$167+ Cheap flights from Islip, NY to San Jose (ISP - SJC)
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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SJC
Jul 21 — Jul 281
1 adult, Economy
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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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Islip to San Jose
Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to San Jose (SJC). 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 16, 2025.
Popular in | December |
|---|---|
Cheapest in | March |
Average price | $374 |
Find flight deals from Islip to San Jose
One-way flights from Islip to San JoseSearch for one-way flight options from Islip to San Jose. Find affordable one-way fares based on user searches. Data last updated July 16, 2025.
Search for one-way flight options from Islip to San Jose. Find affordable one-way fares based on user searches. Data last updated July 16, 2025.
This Southwest deal was found by Cheapflights users on 7/15. 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 10/1511:40 amISP - SJC
1 stop9h 25mSouthwest
Deal found 7/15![Southwest logo]()
$167
This Frontier deal was found by Cheapflights users on 7/15. 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.
Sun 10/128:48 pmISP - SJC
2 stops24h 11mFrontier
Deal found 7/15![Frontier logo]()
$261
This United deal was found by Cheapflights users on 7/16. 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.
Mon 7/214:33 pmISP - SJC
2 stops23h 49mMultiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$456
Cheapflights Fare Finder
Customize your flight search to find flights from Islip to San Jose 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 16, 2025.
Use the filters below to find and compare flights from Islip to San Jose that are best for you.
Fly from
Islip
Fly to
San Jose
Route
Depart
Return
Price
IslipSan Jose
ISP - SJC
ISPSJC
Islip Long Island
Wed 10/15
11:40 am-6:05 pm
1 stop9h 25m
$167
IslipSan Jose
ISP - SJC
ISPSJC
Islip Long Island
Sun 10/12
8:48 pm-5:59 pm
2 stops24h 11m
$261
IslipSan Jose
ISP - SJC
ISPSJC
Islip Long Island
Mon 7/21
4:33 pm-1:22 pm
2 stops23h 49m
$456
Best time to book a flight from Islip to San Jose
Have a flexible travel schedule? Discover the best time to fly to San Jose from Islip 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 Islip to San Jose
What is the cheapest month to book a flight from Islip, New York to San Jose?
Currently, September is the cheapest month in which you can book a flight from Islip, New York to San Jose (average of $254). Flying from Islip, New York to San Jose in June is currently the most expensive (average of $359). 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 San Jose
Get insights into the airlines that provide service to San Jose. 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 San Jose. Reviews last updated July 16, 2025.
See what other customers who have flown with Southwest and Frontier from Islip to San Jose have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentMerlyn,Feb 2025
LAX - SMF