$104+ Cheap flights from Islip, NY (ISP) to Pennsylvania
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 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — PHL
May 31 — Haz 71
Round-trip
1 adult, Economy
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Cheapest flights from Islip to PennsylvaniaExplore the most affordable flight options available from Islip to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on Mayıs 1, 2026.
Explore the most affordable flight options available from Islip to Pennsylvania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on Mayıs 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Sal 5/266:02 pm
ISP
- PIT
1 stop25h 18m
Multiple Airlines
Sal 6/25:49 pm
PIT
- ISP
1 stop17h 28m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Sal 5/125:38 pm
ISP
- PIT
1 stop25h 42m
Frontier
Cmt 5/167:15 pm
PIT
- ISP
1 stop15h 12m
Frontier
Deal found 4/27![Frontier logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Sal 6/26:02 pm
ISP
- PHL
1 stop14h 57m
Frontier
Cum 6/55:04 pm
PHL
- ISP
1 stop17h 11m
Frontier
Deal found 4/26![Frontier logo]()
$256
This Southwest deal was found by Cheapflights users on 4/30. 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.
Sal 5/266:30 am
ISP
- PIT
1 stop5h 20m
Southwest
Sal 6/212:50 pm
PIT
- ISP
2 stops9h 20m
Southwest
Deal found 4/30![Southwest logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Sal 6/26:02 pm
ISP
- PHL
1 stop14h 57m
Frontier
Cmt 6/69:16 pm
PHL
- ISP
1 stop12h 49m
Frontier
Deal found 4/26![Frontier logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Sal 6/26:02 pm
ISP
- PHL
1 stop14h 57m
Frontier
Per 6/49:16 pm
PHL
- ISP
1 stop12h 49m
Frontier
Deal found 4/26![Frontier logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Cmt 5/3011:57 am
ISP
- PHL
1 stop6h 43m
Multiple Airlines
Sal 6/28:10 am
PHL
- ISP
2 stops25h 55m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$270
This Trip.com deal was found by Cheapflights users on 4/29. 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.
Per 5/2811:00 am
ISP
- PHL
1 stop13h 40m
Frontier
Çar 6/35:04 pm
PHL
- ISP
1 stop17h 01m
Frontier
Deal found 4/29![Frontier logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Cum 5/1511:00 am
ISP
- LGA
1 stop11h 05m
Multiple Airlines
Sal 5/193:00 pm
LGA
- ISP
1 stop19h 05m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Çar 5/136:09 pm
ISP
- PHL
1 stop25h 51m
Multiple Airlines
Çar 5/205:37 am
PHL
- ISP
1 stop28h 50m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Cum 5/1511:00 am
ISP
- PHL
1 stop8h 18m
Multiple Airlines
Pzt 5/184:35 pm
PHL
- ISP
2 stops24h 12m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Paz 5/3111:00 am
ISP
- PHL
1 stop24h 39m
Frontier
Sal 6/27:55 am
PHL
- ISP
1 stop9h 22m
Frontier
Deal found 4/26![Frontier logo]()
$292
Best flights from Islip to PennsylvaniaDiscover carefully curated flight deals from Islip to Pennsylvania that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated Mayıs 1, 2026.
Discover carefully curated flight deals from Islip to Pennsylvania that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated Mayıs 1, 2026.
This Southwest deal was found by Cheapflights users on 4/26. 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.
Sal 5/266:30 am
ISP
- PIT
1 stop5h 20m
Southwest
Sal 6/212:50 pm
PIT
- ISP
2 stops9h 20m
Southwest
Deal found 4/26![Southwest logo]()
$259
This Trip.com deal was found by Cheapflights users on 4/29. 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.
Per 5/2811:00 am
ISP
- PHL
1 stop13h 40m
Frontier
Çar 6/35:04 pm
PHL
- ISP
1 stop17h 01m
Frontier
Deal found 4/29![Frontier logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Cum 5/1511:00 am
ISP
- LGA
1 stop11h 05m
Multiple Airlines
Sal 5/193:00 pm
LGA
- ISP
1 stop19h 05m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$281
This Priceline deal was found by Cheapflights users on 4/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sal 5/128:59 pm
ISP
- JFK
1 stop11h 59m
JetBlue
Cmt 5/169:50 am
JFK
- ISP
1 stop10h 14m
JetBlue
Deal found 4/27![JetBlue logo]()
$433
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Çar 5/136:09 pm
ISP
- PHL
1 stop25h 51m
Multiple Airlines
Çar 5/205:37 am
PHL
- ISP
1 stop28h 50m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$289
This Southwest deal was found by Cheapflights users on 4/30. 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.
Per 8/65:00 pm
ISP
- PIT
1 stop6h 10m
Southwest
Paz 8/96:00 am
PIT
- ISP
1 stop6h 05m
Southwest
Deal found 4/30![Southwest logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Pzt 5/1811:00 am
ISP
- PHL
1 stop21h 59m
Frontier
Çar 5/2010:11 am
PHL
- ISP
1 stop24h 16m
Frontier
Deal found 4/28![Frontier logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Cum 5/1511:00 am
ISP
- PHL
1 stop8h 18m
Multiple Airlines
Pzt 5/184:35 pm
PHL
- ISP
2 stops24h 12m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$290
This Southwest deal was found by Cheapflights users on 4/26. 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.
Sal 5/266:30 am
ISP
- PIT
1 stop5h 20m
Southwest
Cum 5/292:45 pm
PIT
- ISP
1 stop7h 45m
Southwest
Deal found 4/26![Southwest logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Paz 5/3111:00 am
ISP
- PHL
1 stop24h 39m
Frontier
Cmt 6/69:16 pm
PHL
- ISP
1 stop12h 49m
Frontier
Deal found 4/26![Frontier logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Per 5/2811:00 am
ISP
- PHL
2 stops13h 44m
Multiple Airlines
Çar 6/35:04 pm
PHL
- ISP
1 stop17h 01m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$300
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Cum 5/2911:00 am
ISP
- PHL
1 stop12h 29m
Frontier
Cmt 5/305:34 pm
PHL
- ISP
1 stop16h 31m
Frontier
Deal found 4/30![Frontier logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Pzt 6/18:31 pm
ISP
- PHL
1 stop26h 20m
Multiple Airlines
Cmt 6/69:16 pm
PHL
- ISP
1 stop12h 49m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$307
This Southwest deal was found by Cheapflights users on 4/29. 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.
Cum 5/155:10 pm
ISP
- PIT
1 stop6h 10m
Southwest
Sal 5/195:55 am
PIT
- ISP
2 stops7h 55m
Southwest
Deal found 4/29![Southwest logo]()
$346
This JetBlue deal was found by Cheapflights users on 4/27. 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.
Çar 6/32:35 pm
ISP
- JFK
1 stop7h 48m
JetBlue
Cmt 6/66:00 am
JFK
- ISP
1 stop6h 28m
JetBlue
Deal found 4/27![JetBlue logo]()
$433
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Pzt 6/12:28 pm
ISP
- PHL
2 stops18h 26m
Multiple Airlines
Cum 6/55:04 pm
PHL
- ISP
1 stop17h 11m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 4/27. 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.
Cum 9/186:45 am
ISP
- DCA
1 stop8h 45m
Southwest
Pzt 9/216:00 am
DCA
- ISP
1 stop5h 55m
Southwest
Deal found 4/27![Southwest logo]()
$347
This JetBlue deal was found by Cheapflights users on 4/29. 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.
Cum 5/2912:25 pm
ISP
- JFK
1 stop10h 37m
JetBlue
Sal 6/26:00 am
JFK
- ISP
1 stop7h 39m
JetBlue
Deal found 4/29![JetBlue logo]()
$438
This Southwest deal was found by Cheapflights users on 4/27. 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.
Sal 6/96:25 am
ISP
- DCA
1 stop5h 35m
Southwest
Çar 6/104:40 pm
DCA
- ISP
1 stop5h 55m
Southwest
Deal found 4/27![Southwest logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Pzt 5/112:28 pm
ISP
- LGA
2 stops25h 43m
Multiple Airlines
Cum 5/153:00 pm
LGA
- ISP
1 stop19h 05m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$316
This Southwest deal was found by Cheapflights users on 4/26. 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.
Sal 9/110:30 am
ISP
- DCA
1 stop11h 30m
Southwest
Cmt 9/511:55 am
DCA
- ISP
1 stop7h 35m
Southwest
Deal found 4/26![Southwest logo]()
$352
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Cum 5/2911:00 am
ISP
- PHL
2 stops13h 44m
Multiple Airlines
Cmt 5/305:34 pm
PHL
- ISP
1 stop16h 31m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$321
This Southwest deal was found by Cheapflights users on 4/26. 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.
Sal 5/266:55 am
ISP
- DCA
1 stop8h 50m
Southwest
Sal 6/21:00 pm
DCA
- ISP
1 stop9h 40m
Southwest
Deal found 4/26![Southwest logo]()
$352
This Expedia deal was found by Cheapflights users on 4/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sal 5/128:59 pm
ISP
- JFK
1 stop11h 59m
JetBlue
Çar 5/1310:59 am
JFK
- ISP
1 stop9h 05m
JetBlue
Deal found 4/30![JetBlue logo]()
$533
This Southwest deal was found by Cheapflights users on 4/29. 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.
Cum 6/55:20 am
ISP
- DCA
1 stop6h 40m
Southwest
Paz 6/76:55 am
DCA
- ISP
1 stop9h 45m
Southwest
Deal found 4/29![Southwest logo]()
$362
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Sal 5/125:38 pm
ISP
- LGA
1 stop20h 22m
Multiple Airlines
Cmt 5/168:15 pm
LGA
- ISP
1 stop14h 12m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$365
This Southwest deal was found by Cheapflights users on 4/29. 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.
Per 6/119:10 am
ISP
- PIT
2 stops9h 20m
Southwest
Paz 6/146:40 pm
PIT
- ISP
1 stop5h 35m
Southwest
Deal found 4/29![Southwest logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Pzt 5/2511:00 am
ISP
- LGA
2 stops22h 00m
Multiple Airlines
Pzt 6/18:29 pm
LGA
- ISP
1 stop20h 48m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$407
This Southwest deal was found by Cheapflights users on 4/27. 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.
Cum 5/295:10 pm
ISP
- DCA
1 stop5h 40m
Southwest
Paz 5/311:00 pm
DCA
- ISP
1 stop10h 45m
Southwest
Deal found 4/27![Southwest logo]()
$372
This JetBlue deal was found by Cheapflights users on 4/27. 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.
Pzt 5/252:35 pm
ISP
- JFK
1 stop9h 24m
JetBlue
Pzt 6/16:30 am
JFK
- ISP
1 stop7h 14m
JetBlue
Deal found 4/27![JetBlue logo]()
$673
Last-minute flights from Islip to PennsylvaniaDiscover last-minute flight deals from Islip to Pennsylvania. Data last updated Mayıs 1, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to Pennsylvania. Data last updated Mayıs 1, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 4/30. 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.
Cum 5/811:00 am
ISP
- PIT
1 stop8h 20m
Frontier
Pzt 5/118:15 pm
PIT
- ISP
1 stop14h 45m
Frontier
Deal found 4/30![Frontier logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Sal 5/125:38 pm
ISP
- PIT
1 stop25h 42m
Frontier
Cmt 5/167:15 pm
PIT
- ISP
1 stop15h 12m
Frontier
Deal found 4/27![Frontier logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Sal 5/1211:56 am
ISP
- PIT
2 stops27h 18m
Multiple Airlines
Cmt 5/167:15 pm
PIT
- ISP
1 stop15h 12m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Çar 5/136:09 pm
ISP
- PHL
1 stop25h 51m
Multiple Airlines
Çar 5/205:37 am
PHL
- ISP
1 stop28h 50m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Cum 5/1511:00 am
ISP
- LGA
1 stop11h 05m
Multiple Airlines
Sal 5/193:00 pm
LGA
- ISP
1 stop19h 05m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Cum 5/1511:00 am
ISP
- PHL
1 stop8h 18m
Multiple Airlines
Pzt 5/184:35 pm
PHL
- ISP
2 stops24h 12m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Sal 5/266:02 pm
ISP
- PIT
1 stop25h 18m
Multiple Airlines
Sal 6/25:49 pm
PIT
- ISP
1 stop17h 28m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$234
This Southwest deal was found by Cheapflights users on 4/30. 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.
Sal 5/266:30 am
ISP
- PIT
1 stop5h 20m
Southwest
Sal 6/212:50 pm
PIT
- ISP
2 stops9h 20m
Southwest
Deal found 4/30![Southwest logo]()
$259
This Trip.com deal was found by Cheapflights users on 4/29. 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.
Per 5/2811:00 am
ISP
- PHL
1 stop13h 40m
Frontier
Çar 6/35:04 pm
PHL
- ISP
1 stop17h 01m
Frontier
Deal found 4/29![Frontier logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Cmt 5/3011:57 am
ISP
- PHL
1 stop6h 43m
Multiple Airlines
Sal 6/28:10 am
PHL
- ISP
2 stops25h 55m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Cmt 5/3011:57 am
ISP
- PHL
1 stop4h 41m
Multiple Airlines
Çar 6/35:04 pm
PHL
- ISP
1 stop17h 01m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Paz 5/3111:00 am
ISP
- PHL
1 stop24h 39m
Frontier
Sal 6/27:55 am
PHL
- ISP
1 stop9h 22m
Frontier
Deal found 4/26![Frontier logo]()
$292
One-way flights from Islip to PennsylvaniaSearch for one-way flight options from Islip to Pennsylvania. Find affordable one-way fares based on user searches. Data last updated Mayıs 1, 2026.
Search for one-way flight options from Islip to Pennsylvania. Find affordable one-way fares based on user searches. Data last updated Mayıs 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Sal 5/266:02 pm
ISP
- PHL
1 stop14h 57m
Frontier
Deal found 4/26![Frontier logo]()
$104
This Frontier deal was found by Cheapflights users on 4/29. 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.
Cmt 5/911:00 am
ISP
- PIT
1 stop8h 20m
Frontier
Deal found 4/29![Frontier logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Çar 5/1311:00 am
ISP
- PHL
1 stop24h 39m
Frontier
Deal found 4/28![Frontier logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Sal 5/266:02 pm
ISP
- PHL
2 stops29h 51m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Çar 5/1311:00 am
ISP
- PHL
2 stops12h 32m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Çar 5/2711:00 am
ISP
- PIT
1 stop29h 03m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$123
This Southwest deal was found by Cheapflights users on 4/27. 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.
Çar 5/279:00 am
ISP
- PIT
2 stops9h 15m
Southwest
Deal found 4/27![Southwest logo]()
$127
This Priceline deal was found by Cheapflights users on 4/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cum 7/2410:48 am
ISP
- PIT
1 stop7h 27m
Frontier
Deal found 4/30![Frontier logo]()
$135
This Southwest deal was found by Cheapflights users on 4/27. 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.
Per 10/156:00 am
ISP
- PIT
1 stop5h 45m
Southwest
Deal found 4/27![Southwest logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Çar 8/266:09 pm
ISP
- LGA
1 stop17h 51m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Pzt 8/248:43 pm
ISP
- LGA
2 stops26h 36m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$162
This Southwest deal was found by Cheapflights users on 4/26. 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.
Paz 5/315:15 am
ISP
- DCA
1 stop6h 45m
Southwest
Deal found 4/26![Southwest logo]()
$174
Find flight deals from Islip to Pennsylvania
Keep the following information in mind while searching for Islip to Pennsylvania flight deals. Data was last updated Mayıs 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $234 (Kiwi.com) |
One-way from | $104 (Kiwi.com) |
Popular in | October |
Cheapest in | January |
Average price | $377 |
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to Pennsylvania 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 Mayıs 1, 2026.
Use the filters below to find and compare flights from Islip to Pennsylvania that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Sal 5/26
6:30 am-11:50 am
1 stop5h 20m
Pittsburgh
Sal 6/2
12:50 pm-10:10 pm
2 stops9h 20m
$259
IslipPhiladelphia
ISP - PHL
ISPPHL
Islip Long Island
Per 5/28
11:00 am-12:40 am
1 stop13h 40m
Philadelphia
Çar 6/3
5:04 pm-10:05 am
1 stop17h 01m
$280
IslipNew York
ISP - LGA
ISPLGA
Islip Long Island
Cum 5/15
11:00 am-10:05 pm
1 stop11h 05m
New York LaGuardia
Sal 5/19
3:00 pm-10:05 am
1 stop19h 05m
$281
IslipPhiladelphia
ISP - PHL
ISPPHL
Islip Long Island
Çar 5/13
6:09 pm-8:00 pm
1 stop25h 51m
Philadelphia
Çar 5/20
5:37 am-10:27 am
1 stop28h 50m
$289
IslipPhiladelphia
ISP - PHL
ISPPHL
Islip Long Island
Cum 5/15
11:00 am-7:18 pm
1 stop8h 18m
Philadelphia
Pzt 5/18
4:35 pm-4:47 pm
2 stops24h 12m
$290
IslipPhiladelphia
ISP - PHL
ISPPHL
Islip Long Island
Per 5/28
11:00 am-12:44 am
2 stops13h 44m
Philadelphia
Çar 6/3
5:04 pm-10:05 am
1 stop17h 01m
$300
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Per 8/6
5:00 pm-11:10 pm
1 stop6h 10m
Pittsburgh
Paz 8/9
6:00 am-12:05 pm
1 stop6h 05m
$303
IslipPittsburgh
ISP - PIT
ISPPIT
Islip Long Island
Sal 5/26
6:30 am-11:50 am
1 stop5h 20m
Pittsburgh
Cum 5/29
2:45 pm-10:30 pm
1 stop7h 45m
$303
IslipPhiladelphia
ISP - PHL
ISPPHL
Islip Long Island
Pzt 6/1
8:31 pm-10:51 pm
1 stop26h 20m
Philadelphia
Cmt 6/6
9:16 pm-10:05 am
1 stop12h 49m
$307
IslipPhiladelphia
ISP - PHL
ISPPHL
Islip Long Island
Pzt 5/18
11:00 am-8:59 am
1 stop21h 59m
Philadelphia
Çar 5/20
10:11 am-10:27 am
1 stop24h 16m
$309
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Islip to Pennsylvania
Have a flexible travel schedule? Discover the best time to fly to Pennsylvania from Islip with our price prediction graph.
ISP-PIT
ISP-PHL
ISP-LGA
ISP-DCA
ISP-AVP
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 Islip to Pennsylvania
ISP-USPA
ISP-PIT
ISP-PHL
ISP-LGA
ISP-DCA
No data available for this route at this time. Please check back soon.
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