$100+ Cheap flights from Pennsylvania to Islip, NY (ISP)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
Sep 3 — Sep 101
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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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 August 4, 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 August 4, 2026.
This Southwest deal was found by Cheapflights users on 7/30. 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.
Sat 9/266:10 am -
1 stop5h 55m
Mon 9/284:05 pm -
1 stop5h 50m
Deal found 7/30![Southwest logo]()
$201
This Trip.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2311:12 am -
1 stop5h 46m
Tue 9/295:43 pm -
1 stop16h 34m
Deal found 8/2![Frontier logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/111:05 am -
1 stop22h 48m
Tue 9/225:43 pm -
1 stop16h 34m
Deal found 8/1![Frontier logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/111:05 am -
2 stops26h 28m
Tue 9/225:43 pm -
1 stop16h 34m
Deal found 8/1![Multiple Airlines logo]()
$226
This Southwest deal was found by Cheapflights users on 8/4. 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 9/158:10 am -
2 stops8h 50m
Thu 9/174:05 pm -
1 stop5h 50m
Deal found 8/4![Southwest logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/294:52 pm -
1 stop17h 01m
Sun 8/307:09 pm -
1 stop14h 41m
Deal found 7/31![Frontier logo]()
$229
This Trip.com deal was found by Cheapflights users on 8/1. 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.
Thu 9/1011:12 am -
1 stop5h 46m
Tue 9/155:43 pm -
1 stop16h 34m
Deal found 8/1![Frontier logo]()
$230
This Trip.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:05 am -
1 stop22h 48m
Mon 9/710:57 am -
1 stop23h 10m
Deal found 8/2![Frontier logo]()
$236
This Frontier deal was found by Cheapflights users on 8/1. 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 8/2812:28 pm -
1 stop6h 33m
Fri 9/410:57 am -
1 stop10h 02m
Deal found 8/1![Frontier logo]()
$248
This Trip.com deal was found by Cheapflights users on 8/3. 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 9/2511:12 am -
1 stop5h 46m
Sun 9/276:48 pm -
1 stop18h 15m
Deal found 8/3![Frontier logo]()
$249
This Frontier deal was found by Cheapflights users on 8/1. 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 8/274:52 pm -
1 stop17h 01m
Mon 8/317:09 pm -
1 stop14h 58m
Deal found 8/1![Frontier logo]()
$250
This Trip.com deal was found by Cheapflights users on 7/31. 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.
Thu 8/274:52 pm -
1 stop17h 01m
Sun 8/307:09 pm -
1 stop14h 41m
Deal found 7/31![Frontier logo]()
$265
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 August 4, 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 August 4, 2026.
This Southwest deal was found by Cheapflights users on 7/30. 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.
Sat 9/266:10 am -
1 stop5h 55m
Mon 9/284:05 pm -
1 stop5h 50m
Deal found 7/30![Southwest logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/19:16 pm -
1 stop12h 37m
Mon 9/710:57 am -
2 stops25h 29m
Deal found 8/3![Frontier logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/304:52 pm -
1 stop17h 01m
Sun 9/67:49 pm -
2 stops45h 25m
Deal found 7/31![Multiple Airlines logo]()
$313
This Priceline deal was found by Cheapflights users on 7/30. 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.
Mon 8/243:20 pm -
1 stop6h 24m
Wed 8/2611:35 am -
1 stop8h 24m
Deal found 7/30![JetBlue logo]()
$319
This Southwest deal was found by Cheapflights users on 8/4. 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 9/158:10 am -
2 stops8h 50m
Thu 9/174:05 pm -
1 stop5h 50m
Deal found 8/4![Southwest logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 8/2810:45 am -
1 stop23h 08m
Mon 8/317:09 pm -
1 stop14h 58m
Deal found 8/3![Frontier logo]()
$298
This Southwest deal was found by Cheapflights users on 8/2. 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 11/135:50 am -
1 stop5h 55m
Sun 11/154:25 pm -
1 stop8h 00m
Deal found 8/2![Southwest logo]()
$279
This Booking.com deal was found by Cheapflights users on 8/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:53 pm -
1 stop18h 52m
Sun 10/2510:57 am -
2 stops27h 24m
Deal found 8/3![Breeze Airways logo]()
$665
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 10/166:00 am -
1 stop8h 22m
Sat 10/174:13 pm -
2 stops18h 05m
Deal found 8/4![Multiple Airlines logo]()
$340
This JetBlue deal was found by Cheapflights users on 7/31. 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.
Thu 10/13:38 pm -
1 stop7h 44m
Mon 10/54:26 pm -
1 stop7h 20m
Deal found 7/31![JetBlue logo]()
$343
This Southwest deal was found by Cheapflights users on 8/1. 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 9/93:25 pm -
1 stop5h 45m
Sat 9/126:00 am -
2 stops8h 45m
Deal found 8/1![Southwest logo]()
$291
This JetBlue deal was found by Cheapflights users on 7/31. 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.
Sat 9/194:30 pm -
1 stop6h 52m
Wed 9/237:00 am -
1 stop7h 07m
Deal found 7/31![JetBlue logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Thu 9/32:10 pm -
1 stop21h 09m
Sat 9/510:57 am -
2 stops11h 55m
Deal found 7/30![Multiple Airlines logo]()
$351
This Southwest deal was found by Cheapflights users on 8/4. 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 9/144:10 pm -
1 stop6h 00m
Thu 9/176:10 am -
1 stop6h 00m
Deal found 8/4![Southwest logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/173:30 pm -
1 stop25h 28m
Thu 9/246:48 pm -
1 stop24h 37m
Deal found 8/4![Frontier logo]()
$378
This Southwest deal was found by Cheapflights users on 8/1. 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 10/2312:10 pm -
1 stop4h 50m
Sun 10/255:40 am -
1 stop5h 50m
Deal found 8/1![Southwest logo]()
$294
This KAYAK deal was found by Cheapflights users on 7/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/313:20 pm -
1 stop6h 24m
Wed 9/211:35 am -
1 stop8h 24m
Deal found 7/30![JetBlue logo]()
$387
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/95:55 am -
1 stop11h 03m
Sun 9/275:43 pm -
1 stop7h 18m
Deal found 8/4![Frontier logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 8/218:35 am -
1 stop10h 26m
Mon 8/248:43 pm -
2 stops28h 33m
Deal found 8/1![Multiple Airlines logo]()
$401
This JetBlue deal was found by Cheapflights users on 7/30. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:30 pm -
1 stop9h 07m
Sat 10/316:00 am -
1 stop9h 04m
Deal found 7/30![JetBlue logo]()
$413
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/910:29 pm -
2 stops20h 36m
Sun 9/275:43 pm -
1 stop7h 18m
Deal found 8/4![Multiple Airlines logo]()
$420
This Southwest deal was found by Cheapflights users on 8/1. 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 9/116:00 am -
1 stop5h 55m
Mon 9/145:00 pm -
1 stop6h 55m
Deal found 8/1![Southwest logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/58:29 pm -
1 stop13h 24m
Mon 9/710:57 am -
2 stops10h 02m
Deal found 8/3![Frontier logo]()
$449
This Southwest deal was found by Cheapflights users on 7/31. 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 9/96:00 am -
1 stop8h 55m
Mon 9/145:00 pm -
1 stop6h 55m
Deal found 7/31![Southwest logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 8/1611:03 am -
1 stop26h 25m
Thu 8/207:09 pm -
1 stop14h 26m
Deal found 8/1![Multiple Airlines logo]()
$441
This Southwest deal was found by Cheapflights users on 8/3. 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 9/1012:55 pm -
1 stop8h 40m
Mon 9/145:00 pm -
1 stop6h 55m
Deal found 8/3![Southwest logo]()
$357
This Expedia deal was found by Cheapflights users on 7/30. 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.
Mon 8/249:29 am -
1 stop12h 15m
Fri 8/286:00 am -
1 stop8h 54m
Deal found 7/30![JetBlue logo]()
$479
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Mon 8/248:29 pm -
1 stop13h 24m
Fri 8/2810:57 am -
2 stops12h 17m
Deal found 7/30![Frontier logo]()
$485
This Southwest deal was found by Cheapflights users on 7/31. 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 9/256:00 am -
1 stop5h 55m
Mon 9/281:15 pm -
2 stops10h 40m
Deal found 7/31![Southwest logo]()
$362
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Wed 8/198:29 pm -
1 stop13h 24m
Mon 8/2410:57 am -
2 stops10h 02m
Deal found 7/30![Frontier logo]()
$489
Last-minute flights from Pennsylvania to IslipDiscover last-minute flight deals from Pennsylvania to Islip. Data last updated August 4, 2026 and is based on user searches.
Discover last-minute flight deals from Pennsylvania to Islip. Data last updated August 4, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/1. 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 8/274:52 pm -
1 stop17h 01m
Mon 8/317:09 pm -
1 stop14h 58m
Deal found 8/1![Frontier logo]()
$250
This Trip.com deal was found by Cheapflights users on 7/31. 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.
Thu 8/274:52 pm -
1 stop17h 01m
Sun 8/307:09 pm -
1 stop14h 41m
Deal found 7/31![Frontier logo]()
$265
This Frontier deal was found by Cheapflights users on 8/1. 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 8/2812:28 pm -
1 stop6h 33m
Fri 9/410:57 am -
1 stop10h 02m
Deal found 8/1![Frontier logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/294:52 pm -
1 stop17h 01m
Sun 8/307:09 pm -
1 stop14h 41m
Deal found 7/31![Frontier logo]()
$229
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/111:05 am -
1 stop22h 48m
Tue 9/225:43 pm -
1 stop16h 34m
Deal found 8/1![Frontier logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/111:05 am -
2 stops26h 28m
Tue 9/225:43 pm -
1 stop16h 34m
Deal found 8/1![Multiple Airlines logo]()
$226
This Trip.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:05 am -
1 stop22h 48m
Mon 9/710:57 am -
1 stop23h 10m
Deal found 8/2![Frontier logo]()
$236
This Trip.com deal was found by Cheapflights users on 8/1. 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.
Thu 9/1011:12 am -
1 stop5h 46m
Tue 9/155:43 pm -
1 stop16h 34m
Deal found 8/1![Frontier logo]()
$230
This Southwest deal was found by Cheapflights users on 8/4. 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 9/158:10 am -
2 stops8h 50m
Thu 9/174:05 pm -
1 stop5h 50m
Deal found 8/4![Southwest logo]()
$226
This Trip.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2311:12 am -
1 stop5h 46m
Tue 9/295:43 pm -
1 stop16h 34m
Deal found 8/2![Frontier logo]()
$211
This Trip.com deal was found by Cheapflights users on 8/3. 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 9/2511:12 am -
1 stop5h 46m
Sun 9/276:48 pm -
1 stop18h 15m
Deal found 8/3![Frontier logo]()
$249
This Southwest deal was found by Cheapflights users on 7/30. 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.
Sat 9/266:10 am -
1 stop5h 55m
Mon 9/284:05 pm -
1 stop5h 50m
Deal found 7/30![Southwest logo]()
$201
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 August 4, 2026.
Search for one-way flight options from Pennsylvania to Islip. Find affordable one-way fares based on user searches. Data last updated August 4, 2026.
This Expedia deal was found by Cheapflights users on 8/3. 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.
Sat 8/2912:28 pm -
1 stop6h 33m
Deal found 8/3![Frontier logo]()
$100
This Trip.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2211:12 am -
1 stop5h 46m
Deal found 8/1![Frontier logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 8/3112:00 pm -
2 stops21h 53m
Deal found 8/2![Multiple Airlines logo]()
$106
This Trip.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2511:05 am -
1 stop22h 48m
Deal found 8/4![Frontier logo]()
$109
This Southwest deal was found by Cheapflights users on 8/2. 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 8/275:35 am -
1 stop4h 05m
Deal found 8/2![Southwest logo]()
$111
This Frontier deal was found by Cheapflights users on 7/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/412:28 pm -
1 stop6h 33m
Deal found 7/30![Frontier logo]()
$119
This Frontier deal was found by Cheapflights users on 8/2. 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.
Sat 8/2212:28 pm -
1 stop6h 33m
Deal found 8/2![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/117:15 am -
1 stop9h 43m
Deal found 8/3![Frontier logo]()
$127
This Expedia deal was found by Cheapflights users on 8/3. 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.
Mon 8/2412:28 pm -
1 stop6h 33m
Deal found 8/3![Frontier logo]()
$129
This Expedia deal was found by Cheapflights users on 8/1. 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.
Mon 9/710:45 am -
1 stop23h 08m
Deal found 8/1![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 10/97:20 pm -
1 stop16h 00m
Deal found 8/2![Multiple Airlines logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 10/95:38 pm -
2 stops21h 25m
Deal found 8/2![Frontier logo]()
$144
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 August 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $201 (Southwest) |
One-way from | $100 (Expedia) |
Cheapflights Fare Finder
Customize your flight search to find flights from Pennsylvania to Islip that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 4, 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 - ISP
PITISP
Pittsburgh
Sat 9/26
6:10 am-12:05 pm
1 stop5h 55m
Islip Long Island
Mon 9/28
4:05 pm-9:55 pm
1 stop5h 50m
$201
PittsburghIslip
PIT - ISP
PITISP
Pittsburgh
Tue 9/15
8:10 am-5:00 pm
2 stops8h 50m
Islip Long Island
Thu 9/17
4:05 pm-9:55 pm
1 stop5h 50m
$226
PhiladelphiaIslip
PHL - ISP
PHLISP
Philadelphia
Tue 9/1
9:16 pm-9:53 am
1 stop12h 37m
Islip Long Island
Mon 9/7
10:57 am-12:26 pm
2 stops25h 29m
$271
PittsburghIslip
PIT - ISP
PITISP
Pittsburgh
Fri 11/13
5:50 am-11:45 am
1 stop5h 55m
Islip Long Island
Sun 11/15
4:25 pm-12:25 am
1 stop8h 00m
$279
PittsburghIslip
PIT - ISP
PITISP
Pittsburgh
Wed 9/9
3:25 pm-9:10 pm
1 stop5h 45m
Islip Long Island
Sat 9/12
6:00 am-2:45 pm
2 stops8h 45m
$291
PittsburghIslip
PIT - ISP
PITISP
Pittsburgh
Mon 9/14
4:10 pm-10:10 pm
1 stop6h 00m
Islip Long Island
Thu 9/17
6:10 am-12:10 pm
1 stop6h 00m
$294
Quickest round-trip
PittsburghIslip
PIT - ISP
PITISP
Pittsburgh
Fri 10/23
12:10 pm-5:00 pm
1 stop4h 50m
Islip Long Island
Sun 10/25
5:40 am-11:30 am
1 stop5h 50m
$294
Washington, D.C.Islip
IAD - ISP
IADISP
Washington, D.C. Dulles Intl
Fri 8/28
10:45 am-9:53 am
1 stop23h 08m
Islip Long Island
Mon 8/31
7:09 pm-10:07 am
1 stop14h 58m
$298
Washington, D.C.Islip
IAD - ISP
IADISP
Washington, D.C. Dulles Intl
Sun 8/30
4:52 pm-9:53 am
1 stop17h 01m
Islip Long Island
Sun 9/6
7:49 pm-5:14 pm
2 stops45h 25m
$313
Washington, D.C.Islip
DCA - ISP
DCAISP
Washington, D.C. Reagan-National
Mon 8/24
3:20 pm-9:44 pm
1 stop6h 24m
Islip Long Island
Wed 8/26
11:35 am-7:59 pm
1 stop8h 24m
$319
Showing 1-10 of 60 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
IAD-ISP
PHL-ISP
DCA-ISP
JFK-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
IAD-ISP
PHL-ISP
DCA-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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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 August 4, 2026.
Pennsylvania and 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 2,558,603 searches. Data last updated August 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$196 | Average$424 | FlexibilityNo cancel fee | On-time63% |