$120+ Cheap flights from Islip, NY (ISP) to California
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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — LAX
Sep 4 — Sep 111
Round-trip
1 adult, Economy
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Find cheap flights from Islip to California 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 Islip to CaliforniaExplore the most affordable flight options available from Islip to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 5, 2026.
Explore the most affordable flight options available from Islip to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 5, 2026.
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.
Tue 9/110:57 am -
1 stop10h 21m
Tue 9/811:34 pm -
1 stop14h 24m
Deal found 8/2![Frontier logo]()
$228
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2910:57 am -
1 stop13h 47m
Tue 9/19:41 pm -
1 stop9h 12m
Deal found 7/31![Frontier logo]()
$250
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:43 pm -
1 stop17h 24m
Wed 9/1610:06 pm -
1 stop15h 52m
Deal found 8/2![Frontier logo]()
$260
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:43 pm -
1 stop17h 24m
Tue 9/2910:06 pm -
1 stop15h 52m
Deal found 8/1![Frontier logo]()
$277
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.
Thu 10/224:13 pm -
1 stop29h 35m
Mon 10/269:56 pm -
1 stop13h 37m
Deal found 8/3![Frontier logo]()
$283
This Frontier deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3110:57 am -
1 stop13h 47m
Fri 9/49:41 pm -
1 stop9h 12m
Deal found 8/5![Frontier logo]()
$284
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.
Mon 8/3110:57 am -
1 stop13h 47m
Thu 9/39:41 pm -
1 stop9h 12m
Deal found 8/1![Frontier logo]()
$294
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/254:58 pm -
1 stop8h 51m
Sat 8/299:41 pm -
1 stop9h 12m
Deal found 8/1![Multiple Airlines logo]()
$298
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:09 pm -
1 stop29h 35m
Tue 8/2511:34 am -
1 stop19h 19m
Deal found 8/2![Frontier logo]()
$304
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:57 am -
1 stop10h 15m
Wed 9/211:20 pm -
1 stop15h 54m
Deal found 8/3![Frontier logo]()
$308
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/84:58 pm -
1 stop8h 51m
Sat 9/1210:06 pm -
1 stop15h 52m
Deal found 8/1![Multiple Airlines logo]()
$309
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/174:13 pm -
1 stop20h 13m
Sat 10/2410:12 pm -
1 stop8h 21m
Deal found 8/2![Frontier logo]()
$319
Best flights from Islip to CaliforniaDiscover carefully curated flight deals from Islip to California that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
Discover carefully curated flight deals from Islip to California that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/174:13 pm -
1 stop20h 13m
Sat 10/2410:12 pm -
1 stop8h 21m
Deal found 8/2![Frontier logo]()
$319
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 11/114:05 pm -
1 stop7h 50m
Wed 11/186:35 am -
1 stop6h 40m
Deal found 8/1![Southwest logo]()
$347
This JetBlue deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/274:58 pm -
1 stop10h 01m
Tue 9/18:50 am -
1 stop9h 59m
Deal found 8/5![JetBlue logo]()
$363
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/254:58 pm -
1 stop8h 51m
Fri 8/2811:25 pm -
2 stops11h 08m
Deal found 8/3![Multiple Airlines logo]()
$385
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.
Thu 9/244:05 pm -
1 stop9h 40m
Mon 9/2810:35 pm -
1 stop8h 40m
Deal found 8/1![Southwest logo]()
$347
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2010:57 am -
1 stop13h 47m
Wed 8/269:41 pm -
1 stop9h 12m
Deal found 7/31![Frontier logo]()
$365
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.
Wed 8/263:20 pm -
2 stops10h 15m
Mon 8/3110:40 pm -
1 stop8h 35m
Deal found 8/2![Southwest logo]()
$352
This Frontier deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2610:57 am -
1 stop13h 47m
Fri 8/289:41 pm -
1 stop9h 12m
Deal found 8/5![Frontier logo]()
$366
This Southwest deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/274:05 pm -
2 stops8h 50m
Mon 8/3110:40 pm -
2 stops10h 30m
Deal found 8/5![Southwest logo]()
$357
This JetBlue deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:00 am -
1 stop9h 33m
Sun 11/19:57 am -
1 stop8h 40m
Deal found 8/5![JetBlue logo]()
$435
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 10/155:40 pm -
2 stops10h 45m
Mon 10/1911:05 pm -
2 stops10h 05m
Deal found 8/2![Southwest logo]()
$357
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:43 pm -
3 stops21h 18m
Fri 8/217:30 am -
3 stops27h 03m
Deal found 8/2![Breeze Airways logo]()
$972
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 10/225:40 pm -
2 stops10h 45m
Mon 10/2611:05 pm -
2 stops10h 05m
Deal found 8/3![Southwest logo]()
$357
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 9/13:20 pm -
1 stop7h 40m
Tue 9/111:00 pm -
1 stop8h 15m
Deal found 8/4![Southwest logo]()
$369
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.
Sat 10/1712:20 pm -
2 stops10h 00m
Sat 10/248:25 am -
2 stops10h 20m
Deal found 8/2![Southwest logo]()
$379
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.
Tue 9/16:05 am -
1 stop8h 30m
Mon 9/710:30 pm -
1 stop8h 45m
Deal found 8/3![Southwest logo]()
$380
This Southwest deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/165:40 pm -
1 stop9h 30m
Tue 10/209:50 pm -
1 stop11h 20m
Deal found 8/5![Southwest logo]()
$385
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.
Wed 9/910:30 am -
2 stops12h 35m
Wed 9/168:00 am -
2 stops10h 10m
Deal found 8/2![Southwest logo]()
$406
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:45 pm -
2 stops23h 30m
Thu 10/17:30 am -
2 stops48h 50m
Deal found 8/3![Breeze Airways logo]()
$988
This United deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:31 am -
2 stops18h 04m
Sat 8/297:00 am -
2 stops24h 30m
Deal found 8/5![Multiple Airlines logo]()
$1,015
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.
Thu 9/176:10 am -
1 stop9h 50m
Mon 9/2110:30 pm -
1 stop8h 45m
Deal found 8/4![Southwest logo]()
$412
This United 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1810:05 am -
2 stops15h 30m
Tue 8/257:00 am -
2 stops24h 56m
Deal found 8/2![Multiple Airlines logo]()
$1,035
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.
Tue 9/112:55 pm -
1 stop9h 40m
Mon 9/710:40 pm -
1 stop8h 35m
Deal found 8/2![Southwest logo]()
$412
This United 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:05 am -
2 stops18h 30m
Tue 8/257:00 am -
2 stops24h 56m
Deal found 8/2![Multiple Airlines logo]()
$1,035
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.
Thu 9/34:05 pm -
1 stop9h 45m
Mon 9/710:40 pm -
1 stop8h 35m
Deal found 8/1![Southwest logo]()
$412
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:38 pm -
3 stops56h 39m
Wed 9/307:30 am -
3 stops32h 21m
Deal found 8/4![Breeze Airways logo]()
$1,199
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.
Fri 9/1812:35 pm -
1 stop7h 25m
Fri 9/259:55 am -
1 stop9h 15m
Deal found 8/4![Southwest logo]()
$413
This KAYAK deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/152:33 pm -
3 stops28h 20m
Mon 8/247:30 am -
2 stops24h 46m
Deal found 8/5![Breeze Airways logo]()
$1,247
This United 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/289:05 am -
2 stops12h 06m
Tue 9/15:00 am -
2 stops12h 15m
Deal found 8/3![Multiple Airlines logo]()
$1,156
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.
Sun 1/105:45 am -
1 stop11h 35m
Wed 1/276:45 am -
2 stops11h 45m
Deal found 8/3![Southwest logo]()
$417
Last-minute flights from Islip to CaliforniaDiscover last-minute flight deals from Islip to California. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to California. Data last updated August 5, 2026 and is based on user searches.
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:09 pm -
1 stop29h 35m
Tue 8/2511:34 am -
1 stop19h 19m
Deal found 8/2![Frontier logo]()
$304
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/254:58 pm -
1 stop8h 51m
Sat 8/299:41 pm -
1 stop9h 12m
Deal found 8/1![Multiple Airlines logo]()
$298
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:57 am -
1 stop13h 47m
Tue 9/19:41 pm -
1 stop9h 12m
Deal found 8/3![Frontier logo]()
$320
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:57 am -
1 stop10h 15m
Wed 9/211:20 pm -
1 stop15h 54m
Deal found 8/3![Frontier logo]()
$308
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.
Fri 8/2810:57 am -
1 stop10h 15m
Tue 9/18:50 am -
1 stop9h 59m
Deal found 8/3![Multiple Airlines logo]()
$319
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2910:57 am -
1 stop13h 47m
Tue 9/19:41 pm -
1 stop9h 12m
Deal found 7/31![Frontier logo]()
$250
This Frontier deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3110:57 am -
1 stop13h 47m
Fri 9/49:41 pm -
1 stop9h 12m
Deal found 8/5![Frontier logo]()
$284
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.
Mon 8/3110:57 am -
1 stop13h 47m
Thu 9/39:41 pm -
1 stop9h 12m
Deal found 8/1![Frontier logo]()
$294
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.
Tue 9/110:57 am -
1 stop10h 21m
Tue 9/811:34 pm -
1 stop14h 24m
Deal found 8/2![Frontier logo]()
$228
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/84:58 pm -
1 stop8h 51m
Sat 9/1210:06 pm -
1 stop15h 52m
Deal found 8/1![Multiple Airlines logo]()
$309
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:43 pm -
1 stop17h 24m
Wed 9/1610:06 pm -
1 stop15h 52m
Deal found 8/2![Frontier logo]()
$260
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:43 pm -
1 stop17h 24m
Tue 9/2910:06 pm -
1 stop15h 52m
Deal found 8/1![Frontier logo]()
$277
One-way flights from Islip to CaliforniaSearch for one-way flight options from Islip to California. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
Search for one-way flight options from Islip to California. Find affordable one-way fares based on user searches. Data last updated August 5, 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.
Mon 8/317:09 pm -
1 stop26h 09m
Deal found 8/3![Frontier logo]()
$120
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 8/317:09 pm -
1 stop29h 35m
Deal found 8/3![Frontier logo]()
$131
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2810:57 am -
1 stop10h 15m
Deal found 8/3![Frontier logo]()
$137
This Frontier deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2810:57 am -
1 stop13h 47m
Deal found 8/5![Frontier logo]()
$148
This Frontier deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/610:57 am -
1 stop13h 47m
Deal found 8/5![Frontier logo]()
$165
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.
Sat 9/1212:00 pm -
3 stops37h 32m
Deal found 8/2![Multiple Airlines logo]()
$173
This Southwest deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/295:30 am -
1 stop8h 25m
Deal found 8/5![Southwest logo]()
$174
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 10/125:40 pm -
1 stop9h 30m
Deal found 8/4![Southwest logo]()
$174
This Southwest deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/204:20 pm -
1 stop9h 50m
Deal found 8/5![Southwest logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:27 pm -
2 stops32h 22m
Deal found 8/5![Breeze Airways logo]()
$175
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.
Sun 8/2310:57 am -
1 stop10h 15m
Deal found 8/1![Frontier logo]()
$175
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/84:58 pm -
1 stop10h 01m
Deal found 8/1![JetBlue logo]()
$177
Find flight deals from Islip to California
Keep the following information in mind while searching for Islip to California flight deals. Data was last updated August 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $228 (Frontier) |
One-way from | $120 (Expedia) |
Popular in | June |
Cheapest in | January |
Average price | $374 |
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to California 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 5, 2026.
Use the filters below to find and compare flights from Islip to California that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
IslipLas Vegas
ISP Islip Long Island - LAS Las Vegas Harry Reid Intl
ISPLAS
Islip Long Island
Sat 10/17
4:13 pm-9:26 am
1 stop20h 13m
Las Vegas Harry Reid Intl
Sat 10/24
10:12 pm-9:33 am
1 stop8h 21m
$319
Quickest round-trip
IslipSan Diego
ISP Islip Long Island - SAN San Diego
ISPSAN
Islip Long Island
Wed 11/11
4:05 pm-8:55 pm
1 stop7h 50m
San Diego
Wed 11/18
6:35 am-4:15 pm
1 stop6h 40m
$347
IslipLos Angeles
ISP Islip Long Island - LAX Los Angeles
ISPLAX
Islip Long Island
Thu 9/24
4:05 pm-10:45 pm
1 stop9h 40m
Los Angeles
Mon 9/28
10:35 pm-10:15 am
1 stop8h 40m
$347
IslipSan Diego
ISP Islip Long Island - SAN San Diego
ISPSAN
Islip Long Island
Wed 8/26
3:20 pm-10:35 pm
2 stops10h 15m
San Diego
Mon 8/31
10:40 pm-10:15 am
1 stop8h 35m
$352
IslipSan Diego
ISP Islip Long Island - SAN San Diego
ISPSAN
Islip Long Island
Thu 8/27
4:05 pm-9:55 pm
2 stops8h 50m
San Diego
Mon 8/31
10:40 pm-12:10 pm
2 stops10h 30m
$357
IslipLos Angeles
ISP Islip Long Island - LAX Los Angeles
ISPLAX
Islip Long Island
Thu 10/15
5:40 pm-1:25 am
2 stops10h 45m
Los Angeles
Mon 10/19
11:05 pm-12:10 pm
2 stops10h 05m
$357
IslipLos Angeles
ISP Islip Long Island - LAX Los Angeles
ISPLAX
Islip Long Island
Thu 10/22
5:40 pm-1:25 am
2 stops10h 45m
Los Angeles
Mon 10/26
11:05 pm-12:10 pm
2 stops10h 05m
$357
IslipLos Angeles
ISP Islip Long Island - LAX Los Angeles
ISPLAX
Islip Long Island
Thu 8/27
4:58 pm-11:59 pm
1 stop10h 01m
Los Angeles
Tue 9/1
8:50 am-9:49 pm
1 stop9h 59m
$363
IslipLas Vegas
ISP Islip Long Island - LAS Las Vegas Harry Reid Intl
ISPLAS
Islip Long Island
Thu 8/20
10:57 am-9:44 pm
1 stop13h 47m
Las Vegas Harry Reid Intl
Wed 8/26
9:41 pm-9:53 am
1 stop9h 12m
$365
IslipLas Vegas
ISP Islip Long Island - LAS Las Vegas Harry Reid Intl
ISPLAS
Islip Long Island
Wed 8/26
10:57 am-9:44 pm
1 stop13h 47m
Las Vegas Harry Reid Intl
Fri 8/28
9:41 pm-9:53 am
1 stop9h 12m
$366
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Islip to California
Have a flexible travel schedule? Discover the best time to fly to California from Islip with our price prediction graph.
ISP-SFO
ISP-LAX
ISP-ONT
ISP-SAN
ISP-LAS
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 California
ISP-USCA
ISP-SFO
ISP-LAX
ISP-ONT
ISP-SAN
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing California
Get insights into the airlines that provide service to California. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to California. Reviews last updated August 5, 2026.
Read through reviews of airlines operating flights from Islip to California, such as Southwest. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
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Alternative routes for Islip to California
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Complete your trip
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Islip and California flights
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Islip to California flights
Consider these flights traveling from Islip to California.
Top airline flying from Islip to California
Discover the top airline that operate flights from Islip to California. 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 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$323 | Average$536 | FlexibilityNo cancel fee | On-time63% |