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$192+ Cheap flights from San Jose, CA to Islip, NY (SJC - ISP)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — ISP
Apr 23 — Apr 301
Thu 4/23
Thu 4/30
1 adult, Economy
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Cheap flight deals from San Jose to Islip

Cheapest flights from San Jose to Islip
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 March 24, 2026.

This Southwest deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” 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 6/39:40 pm
SJC
-
ISP
1 stop7h 40m
Southwest
Thu 6/412:30 pm
ISP
-
SJC
2 stops10h 55m
Southwest
Deal found 3/19$470
This Southwest deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” 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 6/39:40 pm
SJC
-
ISP
1 stop7h 40m
Southwest
Mon 6/86:00 am
ISP
-
SJC
2 stops11h 05m
Southwest
Deal found 3/19$502
This Southwest deal was found by Cheapflights users on 3/20. 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 7/289:40 pm
SJC
-
ISP
1 stop7h 25m
Southwest
Sat 8/12:45 pm
ISP
-
SJC
2 stops11h 05m
Southwest
Deal found 3/20$522
This Southwest deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” 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 6/49:40 pm
SJC
-
ISP
1 stop7h 40m
Southwest
Tue 6/96:00 am
ISP
-
SJC
1 stop9h 20m
Southwest
Deal found 3/19$645
This Southwest deal was found by Cheapflights users on 3/20. 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 7/319:40 pm
SJC
-
ISP
1 stop14h 10m
Southwest
Tue 8/1810:55 am
ISP
-
SJC
1 stop10h 25m
Southwest
Deal found 3/20$707
This Southwest deal was found by Cheapflights users on 3/22. 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 7/167:40 pm
SJC
-
ISP
2 stops9h 40m
Southwest
Mon 7/2012:30 pm
ISP
-
SJC
2 stops10h 55m
Southwest
Deal found 3/22$762

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 March 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$470
(Southwest)

One-way from

$192
(Southwest)

Popular in

November

Cheapest in

February

Average price

$364
Provider with most accurate pricing for San Jose-Islip Long Island flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Jose-Islip Long Island flights.
Search Deals
From San Jose to Islip Long Island
Search Deals
One-way flight from San Jose to Islip Long Island
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($69 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 2,558,603 searches. Data last updated March 24, 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

Price

Cheapest round-trip

San JoseIslip

SJC - ISP

SJCISP

San Jose

Thu 6/4

7:40 pm-8:20 am

2 stops9h 40m

Islip Long Island

Tue 6/9

6:00 am-12:20 pm

1 stop9h 20m

$470
Quickest round-trip

San JoseIslip

SJC - ISP

SJCISP

San Jose

Wed 6/3

9:40 pm-8:20 am

1 stop7h 40m

Islip Long Island

Thu 6/4

12:30 pm-8:25 pm

2 stops10h 55m

$470

San JoseIslip

SJC - ISP

SJCISP

San Jose

Wed 6/3

7:40 pm-8:20 am

2 stops9h 40m

Islip Long Island

Mon 6/8

6:00 am-2:05 pm

2 stops11h 05m

$508

San JoseIslip

SJC - ISP

SJCISP

San Jose

Tue 7/28

7:40 pm-8:05 am

2 stops9h 25m

Islip Long Island

Sat 8/1

2:45 pm-10:50 pm

2 stops11h 05m

$527

San JoseIslip

SJC - ISP

SJCISP

San Jose

Fri 7/31

9:40 pm-2:50 pm

1 stop14h 10m

Islip Long Island

Tue 8/18

10:55 am-6:20 pm

1 stop10h 25m

$707

San JoseIslip

SJC - ISP

SJCISP

San Jose

Thu 7/16

7:40 pm-8:20 am

2 stops9h 40m

Islip Long Island

Mon 7/20

12:30 pm-8:25 pm

2 stops10h 55m

$762

San JoseIslip

SJC - ISP

SJCISP

San Jose

Sat 4/4

9:25 pm-11:05 am

2 stops10h 40m

Islip Long Island

Wed 4/8

12:30 pm-8:25 pm

2 stops10h 55m

$802
Cheapest one-way
Quickest one-way

San JoseIslip

SJC - ISP

SJCISP

San Jose

Wed 6/3

9:40 pm-8:20 am

1 stop7h 40m

$192

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/19

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.
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 San Jose to Islip

What is the cheapest month to book a flight from San Jose, California to Islip, New York?

Currently, July is the cheapest month in which you can book a flight from San Jose, California to Islip, New York (average of $119). Flying from San Jose, California to Islip, New York in June is currently the most expensive (average of $205). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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.

  • How long is the flight from San Jose, California to Islip, New York?

    There are many flights that can get you from San Jose, California to Islip, New York in 9h 40m. Fly via Southwest to get the fastest option. San Jose, California and Islip, New York are separated by a distance of 2594 mi.

  • Can I find deals for flights from San Jose to Islip that include hotel bookings?

    Yes. In addition to deals on San Jose to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Jose to Islip?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Jose to Islip.

  • Can I find deals for business class flights from San Jose to Islip?

    Yes. Cheapflights offers flight deals from San Jose to Islip by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Jose, California to Islip, New York?

    Currently, July is the cheapest month in which you can book a flight from San Jose, California to Islip, New York (average of $119). Flying from San Jose, California to Islip, New York in June is currently the most expensive (average of $205). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead

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