$399+ Cheap flights from San Jose, CA to Islip, NY (SJC - 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — ISP
Oct 5 — Oct 121
Round-trip
1 adult, Economy
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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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One-way
Cheapest flights from San Jose to IslipExplore the most affordable flight options available from San Jose to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 5, 2026.
Explore the most affordable flight options available from San Jose to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 5, 2026.
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.
Fri 10/1611:00 pm -
2 stops9h 55m
Fri 10/233:10 pm -
2 stops11h 45m
Deal found 9/1![Southwest logo]()
$399
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.
Wed 12/2311:00 pm -
2 stops9h 45m
Mon 12/2812:10 pm -
2 stops13h 25m
Deal found 9/1![Southwest logo]()
$968
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.
Wed 12/2311:00 pm -
2 stops9h 45m
Sun 12/276:05 am -
1 stop10h 15m
Deal found 9/1![Southwest logo]()
$1,071
Best flights from San Jose to IslipDiscover carefully curated flight deals from San Jose to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 5, 2026.
Discover carefully curated flight deals from San Jose to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 5, 2026.
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.
Fri 10/169:40 pm -
1 stop11h 15m
Fri 10/236:00 am -
1 stop11h 25m
Deal found 9/1![Southwest logo]()
$547
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.
Wed 12/2311:00 pm -
2 stops9h 45m
Sun 12/276:05 am -
1 stop10h 15m
Deal found 9/1![Southwest logo]()
$1,071
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.
Wed 12/239:50 pm -
1 stop10h 55m
Mon 12/2812:10 pm -
2 stops13h 25m
Deal found 9/1![Southwest logo]()
$1,135
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.
Tue 12/2210:30 am -
2 stops10h 15m
Sun 12/276:05 am -
1 stop10h 15m
Deal found 9/1![Southwest logo]()
$1,500
Last-minute flights from San Jose to IslipDiscover last-minute flight deals from San Jose to Islip. Data last updated September 5, 2026 and is based on user searches.
Discover last-minute flight deals from San Jose to Islip. Data last updated September 5, 2026 and is based on user searches.
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.
Fri 9/48:40 am -
2 stops10h 30m
Mon 9/76:10 am -
1 stop9h 50m
Deal found 9/2![Southwest logo]()
$1,406
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.
Fri 9/48:14 pm -
2 stops19h 00m
Mon 9/77:31 am -
2 stops14h 14m
Deal found 9/2![Multiple Airlines logo]()
$1,571
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.
Fri 10/1611:00 pm -
2 stops9h 55m
Fri 10/233:10 pm -
2 stops11h 45m
Deal found 9/1![Southwest logo]()
$399
One-way flights from San Jose to IslipSearch for one-way flight options from San Jose to Islip. Find affordable one-way fares based on user searches. Data last updated September 5, 2026.
Search for one-way flight options from San Jose to Islip. Find affordable one-way fares based on user searches. Data last updated September 5, 2026.
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:15 pm -
2 stops14h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Multiple Airlines logo]()
$951
Find flight deals from San Jose to Islip
Discover tips and strategies to find the most affordable flight options for your journey from San Jose (SJC) to Islip (ISP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $399 (Southwest) |
Popular in | July |
Cheapest in | February |
Average price | $353 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Jose 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 5, 2026.
Use the filters below to find and compare flights from San Jose to Islip that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San JoseIslip
SJC San Jose - ISP Islip Long Island
SJCISP
San Jose
Fri 10/16
9:40 pm-11:55 am
1 stop11h 15m
Islip Long Island
Fri 10/23
6:00 am-2:25 pm
1 stop11h 25m
$547
Quickest round-trip
San JoseIslip
SJC San Jose - ISP Islip Long Island
SJCISP
San Jose
Tue 10/20
5:15 pm-11:05 am
2 stops14h 50m
Islip Long Island
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$951
San JoseIslip
SJC San Jose - ISP Islip Long Island
SJCISP
San Jose
Wed 12/23
11:00 pm-11:45 am
2 stops9h 45m
Islip Long Island
Sun 12/27
6:05 am-1:20 pm
1 stop10h 15m
$1,071
San JoseIslip
SJC San Jose - ISP Islip Long Island
SJCISP
San Jose
Wed 12/23
9:50 pm-11:45 am
1 stop10h 55m
Islip Long Island
Mon 12/28
12:10 pm-10:35 pm
2 stops13h 25m
$1,135
San JoseIslip
SJC San Jose - ISP Islip Long Island
SJCISP
San Jose
Tue 12/22
10:30 am-11:45 pm
2 stops10h 15m
Islip Long Island
Sun 12/27
6:05 am-1:20 pm
1 stop10h 15m
$1,500
Sorted by cheapest first
- Most accurate provider: When it comes to deals on San Jose, California-Islip, New York flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Jose, California-Islip, New York flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Jose, California-Islip, New York flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Jose, California-Islip, New York flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Jose, California-Islip, New York flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Jose to Islip
Have a flexible travel schedule? Discover the best time to fly to Islip from San Jose with our price prediction graph.
SJC-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.
Related info for your journey
Find useful and relevant information for your journey from San Jose 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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