$90+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — ISP
Oct 4 — Oct 111
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 September 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 September 4, 2026.
This Southwest deal was found by Cheapflights users on 9/2. 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.
Wed 10/284:40 pm -
1 stop6h 00m
Sat 10/316:00 am -
1 stop5h 05m
Deal found 9/2![Southwest logo]()
$201
This Frontier deal was found by Cheapflights users on 9/2. 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 9/2611:12 am -
1 stop5h 46m
Sun 9/276:48 pm -
1 stop18h 15m
Deal found 9/2![Frontier logo]()
$210
This CheapOair deal was found by Cheapflights users on 9/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:32 pm -
1 stop26h 26m
Mon 10/55:43 pm -
1 stop20h 04m
Deal found 9/4![Frontier logo]()
$215
This Trip.com deal was found by Cheapflights users on 8/31. 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.
Sat 10/39:33 am -
1 stop7h 25m
Sun 10/45:43 pm -
1 stop16h 34m
Deal found 8/31![Frontier logo]()
$240
This Trip.com deal was found by Cheapflights users on 8/30. 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.
Mon 9/2811:12 am -
1 stop5h 46m
Mon 10/55:43 pm -
1 stop16h 34m
Deal found 8/30![Frontier logo]()
$250
This Trip.com deal was found by Cheapflights users on 9/1. 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.
Wed 9/1611:12 am -
1 stop5h 46m
Sun 9/206:48 pm -
1 stop18h 05m
Deal found 9/1![Frontier logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/295:55 am -
1 stop11h 03m
Tue 10/61:38 pm -
2 stops11h 23m
Deal found 9/1![Multiple Airlines logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/295:55 am -
1 stop11h 03m
Tue 10/65:43 pm -
1 stop7h 18m
Deal found 9/1![Frontier logo]()
$267
This Trip.com deal was found by Cheapflights users on 9/2. 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.
Thu 10/1511:12 am -
1 stop6h 18m
Fri 10/166:55 pm -
1 stop15h 22m
Deal found 9/2![Frontier logo]()
$268
This Trip.com deal was found by Cheapflights users on 9/1. 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 9/2411:12 am -
1 stop5h 46m
Sun 9/275:43 pm -
1 stop16h 34m
Deal found 9/1![Frontier logo]()
$269
This Southwest deal was found by Cheapflights users on 9/4. 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.
Fri 10/24:20 pm -
2 stops7h 15m
Mon 10/55:40 pm -
1 stop5h 55m
Deal found 9/4![Southwest logo]()
$269
This CheapOair deal was found by Cheapflights users on 9/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:12 am -
1 stop5h 46m
Mon 9/215:43 pm -
1 stop16h 34m
Deal found 9/2![Frontier logo]()
$270
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 September 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 September 4, 2026.
This Southwest deal was found by Cheapflights users on 9/2. 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.
Wed 10/284:40 pm -
1 stop6h 00m
Sat 10/316:00 am -
1 stop5h 05m
Deal found 9/2![Southwest logo]()
$201
This Trip.com deal was found by Cheapflights users on 9/1. 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.
Wed 9/1611:12 am -
1 stop5h 46m
Sun 9/206:48 pm -
1 stop18h 05m
Deal found 9/1![Frontier logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 8/31. 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.
Tue 9/295:55 am -
1 stop11h 03m
Tue 10/61:38 pm -
2 stops11h 23m
Deal found 8/31![Multiple Airlines logo]()
$289
This Expedia deal was found by Cheapflights users on 9/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/112:00 pm -
1 stop11h 22m
Sun 11/16:00 am -
1 stop14h 00m
Deal found 9/2![JetBlue logo]()
$514
This CheapOair deal was found by Cheapflights users on 9/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:12 am -
1 stop5h 46m
Sun 9/206:48 pm -
1 stop18h 05m
Deal found 9/3![Frontier logo]()
$270
This Southwest deal was found by Cheapflights users on 9/4. 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.
Wed 1/1311:45 am -
1 stop8h 25m
Fri 1/155:35 am -
1 stop6h 10m
Deal found 9/4![Southwest logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 8/31. 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.
Tue 9/157:15 am -
1 stop9h 43m
Sat 9/1912:00 pm -
1 stop4h 27m
Deal found 8/31![Multiple Airlines logo]()
$316
This Kiwi.com deal was found by Cheapflights users on 8/31. 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.
Tue 9/295:55 am -
1 stop11h 03m
Tue 10/65:43 pm -
1 stop7h 18m
Deal found 8/31![Frontier logo]()
$293
This Booking.com deal was found by Cheapflights users on 9/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/83:31 pm -
1 stop28h 28m
Sun 1/1010:57 am -
2 stops27h 34m
Deal found 9/2![Breeze Airways logo]()
$665
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Wed 9/307:15 am -
1 stop9h 43m
Wed 10/712:00 pm -
2 stops21h 32m
Deal found 9/2![Multiple Airlines logo]()
$325
This Southwest deal was found by Cheapflights users on 9/4. 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.
Wed 10/79:55 am -
1 stop5h 50m
Fri 10/93:10 pm -
2 stops9h 10m
Deal found 9/4![Southwest logo]()
$335
This Trip.com deal was found by Cheapflights users on 9/3. 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 9/3![Frontier logo]()
$305
This Southwest deal was found by Cheapflights users on 9/4. 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.
Fri 10/24:20 pm -
1 stop6h 50m
Fri 10/93:10 pm -
1 stop8h 25m
Deal found 9/4![Southwest logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/237:42 am -
1 stop6h 40m
Sun 10/256:25 pm -
1 stop15h 07m
Deal found 9/3![Multiple Airlines logo]()
$361
This Southwest deal was found by Cheapflights users on 8/30. 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 10/1012:00 pm -
1 stop8h 10m
Tue 10/134:20 pm -
1 stop6h 20m
Deal found 8/30![Southwest logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 9/187:19 pm -
1 stop16h 01m
Tue 9/225:43 pm -
1 stop15h 47m
Deal found 9/3![Multiple Airlines logo]()
$371
This Frontier deal was found by Cheapflights users on 9/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:00 am -
1 stop12h 03m
Mon 10/55:43 pm -
1 stop6h 26m
Deal found 9/3![Frontier logo]()
$384
This Southwest deal was found by Cheapflights users on 9/2. 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.
Mon 10/195:35 pm -
1 stop5h 40m
Tue 10/204:20 pm -
1 stop6h 20m
Deal found 9/2![Southwest logo]()
$357
This JetBlue deal was found by Cheapflights users on 8/31. 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.
Tue 9/296:00 am -
1 stop9h 36m
Tue 10/64:26 pm -
1 stop7h 20m
Deal found 8/31![JetBlue logo]()
$528
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Thu 10/19:04 pm -
2 stops38h 16m
Wed 10/75:43 pm -
1 stop16h 34m
Deal found 9/1![Multiple Airlines logo]()
$377
This Southwest deal was found by Cheapflights users on 9/1. 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.
Thu 10/15:35 pm -
1 stop5h 35m
Wed 10/74:20 pm -
1 stop6h 20m
Deal found 9/1![Southwest logo]()
$357
This Frontier deal was found by Cheapflights users on 9/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:12 am -
1 stop6h 18m
Sun 10/256:25 pm -
2 stops22h 48m
Deal found 9/3![Frontier logo]()
$399
This FlightHub deal was found by Cheapflights users on 8/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2911:29 am -
1 stop11h 53m
Tue 10/64:26 pm -
1 stop16h 11m
Deal found 8/31![JetBlue logo]()
$541
This Frontier deal was found by Cheapflights users on 9/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2510:10 am -
1 stop6h 48m
Thu 10/15:43 pm -
1 stop24h 48m
Deal found 9/3![Frontier logo]()
$407
This Southwest deal was found by Cheapflights users on 9/2. 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 9/175:35 am -
1 stop4h 05m
Mon 9/2112:35 pm -
2 stops8h 35m
Deal found 9/2![Southwest logo]()
$372
This Justfly.com deal was found by Cheapflights users on 9/3. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:00 am -
1 stop17h 22m
Wed 10/77:00 am -
1 stop14h 28m
Deal found 9/3![JetBlue logo]()
$553
This Southwest deal was found by Cheapflights users on 8/31. 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.
Thu 11/56:10 am -
1 stop6h 30m
Sat 11/73:00 pm -
1 stop5h 55m
Deal found 8/31![Southwest logo]()
$377
This Kiwi.com deal was found by Cheapflights users on 9/4. 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.
Sun 10/49:04 pm -
2 stops38h 16m
Sun 10/116:25 pm -
1 stop15h 52m
Deal found 9/4![Multiple Airlines logo]()
$462
This Frontier deal was found by Cheapflights users on 9/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:55 am -
1 stop11h 03m
Tue 10/65:43 pm -
1 stop7h 18m
Deal found 9/3![Frontier logo]()
$420
This Priceline deal was found by Cheapflights users on 9/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:00 pm -
1 stop11h 22m
Wed 10/77:00 am -
1 stop7h 07m
Deal found 9/3![JetBlue logo]()
$570
Last-minute flights from Pennsylvania to IslipDiscover last-minute flight deals from Pennsylvania to Islip. Data last updated September 4, 2026 and is based on user searches.
Discover last-minute flight deals from Pennsylvania to Islip. Data last updated September 4, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 9/1. 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.
Wed 9/1611:12 am -
1 stop5h 46m
Sun 9/206:48 pm -
1 stop18h 05m
Deal found 9/1![Frontier logo]()
$252
This CheapOair deal was found by Cheapflights users on 9/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:12 am -
1 stop5h 46m
Mon 9/215:43 pm -
1 stop16h 34m
Deal found 9/2![Frontier logo]()
$270
This Trip.com deal was found by Cheapflights users on 9/1. 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 9/2411:12 am -
1 stop5h 46m
Sun 9/275:43 pm -
1 stop16h 34m
Deal found 9/1![Frontier logo]()
$269
This Frontier deal was found by Cheapflights users on 9/2. 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 9/2611:12 am -
1 stop5h 46m
Sun 9/276:48 pm -
1 stop18h 15m
Deal found 9/2![Frontier logo]()
$210
This Trip.com deal was found by Cheapflights users on 8/30. 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.
Mon 9/2811:12 am -
1 stop5h 46m
Mon 10/55:43 pm -
1 stop16h 34m
Deal found 8/30![Frontier logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/295:55 am -
1 stop11h 03m
Tue 10/61:38 pm -
2 stops11h 23m
Deal found 9/1![Multiple Airlines logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/295:55 am -
1 stop11h 03m
Tue 10/65:43 pm -
1 stop7h 18m
Deal found 9/1![Frontier logo]()
$267
This CheapOair deal was found by Cheapflights users on 9/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:32 pm -
1 stop26h 26m
Mon 10/55:43 pm -
1 stop20h 04m
Deal found 9/4![Frontier logo]()
$215
This Southwest deal was found by Cheapflights users on 9/4. 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.
Fri 10/24:20 pm -
2 stops7h 15m
Mon 10/55:40 pm -
1 stop5h 55m
Deal found 9/4![Southwest logo]()
$269
This Trip.com deal was found by Cheapflights users on 8/31. 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.
Sat 10/39:33 am -
1 stop7h 25m
Sun 10/45:43 pm -
1 stop16h 34m
Deal found 8/31![Frontier logo]()
$240
This Trip.com deal was found by Cheapflights users on 9/2. 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.
Thu 10/1511:12 am -
1 stop6h 18m
Fri 10/166:55 pm -
1 stop15h 22m
Deal found 9/2![Frontier logo]()
$268
This Southwest deal was found by Cheapflights users on 9/2. 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.
Wed 10/284:40 pm -
1 stop6h 00m
Sat 10/316:00 am -
1 stop5h 05m
Deal found 9/2![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 September 4, 2026.
Search for one-way flight options from Pennsylvania to Islip. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
This Frontier deal was found by Cheapflights users on 9/2. 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.
Wed 9/3011:12 am -
1 stop5h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$90
This Jetabroad deal was found by Cheapflights users on 8/30. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2211:12 am -
1 stop5h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/30![Frontier logo]()
$94
This Orbitz deal was found by Cheapflights users on 9/3. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/39:33 am -
1 stop7h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$100
This Frontier deal was found by Cheapflights users on 9/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:12 am -
1 stop6h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$102
This Frontier deal was found by Cheapflights users on 9/2. 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.
Mon 9/2811:12 am -
1 stop5h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$110
This Frontier deal was found by Cheapflights users on 8/30. 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.
Thu 10/111:12 am -
1 stop5h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/30![Frontier logo]()
$129
This Expedia deal was found by Cheapflights users on 9/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2411:12 am -
1 stop5h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$130
This Expedia deal was found by Cheapflights users on 9/3. 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 11/239:35 pm -
1 stop18h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$135
This CheapOair deal was found by Cheapflights users on 9/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:32 pm -
1 stop26h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Sat 10/107:35 am -
1 stop9h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 8/31. 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.
Fri 10/166:36 pm -
2 stops22h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Multiple Airlines logo]()
$148
This Frontier deal was found by Cheapflights users on 9/2. 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.
Thu 9/1011:12 am -
1 stop5h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$150
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 September 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $201 (Southwest) |
One-way from | $90 (Frontier) |
Popular in | February |
Cheapest in | March |
Average price | $211 |
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 September 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
Washington, D.C.Islip
IAD Washington, D.C. Dulles Intl - ISP Islip Long Island
IADISP
Washington, D.C. Dulles Intl
Mon 9/28
11:12 am-4:58 pm
1 stop5h 46m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$110
Washington, D.C.Islip
IAD Washington, D.C. Dulles Intl - ISP Islip Long Island
IADISP
Washington, D.C. Dulles Intl
Sun 10/11
11:12 am-5:30 pm
1 stop6h 18m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$129
Washington, D.C.Islip
IAD Washington, D.C. Dulles Intl - ISP Islip Long Island
IADISP
Washington, D.C. Dulles Intl
Thu 10/1
11:12 am-4:58 pm
1 stop5h 46m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$129
Washington, D.C.Islip
IAD Washington, D.C. Dulles Intl - ISP Islip Long Island
IADISP
Washington, D.C. Dulles Intl
Fri 10/2
11:12 am-4:58 pm
1 stop5h 46m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$130
Washington, D.C.Islip
IAD Washington, D.C. Dulles Intl - ISP Islip Long Island
IADISP
Washington, D.C. Dulles Intl
Thu 9/24
11:12 am-4:58 pm
1 stop5h 46m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$130
PhiladelphiaIslip
PHL Philadelphia - ISP Islip Long Island
PHLISP
Philadelphia
Sat 10/10
7:35 am-5:30 pm
1 stop9h 55m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$148
Washington, D.C.Islip
IAD Washington, D.C. Dulles Intl - ISP Islip Long Island
IADISP
Washington, D.C. Dulles Intl
Mon 9/21
6:36 pm-4:58 pm
2 stops22h 22m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$156
Washington, D.C.Islip
IAD Washington, D.C. Dulles Intl - ISP Islip Long Island
IADISP
Washington, D.C. Dulles Intl
Thu 9/10
11:12 am-4:58 pm
1 stop5h 46m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$160
PhiladelphiaIslip
PHL Philadelphia - ISP Islip Long Island
PHLISP
Philadelphia
Sat 10/10
5:20 pm-10:17 am
2 stops16h 57m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$163
Washington, D.C.Islip
IAD Washington, D.C. Dulles Intl - ISP Islip Long Island
IADISP
Washington, D.C. Dulles Intl
Tue 9/22
7:50 am-4:58 pm
2 stops33h 08m
Islip Long Island
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$167
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
EWR-ISP
LGA-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
IAD-ISP
EWR-ISP
LGA-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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Complete your trip
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Search flights from Pennsylvania to Islip by cabin class
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Other flights to Islip
Explore flights to Islip departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 4, 2026.
Pennsylvania and Islip flights
Browse other Pennsylvania and Islip flight options. Last updated on September 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Pennsylvania to Islip flights
Consider these flights traveling from Pennsylvania to Islip.
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 September 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$196 | Average$512 | FlexibilityNo cancel fee | On-time63% |