$304+ 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 6/25. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Islip to San Jose with Cheapflights
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 June 12, 2025.
Popular in | December |
|---|---|
Cheapest in | March |
Average price | $416 |
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 June 12, 2025.
Search for one-way flight options from Islip to San Jose. Find affordable one-way fares based on user searches. Data last updated June 12, 2025.
This Mytrip deal was found by Cheapflights users on 6/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 6/10. 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.
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 June 12, 2025.
Use the filters below to find and compare flights from Islip to San Jose that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
IslipSan Jose
ISP - SJC
ISPSJC
Islip Long Island
Wed 6/25
2:55 pm-10:06 am
3 stops46h 11m
IslipSan Jose
ISP - SJC
ISPSJC
Islip Long Island
Thu 6/19
12:05 pm-5:35 pm
1 stop8h 30m
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.
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 $255). Flying from Islip, New York to San Jose in June is currently the most expensive (average of $344). 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.
Rainfall in San Jose by month
Plan your trip to San Jose by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in San Jose ranges from 0.0 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. July is typically the driest time to visit San Jose when rainfall is around 0.0 in.
Temperature in San Jose by month
Plan your trip to San Jose by taking into account the average temperature totals by month.
If weather is an important factor for your trip to San Jose, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 50.0 F).
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 June 12, 2025.
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Merlyn,Feb 2025
LAX - SMF
Food
Entertainment
Boarding
Overall
Comfort
Crew
Reviews
Merlyn,Feb 2025
LAX - SMF