$178 Cheap Flights from San Jose (SJC) to Islip (ISP)

View $178 flight on Mon, Sep 29, 2025Opens in a new window

Popular airlines from Norman Y. Mineta San Jose Intl. Airport (SJC) to MacArthur Airport (ISP)

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Cheap Flights from San Jose to Islip (SJC-ISP)

Prices were available within the past 7 days and start at $178 for one-way flights and $356 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Thu, Sep 4 - Wed, Sep 10
SJC
San Jose
ISP
Islip
$356 Roundtrip, found 6 days ago
$356
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Thu, Sep 4 from San Jose to Islip, returning Wed, Sep 10, priced at $356 found 6 days ago
Southwest Airlines
Wed, Sep 3 - Tue, Sep 9
SJC
San Jose
ISP
Islip
$361 Roundtrip, found 6 days ago
$361
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Wed, Sep 3 from San Jose to Islip, returning Tue, Sep 9, priced at $361 found 6 days ago
Southwest Airlines
Wed, Sep 3 - Tue, Sep 9
SJC
San Jose
ISP
Islip
$366 Roundtrip, found 6 days ago
$366
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Wed, Sep 3 from San Jose to Islip, returning Tue, Sep 9, priced at $366 found 6 days ago
Southwest Airlines
Wed, Sep 3 - Tue, Sep 9
SJC
San Jose
ISP
Islip
$372 Roundtrip, found 6 days ago
$372
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Wed, Sep 3 from San Jose to Islip, returning Tue, Sep 9, priced at $372 found 6 days ago
Frontier Airlines
Sun, Sep 7 - Wed, Sep 10
SJC
San Jose
ISP
Islip
$381 Roundtrip, found 6 days ago
$381
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sun, Sep 7 from San Jose to Islip, returning Wed, Sep 10, priced at $381 found 6 days ago
Frontier Airlines
Thu, Sep 4 - Wed, Sep 10
SJC
San Jose
ISP
Islip
$384 Roundtrip, found 6 days ago
$384
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, Sep 4 from San Jose to Islip, returning Wed, Sep 10, priced at $384 found 6 days ago
Frontier Airlines
Sun, Sep 7 - Thu, Sep 11
SJC
San Jose
ISP
Islip
$385 Roundtrip, found 6 days ago
$385
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sun, Sep 7 from San Jose to Islip, returning Thu, Sep 11, priced at $385 found 6 days ago
Frontier Airlines
Thu, Sep 4 - Thu, Sep 11
SJC
San Jose
ISP
Islip
$389 Roundtrip, found 6 days ago
$389
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, Sep 4 from San Jose to Islip, returning Thu, Sep 11, priced at $389 found 6 days ago
Frontier Airlines
Fri, Sep 5 - Wed, Sep 10
SJC
San Jose
ISP
Islip
$391 Roundtrip, found 6 days ago
$391
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Fri, Sep 5 from San Jose to Islip, returning Wed, Sep 10, priced at $391 found 6 days ago
Frontier Airlines
Thu, Sep 4 - Wed, Sep 10
SJC
San Jose
ISP
Islip
$399 Roundtrip, found 6 days ago
$399
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, Sep 4 from San Jose to Islip, returning Wed, Sep 10, priced at $399 found 6 days ago
Flights from San Jose (SJC) to Islip (ISP)
Origin airport
Norman Y. Mineta San Jose Intl.
Destination airport
MacArthur
Airlines serving
Southwest Airlines
Roundtrip price
$356
Distance
2595 mi

San Jose to Islip Flights

The cheapest times to fly from San Jose to Islip

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Jose to Islip are during the month of September. You can find some of the cheapest flights from San Jose to Islip with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Jose to Islip

Sunday is one of the best days to book for cheap flights from San Jose to Islip: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Jose to Islip

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Jose to Islip in 2025. You can also book with separate airlines for your outbound and return journeys, from $178 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Jose to Islip flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Jose to Islip airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Norman Y. Mineta San Jose Intl. Airport (SJC) to MacArthur Airport (ISP) cost?
Discover the latest flight deals from SJC to ISP by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SJC to ISP?
The cheapest flights from SJC to ISP are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SJC to ISP?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from SJC to ISP. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Norman Y. Mineta San Jose Intl. Airport (SJC) to MacArthur Airport (ISP)?
You'll need to book a flight with a layover if you're traveling from Norman Y. Mineta San Jose Intl. Airport (SJC) to MacArthur Airport (ISP). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from SJC to ISP?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Norman Y. Mineta San Jose Intl. Airport (SJC) to MacArthur Airport (ISP)?
To avoid potential delays on the Norman Y. Mineta San Jose Intl. Airport (SJC) to MacArthur Airport (ISP) route, aim to fly before 3 PM. Later departures are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Norman Y. Mineta San Jose Intl. Airport (SJC) to MacArthur Airport (ISP) last-minute?
Waiting until right before your break to book a ticket from SJC to ISP often results in higher prices. While you may find some last-minute deals, they're not always guaranteed. Keep your travel plans flexible to maximize your chances of getting a bargain.
Is it cheaper to book a SJC to ISP flight and hotel package?
Compared with arranging flights and hotels separately, booking a SJC to ISP flight and hotel package with Expedia could lead to significant savings. What's more, having it all in one place takes the hassle out of travel planning. Simply secure your flights and select from our extensive range of stays, then customize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Norman Y. Mineta San Jose Intl. Airport (SJC) to MacArthur Airport (ISP)?
If you reserved your SJC to ISP flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

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*Available to One Key members.