$129+ Cheap flights from Pennsylvania to Islip, NY (ISP)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
Nov 15 — Nov 221
Round-trip
1 adult, Economy
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Find cheap flights from Pennsylvania to Islip with Cheapflights
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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
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Cheapest flights from Pennsylvania to IslipExplore 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 October 16, 2026.
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 October 16, 2026.
This Southwest deal was found by Cheapflights users on 10/12. 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 11/1212:30 pm -
1 stop4h 35m
Sun 11/154:45 pm -
1 stop7h 45m
Deal found 10/12![Southwest logo]()
$236
This Southwest deal was found by Cheapflights users on 10/13. 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 12/47:15 am -
2 stops9h 00m
Sun 12/612:25 pm -
2 stops8h 50m
Deal found 10/13![Southwest logo]()
$246
This Southwest deal was found by Cheapflights users on 10/16. 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 11/249:20 pm -
1 stop11h 25m
Tue 12/14:05 pm -
1 stop5h 35m
Deal found 10/16![Southwest logo]()
$329
This Southwest deal was found by Cheapflights users on 10/13. 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.
Wed 10/289:55 am -
1 stop5h 50m
Sun 11/15:35 am -
1 stop6h 15m
Deal found 10/13![Southwest logo]()
$371
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:25 pm -
1 stop18h 57m
Mon 11/23:02 pm -
1 stop22h 27m
Deal found 10/14![Multiple Airlines logo]()
$380
This CheapOair deal was found by Cheapflights users on 10/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:51 pm -
1 stop22h 09m
Sun 10/256:25 pm -
1 stop24h 31m
Deal found 10/14![Frontier logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 10/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/265:22 pm -
2 stops17h 58m
Fri 10/306:54 pm -
1 stop14h 36m
Deal found 10/11![Multiple Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:35 am -
2 stops9h 58m
Fri 11/203:02 pm -
1 stop7h 55m
Deal found 10/14![Multiple Airlines logo]()
$438
This Mytrip deal was found by Cheapflights users on 10/14. 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 11/75:15 am -
1 stop12h 16m
Sun 11/86:33 pm -
2 stops33h 38m
Deal found 10/14![Frontier logo]()
$451
This Southwest deal was found by Cheapflights users on 10/11. 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 10/263:20 pm -
2 stops8h 20m
Fri 10/306:00 am -
2 stops8h 40m
Deal found 10/11![Southwest logo]()
$499
This Southwest deal was found by Cheapflights users on 10/14. 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 10/293:20 pm -
2 stops8h 20m
Mon 11/21:35 pm -
2 stops9h 30m
Deal found 10/14![Southwest logo]()
$519
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:15 am -
1 stop12h 16m
Sun 11/810:57 am -
1 stop5h 27m
Deal found 10/14![Multiple Airlines logo]()
$537
Best flights from Pennsylvania to IslipDiscover carefully curated flight deals from Pennsylvania to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 16, 2026.
Discover carefully curated flight deals from Pennsylvania to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 16, 2026.
This Southwest deal was found by Cheapflights users on 10/13. 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 12/44:00 pm -
1 stop5h 40m
Sun 12/64:25 pm -
1 stop8h 00m
Deal found 10/13![Southwest logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 10/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/265:22 pm -
2 stops17h 58m
Fri 10/306:54 pm -
1 stop14h 36m
Deal found 10/11![Multiple Airlines logo]()
$411
This Southwest deal was found by Cheapflights users on 10/12. 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 11/1212:30 pm -
1 stop4h 35m
Sun 11/154:45 pm -
1 stop7h 45m
Deal found 10/12![Southwest logo]()
$236
This Mytrip deal was found by Cheapflights users on 10/14. 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 11/76:00 am -
2 stops11h 31m
Sun 11/86:33 pm -
2 stops33h 38m
Deal found 10/14![Frontier logo]()
$493
This Southwest deal was found by Cheapflights users on 10/16. 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 11/249:20 pm -
1 stop11h 25m
Tue 12/14:05 pm -
1 stop5h 35m
Deal found 10/16![Southwest logo]()
$329
This Lucky2Go deal was found by Cheapflights users on 10/12. 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 Lucky2Go is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/55:52 pm -
1 stop17h 23m
Mon 11/93:02 pm -
1 stop5h 12m
Deal found 10/12![Breeze Airways logo]()
$785
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/291:52 pm -
2 stops20h 41m
Mon 11/23:02 pm -
1 stop22h 27m
Deal found 10/14![Multiple Airlines logo]()
$423
This Southwest deal was found by Cheapflights users on 10/13. 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.
Wed 10/289:55 am -
1 stop5h 50m
Sun 11/15:35 am -
1 stop6h 15m
Deal found 10/13![Southwest logo]()
$371
This FlightHub deal was found by Cheapflights users on 10/15. 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.
Sat 11/78:15 am -
1 stop13h 22m
Sun 11/86:00 am -
1 stop17h 43m
Deal found 10/15![JetBlue logo]()
$911
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:35 am -
2 stops9h 58m
Fri 11/203:02 pm -
1 stop7h 55m
Deal found 10/14![Multiple Airlines logo]()
$438
This Southwest deal was found by Cheapflights users on 10/11. 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 10/263:20 pm -
2 stops8h 20m
Fri 10/306:00 am -
2 stops8h 40m
Deal found 10/11![Southwest logo]()
$499
This Southwest deal was found by Cheapflights users on 10/14. 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 10/293:20 pm -
2 stops8h 20m
Mon 11/21:35 pm -
2 stops9h 30m
Deal found 10/14![Southwest logo]()
$519
This KAYAK deal was found by Cheapflights users on 10/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/208:54 pm -
1 stop14h 26m
Sun 11/227:45 pm -
1 stop23h 50m
Deal found 10/15![Breeze Airways logo]()
$793
This KAYAK deal was found by Cheapflights users on 10/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/101:41 pm -
2 stops21h 39m
Wed 11/113:43 pm -
1 stop18h 47m
Deal found 10/14![Breeze Airways logo]()
$803
This Southwest deal was found by Cheapflights users on 10/13. 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 11/205:00 am -
2 stops10h 35m
Sun 11/295:50 pm -
1 stop6h 15m
Deal found 10/13![Southwest logo]()
$655
Last-minute flights from Pennsylvania to IslipDiscover last-minute flight deals from Pennsylvania to Islip. Data last updated October 16, 2026 and is based on user searches.
Discover last-minute flight deals from Pennsylvania to Islip. Data last updated October 16, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/168:48 am -
1 stop11h 11m
Sat 10/1712:00 pm -
1 stop4h 23m
Deal found 10/12![Multiple Airlines logo]()
$592
This CheapOair deal was found by Cheapflights users on 10/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:51 pm -
1 stop22h 09m
Sun 10/256:25 pm -
1 stop24h 31m
Deal found 10/14![Frontier logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 10/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/265:22 pm -
2 stops17h 58m
Fri 10/306:54 pm -
1 stop14h 36m
Deal found 10/11![Multiple Airlines logo]()
$411
This Southwest deal was found by Cheapflights users on 10/11. 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 10/263:20 pm -
2 stops8h 20m
Fri 10/306:00 am -
2 stops8h 40m
Deal found 10/11![Southwest logo]()
$499
This Southwest deal was found by Cheapflights users on 10/13. 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.
Wed 10/289:55 am -
1 stop5h 50m
Sun 11/15:35 am -
1 stop6h 15m
Deal found 10/13![Southwest logo]()
$371
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:25 pm -
1 stop18h 57m
Mon 11/23:02 pm -
1 stop22h 27m
Deal found 10/14![Multiple Airlines logo]()
$380
This Southwest deal was found by Cheapflights users on 10/14. 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 10/293:20 pm -
2 stops8h 20m
Mon 11/21:35 pm -
2 stops9h 30m
Deal found 10/14![Southwest logo]()
$519
This Mytrip deal was found by Cheapflights users on 10/14. 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 11/75:15 am -
1 stop12h 16m
Sun 11/86:33 pm -
2 stops33h 38m
Deal found 10/14![Frontier logo]()
$451
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:15 am -
1 stop12h 16m
Sun 11/810:57 am -
1 stop5h 27m
Deal found 10/14![Multiple Airlines logo]()
$537
This Southwest deal was found by Cheapflights users on 10/12. 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 11/1212:30 pm -
1 stop4h 35m
Sun 11/154:45 pm -
1 stop7h 45m
Deal found 10/12![Southwest logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:35 am -
2 stops9h 58m
Fri 11/203:02 pm -
1 stop7h 55m
Deal found 10/14![Multiple Airlines logo]()
$438
This Southwest deal was found by Cheapflights users on 10/16. 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 11/249:20 pm -
1 stop11h 25m
Tue 12/14:05 pm -
1 stop5h 35m
Deal found 10/16![Southwest logo]()
$329
One-way flights from Pennsylvania to IslipSearch for one-way flight options from Pennsylvania to Islip. Find affordable one-way fares based on user searches. Data last updated October 16, 2026.
Search for one-way flight options from Pennsylvania to Islip. Find affordable one-way fares based on user searches. Data last updated October 16, 2026.
This Southwest deal was found by Cheapflights users on 10/15. 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.
Wed 12/24:00 pm -
1 stop5h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![Southwest logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2710:15 am -
1 stop28h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![Breeze Airways logo]()
$173
This Southwest deal was found by Cheapflights users on 10/12. 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 10/271:35 pm -
2 stops9h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![Southwest logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:27 pm -
3 stops39h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![Multiple Airlines logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 10/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/211:55 am -
3 stops30h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![Multiple Airlines logo]()
$304
This CheapOair deal was found by Cheapflights users on 10/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/146:00 am -
1 stop15h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/12![JetBlue logo]()
$312
This KAYAK deal was found by Cheapflights users on 10/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:10 am -
2 stops27h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/13![Breeze Airways logo]()
$555
Find flight deals from Pennsylvania to Islip
Keep the following information in mind while searching for Pennsylvania to Islip flight deals. Data was last updated October 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $236 (Southwest) |
One-way from | $109 (Southwest) |
Popular in | February |
Cheapest in | March |
Average price | $399 |
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 7,457,451 searches. Data last updated October 16, 2026.
Use the filters below to find and compare flights from Pennsylvania to Islip that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
PittsburghIslip
PIT Pittsburgh - ISP Islip Long Island
PITISP
Pittsburgh
Wed 12/2
4:00 pm-9:45 pm
1 stop5h 45m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$129
PittsburghIslip
PIT Pittsburgh - ISP Islip Long Island
PITISP
Pittsburgh
Tue 10/27
10:15 am-2:45 pm
1 stop28h 30m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$173
PittsburghIslip
PIT Pittsburgh - ISP Islip Long Island
PITISP
Pittsburgh
Tue 10/27
1:35 pm-10:40 pm
2 stops9h 05m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$191
PittsburghIslip
PIT Pittsburgh - ISP Islip Long Island
PITISP
Pittsburgh
Fri 12/4
4:00 pm-9:40 pm
1 stop5h 40m
Islip Long Island
Sun 12/6
4:25 pm-12:25 am
1 stop8h 00m
$236
PittsburghIslip
PIT Pittsburgh - ISP Islip Long Island
PITISP
Pittsburgh
Thu 11/12
12:30 pm-5:05 pm
1 stop4h 35m
Islip Long Island
Sun 11/15
4:45 pm-12:30 am
1 stop7h 45m
$236
PittsburghIslip
PIT Pittsburgh - ISP Islip Long Island
PITISP
Pittsburgh
Sat 11/14
6:00 am-9:37 pm
1 stop15h 37m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$312
PittsburghIslip
PIT Pittsburgh - ISP Islip Long Island
PITISP
Pittsburgh
Tue 11/24
9:20 pm-8:45 am
1 stop11h 25m
Islip Long Island
Tue 12/1
4:05 pm-9:40 pm
1 stop5h 35m
$329
PittsburghIslip
PIT Pittsburgh - ISP Islip Long Island
PITISP
Pittsburgh
Wed 10/28
9:55 am-3:45 pm
1 stop5h 50m
Islip Long Island
Sun 11/1
5:35 am-11:50 am
1 stop6h 15m
$371
PhiladelphiaIslip
PHL Philadelphia - ISP Islip Long Island
PHLISP
Philadelphia
Mon 10/26
5:22 pm-11:20 am
2 stops17h 58m
Islip Long Island
Fri 10/30
6:54 pm-9:30 am
1 stop14h 36m
$411
PhiladelphiaIslip
PHL Philadelphia - ISP Islip Long Island
PHLISP
Philadelphia
Thu 10/29
1:52 pm-10:33 am
2 stops20h 41m
Islip Long Island
Mon 11/2
3:02 pm-1:29 pm
1 stop22h 27m
$423
Showing 1-10 of 20 resultsSorted by cheapest first
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.
PIT-ISP
PHL-ISP
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
USPA-ISP
PIT-ISP
PHL-ISP
No data available for this route at this time. Please check back soon.
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.
Traveling to a place near Islip?
Book flights to Islip if you plan to visit one of these locationsRiverhead
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Alternative routes for Pennsylvania to Islip
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Search flights from Pennsylvania to Islip by cabin class
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Other flights to Islip
Explore flights to Islip departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 16, 2026.
Pennsylvania and Islip flights
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Pennsylvania to Islip flights
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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 7,457,451 searches. Data last updated October 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$196 | Average$413 | FlexibilityNo cancel fee | On-time63% |