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Islip

$473+ Cheap flights from San Jose 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — ISP
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheap 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 July 29, 2025.

Round-trip from

$473
(Southwest)

Popular in

December

Cheapest in

September

Average price

$362
From San Jose to Islip Long Island
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
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Find 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 July 29, 2025.

This Southwest deal was found by Cheapflights users on 7/27. 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.
Tue 8/268:10 amSJC - ISP
2 stops10h 55mSouthwest
Sun 8/316:25 amISP - SJC
1 stop13h 15mSouthwest
Deal found 7/27$473
This Trip.com deal was found by Cheapflights users on 7/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/104:22 pmSJC - ISP
2 stops24h 30mMultiple Airlines
Wed 8/138:37 pmISP - SJC
2 stops29h 21mMultiple Airlines
Deal found 7/28$521

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 July 29, 2025.
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

Tue 8/26

8:10 am-10:05 pm

2 stops10h 55m

Islip Long Island

Sun 8/31

6:25 am-4:40 pm

1 stop13h 15m

$473

San JoseIslip

SJC - ISP

SJCISP

San Jose

Sun 8/10

4:22 pm-7:52 pm

2 stops24h 30m

Islip Long Island

Wed 8/13

8:37 pm-10:58 pm

2 stops29h 21m

$521

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

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 to Islip, New York?

Currently, January is the cheapest month in which you can book a flight from San Jose to Islip, New York (average of $108). Flying from San Jose to Islip, New York in November is currently the most expensive (average of $213). 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.

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. 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 Islip. Reviews last updated July 29, 2025.
Get a feel of what it's like to fly with Southwest from San Jose to Islip by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.0
Very good
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Crew

8.6

Overall

8.0

Food

7.0

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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.

  • 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 to Islip, New York?

    Currently, January is the cheapest month in which you can book a flight from San Jose to Islip, New York (average of $108). Flying from San Jose to Islip, New York in November is currently the most expensive (average of $213). 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
Southampton

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