$124+ 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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
Nov 9 — Nov 161
Round-trip
1 adult, Economy
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Find cheap flights from Pennsylvania to Islip with Cheapflights
1. Tell us where you want to go
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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Pennsylvania to Islip
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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 10, 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 10, 2026.
This Southwest deal was found by Cheapflights users on 10/8. 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.
Fri 10/306:00 pm -
1 stop5h 40m
Sat 10/316:00 am -
1 stop5h 05m
Deal found 10/8![Southwest logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 10/5. 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 11/49:30 am -
1 stop24h 47m
Wed 11/1112:00 pm -
2 stops21h 30m
Deal found 10/5![Multiple Airlines logo]()
$255
This Southwest deal was found by Cheapflights users on 10/5. 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 11/44:00 pm -
1 stop5h 45m
Wed 11/1112:30 pm -
1 stop5h 25m
Deal found 10/5![Southwest logo]()
$295
This CheapOair deal was found by Cheapflights users on 10/6. 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.
Wed 10/217:51 pm -
1 stop21h 39m
Sun 10/256:25 pm -
1 stop24h 31m
Deal found 10/6![Frontier logo]()
$320
This Southwest deal was found by Cheapflights users on 10/8. 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.
Fri 11/205:00 am -
2 stops10h 35m
Mon 11/234:45 pm -
1 stop7h 45m
Deal found 10/8![Southwest logo]()
$327
This Southwest deal was found by Cheapflights users on 10/5. 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 11/1912:20 pm -
1 stop3h 55m
Thu 11/265:45 am -
2 stops10h 25m
Deal found 10/5![Southwest logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:20 pm -
1 stop16h 00m
Wed 10/2812:00 pm -
2 stops19h 11m
Deal found 10/8![Multiple Airlines logo]()
$342
This CheapOair deal was found by Cheapflights users on 10/8. 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 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 10/8![Frontier logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:20 pm -
1 stop16h 00m
Tue 10/2712:00 pm -
1 stop25h 29m
Deal found 10/8![Multiple Airlines logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 10/6. 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 10/219:30 am -
1 stop24h 47m
Sun 10/256:25 pm -
2 stops22h 21m
Deal found 10/6![Multiple Airlines logo]()
$431
This Southwest deal was found by Cheapflights users on 10/8. 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.
Fri 10/232:35 pm -
2 stops9h 05m
Tue 10/2712:50 pm -
2 stops8h 45m
Deal found 10/8![Southwest logo]()
$503
This Mytrip deal was found by Cheapflights users on 10/6. 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 10/215:22 pm -
2 stops24h 08m
Sun 10/256:25 pm -
2 stops28h 17m
Deal found 10/6![Frontier logo]()
$515
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 10, 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 10, 2026.
This Southwest deal was found by Cheapflights users on 10/8. 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.
Fri 10/306:00 pm -
1 stop5h 40m
Sat 10/316:00 am -
1 stop5h 05m
Deal found 10/8![Southwest logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:20 pm -
1 stop16h 00m
Tue 10/2712:00 pm -
1 stop25h 29m
Deal found 10/8![Multiple Airlines logo]()
$399
This Mytrip deal was found by Cheapflights users on 10/6. 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 10/215:22 pm -
2 stops24h 08m
Sun 10/256:25 pm -
2 stops28h 17m
Deal found 10/6![Frontier logo]()
$515
This Southwest deal was found by Cheapflights users on 10/5. 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 11/1912:20 pm -
1 stop3h 55m
Thu 11/2611:40 am -
1 stop5h 10m
Deal found 10/5![Southwest logo]()
$295
This Southwest deal was found by Cheapflights users on 10/5. 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 11/44:00 pm -
1 stop5h 45m
Wed 11/1112:30 pm -
1 stop5h 25m
Deal found 10/5![Southwest logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 10/6. 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 10/219:30 am -
1 stop24h 47m
Sun 10/256:25 pm -
2 stops22h 21m
Deal found 10/6![Multiple Airlines logo]()
$431
This Southwest deal was found by Cheapflights users on 10/8. 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.
Fri 11/205:00 am -
2 stops10h 35m
Mon 11/231:35 pm -
2 stops10h 55m
Deal found 10/8![Southwest logo]()
$384
This Southwest deal was found by Cheapflights users on 10/6. 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 10/211:50 pm -
2 stops8h 50m
Sun 10/255:45 pm -
1 stop5h 40m
Deal found 10/6![Southwest logo]()
$444
This Southwest deal was found by Cheapflights users on 10/8. 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.
Fri 10/232:35 pm -
2 stops9h 05m
Tue 10/2712:50 pm -
2 stops8h 45m
Deal found 10/8![Southwest logo]()
$503
Last-minute flights from Pennsylvania to IslipDiscover last-minute flight deals from Pennsylvania to Islip. Data last updated October 10, 2026 and is based on user searches.
Discover last-minute flight deals from Pennsylvania to Islip. Data last updated October 10, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:20 pm -
1 stop16h 00m
Wed 10/2812:00 pm -
2 stops19h 11m
Deal found 10/8![Multiple Airlines logo]()
$342
This CheapOair deal was found by Cheapflights users on 10/6. 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.
Wed 10/217:51 pm -
1 stop21h 39m
Sun 10/256:25 pm -
1 stop24h 31m
Deal found 10/6![Frontier logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 10/6. 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 10/219:30 am -
1 stop24h 47m
Sun 10/256:25 pm -
2 stops22h 21m
Deal found 10/6![Multiple Airlines logo]()
$431
This Mytrip deal was found by Cheapflights users on 10/6. 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 10/215:22 pm -
2 stops24h 08m
Sun 10/256:25 pm -
2 stops28h 17m
Deal found 10/6![Frontier logo]()
$515
This CheapOair deal was found by Cheapflights users on 10/8. 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 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 10/8![Frontier logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:20 pm -
1 stop16h 00m
Tue 10/2712:00 pm -
1 stop25h 29m
Deal found 10/8![Multiple Airlines logo]()
$399
This Southwest deal was found by Cheapflights users on 10/8. 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.
Fri 10/232:35 pm -
2 stops9h 05m
Tue 10/2712:50 pm -
2 stops8h 45m
Deal found 10/8![Southwest logo]()
$503
This Southwest deal was found by Cheapflights users on 10/8. 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.
Fri 10/306:00 pm -
1 stop5h 40m
Sat 10/316:00 am -
1 stop5h 05m
Deal found 10/8![Southwest logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 10/5. 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 11/49:30 am -
1 stop24h 47m
Wed 11/1112:00 pm -
2 stops21h 30m
Deal found 10/5![Multiple Airlines logo]()
$255
This Southwest deal was found by Cheapflights users on 10/5. 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 11/44:00 pm -
1 stop5h 45m
Wed 11/1112:30 pm -
1 stop5h 25m
Deal found 10/5![Southwest logo]()
$295
This Southwest deal was found by Cheapflights users on 10/5. 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 11/1912:20 pm -
1 stop3h 55m
Thu 11/265:45 am -
2 stops10h 25m
Deal found 10/5![Southwest logo]()
$331
This Southwest deal was found by Cheapflights users on 10/8. 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.
Fri 11/205:00 am -
2 stops10h 35m
Mon 11/234:45 pm -
1 stop7h 45m
Deal found 10/8![Southwest logo]()
$327
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 10, 2026.
Search for one-way flight options from Pennsylvania to Islip. Find affordable one-way fares based on user searches. Data last updated October 10, 2026.
This Southwest deal was found by Cheapflights users on 10/8. 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.
Sat 10/316:25 am -
2 stops10h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Southwest logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:54 pm -
1 stop14h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Breeze Airways logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/28:54 pm -
1 stop14h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Breeze Airways logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:10 am -
2 stops27h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Breeze Airways logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/111:10 am -
2 stops27h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Breeze Airways logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:54 pm -
2 stops20h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:20 pm -
1 stop16h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:27 pm -
1 stop23h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Frontier logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 10/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:25 pm -
1 stop18h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Multiple Airlines logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:27 pm -
2 stops18h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 10/6. 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 10/167:20 pm -
1 stop16h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Multiple Airlines logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/317:45 am -
3 stops34h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$241
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 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $244 (Southwest) |
One-way from | $124 (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 10, 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
PittsburghIslip
PIT Pittsburgh - ISP Islip Long Island
PITISP
Pittsburgh
Sat 10/31
6:25 am-5:20 pm
2 stops10h 55m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$124
PittsburghIslip
PIT Pittsburgh - ISP Islip Long Island
PITISP
Pittsburgh
Mon 11/2
8:54 pm-11:20 am
1 stop14h 26m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$168
PhiladelphiaIslip
PHL Philadelphia - ISP Islip Long Island
PHLISP
Philadelphia
Mon 10/19
7:20 pm-11:20 am
1 stop16h 00m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$206
PhiladelphiaIslip
PHL Philadelphia - ISP Islip Long Island
PHLISP
Philadelphia
Sun 11/1
7:25 pm-2:22 pm
1 stop18h 57m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$211
PhiladelphiaIslip
PHL Philadelphia - ISP Islip Long Island
PHLISP
Philadelphia
Fri 10/16
7:20 pm-11:20 am
1 stop16h 00m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$236
PittsburghIslip
PIT Pittsburgh - ISP Islip Long Island
PITISP
Pittsburgh
Fri 10/30
6:00 pm-11:40 pm
1 stop5h 40m
Islip Long Island
Sat 10/31
6:00 am-11:05 am
1 stop5h 05m
$244
PittsburghIslip
PIT Pittsburgh - ISP Islip Long Island
PITISP
Pittsburgh
Thu 11/19
12:20 pm-4:15 pm
1 stop3h 55m
Islip Long Island
Thu 11/26
11:40 am-4:50 pm
1 stop5h 10m
$295
PittsburghIslip
PIT Pittsburgh - ISP Islip Long Island
PITISP
Pittsburgh
Wed 11/4
4:00 pm-9:45 pm
1 stop5h 45m
Islip Long Island
Wed 11/11
12:30 pm-5:55 pm
1 stop5h 25m
$295
PittsburghIslip
PIT Pittsburgh - ISP Islip Long Island
PITISP
Pittsburgh
Fri 10/23
8:54 pm-11:20 am
1 stop14h 26m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$310
PhiladelphiaIslip
PHL Philadelphia - ISP Islip Long Island
PHLISP
Philadelphia
Mon 10/19
3:20 pm-11:40 pm
2 stops8h 20m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$339
Showing 1-10 of 22 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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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 10, 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 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$196 | Average$413 | FlexibilityNo cancel fee | On-time63% |