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Islip

$465+ 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — ISP
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
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 January 28, 2026.

This Southwest deal was found by Cheapflights users on 1/27. 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 2/269:05 am
SJC
-
ISP
2 stops11h 25m
Southwest
Thu 3/56:00 am
ISP
-
SJC
1 stop9h 40m
Southwest
Deal found 1/27$465
This Southwest deal was found by Cheapflights users on 1/28. 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 3/258:25 am
SJC
-
ISP
2 stops11h 25m
Southwest
Mon 3/302:00 pm
ISP
-
SJC
2 stops11h 30m
Southwest
Deal found 1/28$558
This Southwest deal was found by Cheapflights users on 1/27. 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 2/129:05 am
SJC
-
ISP
2 stops11h 25m
Southwest
Mon 2/161:10 pm
ISP
-
SJC
2 stops12h 30m
Southwest
Deal found 1/27$850
This Southwest deal was found by Cheapflights users on 1/26. 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 2/107:50 am
SJC
-
ISP
2 stops11h 05m
Southwest
Sat 2/141:10 pm
ISP
-
SJC
2 stops11h 45m
Southwest
Deal found 1/26$997

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 January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$465
(Southwest)

Popular in

November

Cheapest in

February

Average price

$352
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
Highest demand for flights based on searches. 16% potential increase in price ($71 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 January 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 January 28, 2026.
Use the filters below to find and compare flights from San Jose to Islip that are best for you.

Fly from

San Jose

Fly to

Islip

Route

Depart

Return

Price

San JoseIslip

SJC - ISP

SJCISP

San Jose

Thu 2/26

9:05 am-11:30 pm

2 stops11h 25m

Islip Long Island

Thu 3/5

6:00 am-12:40 pm

1 stop9h 40m

$465

San JoseIslip

SJC - ISP

SJCISP

San Jose

Wed 3/25

8:25 am-10:50 pm

2 stops11h 25m

Islip Long Island

Mon 3/30

2:00 pm-10:30 pm

2 stops11h 30m

$558

San JoseIslip

SJC - ISP

SJCISP

San Jose

Thu 2/12

9:05 am-11:30 pm

2 stops11h 25m

Islip Long Island

Mon 2/16

1:10 pm-10:40 pm

2 stops12h 30m

$850

San JoseIslip

SJC - ISP

SJCISP

San Jose

Tue 2/10

7:50 am-9:55 pm

2 stops11h 05m

Islip Long Island

Sat 2/14

1:10 pm-9:55 pm

2 stops11h 45m

$997

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Compare providers for flights from San Jose to Islip

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Jose to Islip in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • 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, February is the cheapest month in which you can book a flight from San Jose, California to Islip, New York (average of $96). Flying from San Jose, California to Islip, New York in June is currently the most expensive (average of $203). 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 11h 25m. 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, February is the cheapest month in which you can book a flight from San Jose, California to Islip, New York (average of $96). Flying from San Jose, California to Islip, New York in June is currently the most expensive (average of $203). 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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