
Deal found 1/19$452
This Mytrip deal was found by Cheapflights users on 1/19. 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 1/2310:03 amEWR - ISP
3 stops27h 13mMultiple Airlines
Sat 1/257:25 pmISP - EWR
3 stops36h 39mMultiple Airlines
Deal found 1/19$528
This Southwest deal was found by Cheapflights users on 1/19. 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 1/2312:00 pmPIT - ISP
1 stop3h 15mSouthwest
Sat 1/253:20 pmISP - PIT
1 stop6h 15mSouthwest
Deal found 1/19$667
This Trip.com deal was found by Cheapflights users on 1/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/151:02 pmJFK - ISP
1 stop18h 50mFrontier
Mon 2/179:04 pmISP - JFK
1 stop14h 58mFrontier
Deal found 1/20$668
This JetBlue deal was found by Cheapflights users on 1/20. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/186:30 amJFK - ISP
1 stop6h 11mJetBlue
Sun 6/221:36 pmISP - JFK
1 stop10h 23mJetBlue
Deal found 1/20$687

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 January 21, 2025.

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Route

Depart

Return

Price

Washington, D.C.Islip

IAD - ISP

IADISP

Washington, D.C. Dulles Intl

Thu 2/27

10:25 pm-8:52 am

1 stop10h 27m

Islip Long Island

Sun 3/2

2:53 pm-9:25 pm

1 stop6h 32m

$120

PittsburghIslip

PIT - ISP

PITISP

Pittsburgh

Fri 2/28

8:36 pm-7:47 am

1 stop11h 11m

Islip Long Island

Sun 3/9

8:51 pm-8:46 am

1 stop11h 55m

$191

PhiladelphiaIslip

PHL - ISP

PHLISP

Philadelphia

Sat 2/1

10:18 pm-9:53 am

1 stop11h 35m

Islip Long Island

Sun 2/2

8:12 pm-7:59 am

1 stop11h 47m

$292

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Thu 2/27

7:30 am-1:25 pm

1 stop5h 55m

Islip Long Island

Sun 3/2

6:15 am-4:40 pm

1 stop10h 25m

$306

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Wed 6/18

5:35 pm-9:15 pm

1 stop3h 40m

Islip Long Island

Sun 6/22

6:00 am-10:25 am

1 stop4h 25m

$398

New YorkIslip

LGA - ISP

LGAISP

New York LaGuardia

Sat 2/15

10:59 pm-12:11 pm

1 stop13h 12m

Islip Long Island

Mon 2/17

9:04 pm-10:00 am

1 stop12h 56m

$419

Washington, D.C.Islip

DCA - ISP

DCAISP

Washington, D.C. Reagan-National

Thu 5/22

4:15 pm-9:08 pm

1 stop4h 53m

Islip Long Island

Mon 5/26

6:00 am-9:40 am

1 stop3h 40m

$572

New YorkIslip

JFK - ISP

JFKISP

New York John F Kennedy Intl

Sat 2/15

1:02 pm-7:52 am

1 stop18h 50m

Islip Long Island

Mon 2/17

9:04 pm-12:02 pm

1 stop14h 58m

$668

New YorkIslip

JFK - ISP

JFKISP

New York John F Kennedy Intl

Wed 6/18

6:30 am-12:41 pm

1 stop6h 11m

Islip Long Island

Sun 6/22

1:36 pm-11:59 pm

1 stop10h 23m

$687

NewarkIslip

EWR - ISP

EWRISP

Newark

Wed 6/18

6:25 am-12:41 pm

1 stop6h 16m

Islip Long Island

Sun 6/22

1:36 pm-11:48 pm

1 stop10h 12m

$787

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 15 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 February is currently the most expensive (average of $220). 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 January 21, 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 January 21, 2025.
Get a feel of what it's like to fly with Frontier, 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.
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

JetBlue
7.4
Good
3,201 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Frontier
6.1
Okay
3,440 reviews
Southwest
8.1
Very good
4,659 reviews

Entertainment

7.7

Overall

8.1

Boarding

8.2

Food

7.2

Comfort

8.1

Crew

8.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 ($75), Southwest ($164), and JetBlue ($311).

  • 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. Reagan-National - Islip Long Island. You may also consider Pittsburgh - Islip Long Island or Washington, D.C. Dulles Intl - 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 February is currently the most expensive (average of $220). 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$277Average$356FlexibilityNo cancel feeOn-time63%
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