$173+ Cheap flights from Islip, NY (ISP) to California
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — LAX
Oct 25 — Nov 11
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 September 25, 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 September 25, 2026.
This Southwest deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 -
1 stop9h 35m
Thu 10/291:05 pm -
1 stop7h 35m
Deal found 9/22![Southwest logo]()
$385
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/214:20 pm -
1 stop9h 55m
Wed 10/285:45 am -
1 stop7h 00m
Deal found 9/23![Southwest logo]()
$385
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/195:40 pm -
1 stop9h 35m
Mon 10/2610:40 pm -
2 stops10h 30m
Deal found 9/23![Southwest logo]()
$390
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/214:20 pm -
1 stop9h 55m
Mon 10/2611:05 pm -
2 stops10h 05m
Deal found 9/23![Southwest logo]()
$390
This Southwest deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 10/293:10 pm -
2 stops10h 35m
Mon 11/210:45 am -
2 stops9h 45m
Deal found 9/21![Southwest logo]()
$395
This Southwest deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 -
2 stops10h 00m
Mon 10/2611:05 pm -
2 stops10h 05m
Deal found 9/24![Southwest logo]()
$419
This Southwest deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 stops9h 35m
Mon 10/269:50 pm -
1 stop11h 20m
Deal found 9/24![Southwest logo]()
$420
This Southwest deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/44:05 pm -
1 stop8h 10m
Tue 12/111:10 pm -
2 stops9h 35m
Deal found 9/24![Southwest logo]()
$436
This Southwest deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 11/1412:45 pm -
1 stop10h 40m
Sat 11/2110:40 pm -
2 stops10h 05m
Deal found 9/21![Southwest logo]()
$446
This Southwest deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 11/106:05 am -
2 stops10h 55m
Sat 11/147:40 pm -
2 stops13h 05m
Deal found 9/22![Southwest logo]()
$447
This Southwest deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 11/512:25 pm -
2 stops13h 20m
Mon 11/910:10 am -
2 stops10h 25m
Deal found 9/24![Southwest logo]()
$461
This Southwest deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 11/612:25 pm -
2 stops13h 00m
Fri 11/131:40 pm -
1 stop6h 55m
Deal found 9/22![Southwest logo]()
$478
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 September 25, 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 September 25, 2026.
This Southwest deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 -
1 stop9h 35m
Thu 10/291:05 pm -
1 stop7h 35m
Deal found 9/22![Southwest logo]()
$385
This Frontier deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/196:55 pm -
2 stops19h 10m
Thu 10/227:13 pm -
2 stops19h 47m
Deal found 9/22![Frontier logo]()
$573
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/195:40 pm -
1 stop9h 35m
Mon 10/269:50 pm -
1 stop11h 20m
Deal found 9/23![Southwest logo]()
$390
This Southwest deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 10/295:40 pm -
1 stop9h 35m
Mon 11/210:35 pm -
1 stop13h 55m
Deal found 9/21![Southwest logo]()
$390
This Southwest deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/214:20 pm -
1 stop9h 55m
Mon 10/2610:20 pm -
1 stop11h 50m
Deal found 9/22![Southwest logo]()
$390
This United deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/2112:30 pm -
2 stops26h 48m
Wed 10/285:00 am -
2 stops27h 09m
Deal found 9/23![Multiple Airlines logo]()
$1,016
This KAYAK deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 12/1010:57 am -
2 stops37h 33m
Sun 12/137:45 am -
3 stops27h 37m
Deal found 9/20![Breeze Airways logo]()
$1,062
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/219:40 am -
2 stops10h 35m
Wed 10/2810:20 pm -
2 stops10h 25m
Deal found 9/23![Southwest logo]()
$407
This Southwest deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 stops9h 35m
Mon 10/2611:05 pm -
2 stops10h 05m
Deal found 9/22![Southwest logo]()
$429
This Mytrip deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:54 pm -
2 stops31h 57m
Sun 11/1511:52 am -
2 stops27h 04m
Deal found 9/21![Frontier logo]()
$670
This Southwest deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/44:05 pm -
1 stop8h 10m
Tue 12/111:10 pm -
2 stops9h 35m
Deal found 9/24![Southwest logo]()
$436
This Frontier deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 11/234:40 pm -
2 stops16h 40m
Wed 12/22:47 pm -
2 stops20h 01m
Deal found 9/24![Frontier logo]()
$672
This Southwest deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 11/106:05 am -
2 stops10h 55m
Sat 11/147:40 pm -
2 stops13h 05m
Deal found 9/22![Southwest logo]()
$447
This Southwest deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 11/146:00 am -
2 stops11h 10m
Sat 11/2110:40 pm -
2 stops10h 05m
Deal found 9/21![Southwest logo]()
$451
This Booking.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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.
Sat 11/214:43 pm -
2 stops16h 37m
Sun 11/226:08 pm -
2 stops42h 37m
Deal found 9/23![Frontier logo]()
$748
This Southwest deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 11/125:40 pm -
2 stops9h 15m
Sun 11/1511:10 pm -
2 stops9h 35m
Deal found 9/22![Southwest logo]()
$451
This Frontier deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 1/811:59 am -
2 stops22h 08m
Sun 1/106:27 pm -
2 stops13h 37m
Deal found 9/24![Frontier logo]()
$757
This Southwest deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 11/512:25 pm -
2 stops13h 20m
Mon 11/910:10 am -
2 stops10h 25m
Deal found 9/24![Southwest logo]()
$461
This United deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/67:31 am -
2 stops18h 18m
Tue 10/201:22 pm -
2 stops18h 47m
Deal found 9/22![Multiple Airlines logo]()
$1,105
This KAYAK deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 10/1510:57 am -
2 stops37h 31m
Sun 10/187:45 am -
3 stops27h 37m
Deal found 9/20![Breeze Airways logo]()
$1,202
This Southwest deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 11/612:25 pm -
2 stops13h 00m
Fri 11/131:40 pm -
1 stop6h 55m
Deal found 9/22![Southwest logo]()
$478
This KAYAK deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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.
Fri 11/139:33 pm -
3 stops25h 57m
Wed 11/187:30 am -
3 stops31h 03m
Deal found 9/21![Breeze Airways logo]()
$1,214
This Southwest deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 11/85:40 pm -
1 stop10h 00m
Sat 11/149:55 pm -
1 stop10h 50m
Deal found 9/22![Southwest logo]()
$480
This Southwest deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 11/65:40 pm -
1 stop10h 00m
Sun 11/1511:10 pm -
2 stops9h 35m
Deal found 9/21![Southwest logo]()
$480
This Mytrip deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:25 pm -
2 stops19h 04m
Sun 10/111:38 pm -
2 stops25h 22m
Deal found 9/24![Frontier logo]()
$1,086
This Booking.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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.
Tue 11/101:38 pm -
3 stops33h 52m
Sat 11/147:30 am -
3 stops31h 03m
Deal found 9/22![Breeze Airways logo]()
$1,380
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 11/2112:50 pm -
1 stop9h 15m
Sun 11/2210:15 pm -
2 stops14h 20m
Deal found 9/23![Southwest logo]()
$486
This Frontier deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 11/214:43 pm -
2 stops16h 37m
Sun 1/34:46 pm -
2 stops13h 15m
Deal found 9/21![Frontier logo]()
$1,109
This KAYAK deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/1510:57 am -
2 stops37h 31m
Sat 10/177:30 am -
3 stops32h 21m
Deal found 9/22![Breeze Airways logo]()
$1,409
This Southwest deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 11/85:35 am -
1 stop11h 10m
Sun 11/159:25 pm -
1 stop11h 20m
Deal found 9/24![Southwest logo]()
$502
Last-minute flights from Islip to CaliforniaDiscover last-minute flight deals from Islip to California. Data last updated September 25, 2026 and is based on user searches.
Discover last-minute flight deals from Islip to California. Data last updated September 25, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/64:20 pm -
1 stop9h 55m
Tue 10/205:45 am -
1 stop7h 00m
Deal found 9/22![Southwest logo]()
$501
This Southwest deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 10/612:50 pm -
2 stops11h 35m
Tue 10/208:35 am -
2 stops8h 25m
Deal found 9/20![Southwest logo]()
$567
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/195:40 pm -
1 stop9h 35m
Mon 10/269:50 pm -
1 stop11h 20m
Deal found 9/23![Southwest logo]()
$390
This Frontier deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/196:55 pm -
2 stops19h 10m
Fri 10/237:13 pm -
2 stops19h 17m
Deal found 9/22![Frontier logo]()
$551
This Frontier deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/196:55 pm -
2 stops19h 10m
Thu 10/227:13 pm -
2 stops19h 47m
Deal found 9/22![Frontier logo]()
$573
This Southwest deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 -
2 stops10h 00m
Mon 10/2611:05 pm -
2 stops10h 05m
Deal found 9/24![Southwest logo]()
$419
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/214:20 pm -
1 stop9h 55m
Wed 10/285:45 am -
1 stop7h 00m
Deal found 9/23![Southwest logo]()
$385
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/214:20 pm -
1 stop9h 55m
Mon 10/2611:05 pm -
2 stops10h 05m
Deal found 9/23![Southwest logo]()
$390
This Southwest deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 -
1 stop9h 35m
Thu 10/291:05 pm -
1 stop7h 35m
Deal found 9/22![Southwest logo]()
$385
This Southwest deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” 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 stops9h 35m
Mon 10/269:50 pm -
1 stop11h 20m
Deal found 9/24![Southwest logo]()
$420
This Southwest deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 10/223:10 pm -
2 stops11h 45m
Mon 10/269:40 pm -
1 stop11h 30m
Deal found 9/20![Southwest logo]()
$514
This Southwest deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 10/293:10 pm -
2 stops10h 35m
Mon 11/210:45 am -
2 stops9h 45m
Deal found 9/21![Southwest logo]()
$395
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 September 25, 2026.
Search for one-way flight options from Islip to California. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” 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 10/201:38 pm -
3 stops37h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$173
This Southwest deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 10/206:05 am -
1 stop9h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Southwest logo]()
$193
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 10/214:20 pm -
1 stop9h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Southwest logo]()
$193
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 1/135:45 am -
2 stops10h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Southwest logo]()
$198
This Mytrip deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:55 pm -
2 stops18h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 10/201:38 pm -
3 stops29h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$203
This Southwest deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 10/209:40 am -
2 stops10h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Southwest logo]()
$210
This Southwest deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 10/233:10 pm -
2 stops11h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Southwest logo]()
$210
This Frontier deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” 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 12/219:56 am -
1 stop14h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Frontier logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2112:00 pm -
3 stops22h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” 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 10/61:38 pm -
3 stops25h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Breeze Airways logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” 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 9/3012:00 pm -
3 stops49h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$235
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 September 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $385 (Southwest) |
One-way from | $173 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $433 |
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 7,457,451 searches. Data last updated September 25, 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
Quickest round-trip
IslipSan Diego
ISP Islip Long Island - SAN San Diego
ISPSAN
Islip Long Island
Wed 1/13
3:50 pm-8:45 pm
1 stop7h 55m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$193
IslipSan Diego
ISP Islip Long Island - SAN San Diego
ISPSAN
Islip Long Island
Tue 10/20
6:05 am-12:45 pm
1 stop9h 40m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$193
IslipLos Angeles
ISP Islip Long Island - LAX Los Angeles
ISPLAX
Islip Long Island
Wed 10/21
4:20 pm-11:15 pm
1 stop9h 55m
Los Angeles
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$193
IslipLos Angeles
ISP Islip Long Island - LAX Los Angeles
ISPLAX
Islip Long Island
Mon 10/26
5:40 pm-1:30 am
2 stops10h 50m
Los Angeles
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$198
IslipLos Angeles
ISP Islip Long Island - LAX Los Angeles
ISPLAX
Islip Long Island
Tue 10/20
12:50 pm-8:55 pm
2 stops11h 05m
Los Angeles
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$198
IslipSanta Ana
ISP Islip Long Island - SNA Santa Ana J. Wayne/Orange Cnty
ISPSNA
Islip Long Island
Tue 10/20
9:40 am-5:00 pm
2 stops10h 20m
Santa Ana J. Wayne/Orange Cnty
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$210
IslipSan Francisco
ISP Islip Long Island - SFO San Francisco
ISPSFO
Islip Long Island
Fri 10/23
3:10 pm-11:15 pm
2 stops11h 05m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$210
IslipSanta Ana
ISP Islip Long Island - SNA Santa Ana J. Wayne/Orange Cnty
ISPSNA
Islip Long Island
Wed 9/30
12:00 pm-10:00 am
3 stops49h 00m
Santa Ana J. Wayne/Orange Cnty
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$235
IslipSanta Ana
ISP Islip Long Island - SNA Santa Ana J. Wayne/Orange Cnty
ISPSNA
Islip Long Island
Wed 9/30
5:43 pm-10:00 am
2 stops43h 17m
Santa Ana J. Wayne/Orange Cnty
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$243
IslipOntario
ISP Islip Long Island - ONT Ontario
ISPONT
Islip Long Island
Sun 10/25
5:40 am-2:05 pm
2 stops11h 25m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$254
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-SAN
ISP-SFO
ISP-LAX
ISP-ONT
ISP-SNA
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-SAN
ISP-SFO
ISP-LAX
ISP-ONT
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 September 25, 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.
Food
7.0
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Crew
8.6
Boarding
8.1
Overall
8.0
Entertainment
7.5
Comfort
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
Browse other Islip and California flight options. Last updated on September 25, 2026.
Popular flight searches
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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 7,457,451 searches. Data last updated September 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$310 | Average$500 | FlexibilityNo cancel fee | On-time63% |