$184 Cheap Flights from San José (SJO) to Islip (ISP)

View $184 flight on Fri, Dec 12, 2025Opens in a new window

Popular airlines from Juan Santamaria Intl. Airport (SJO) to MacArthur Airport (ISP)

Cheap Flights from San José to Islip (SJO-ISP)

Prices were available within the past 7 days and start at $184 for one-way flights and $329 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Mon, Nov 24 - Thu, Nov 27
SJO
San José
ISP
Islip
$329 Roundtrip, found 1 day ago
$329
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Mon, Nov 24 from San José to Islip, returning Thu, Nov 27, priced at $329 found 1 day ago
JetBlue Airways
Mon, Nov 24 - Fri, Nov 28
SJO
San José
ISP
Islip
$337 Roundtrip, found 1 day ago
$337
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Mon, Nov 24 from San José to Islip, returning Fri, Nov 28, priced at $337 found 1 day ago
JetBlue Airways
Sun, Nov 23 - Thu, Nov 27
SJO
San José
ISP
Islip
$359 Roundtrip, found 1 day ago
$359
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Sun, Nov 23 from San José to Islip, returning Thu, Nov 27, priced at $359 found 1 day ago
JetBlue Airways
Sun, Nov 23 - Fri, Nov 28
SJO
San José
ISP
Islip
$365 Roundtrip, found 1 day ago
$365
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Sun, Nov 23 from San José to Islip, returning Fri, Nov 28, priced at $365 found 1 day ago
JetBlue Airways
Sat, Nov 22 - Thu, Nov 27
SJO
San José
ISP
Islip
$421 Roundtrip, found 1 day ago
$421
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Sat, Nov 22 from San José to Islip, returning Thu, Nov 27, priced at $421 found 1 day ago
JetBlue Airways
Fri, Jan 16 - Wed, Jan 21
SJO
San José
ISP
Islip
$421 Roundtrip, found 2 days ago
$421
Roundtrip
found 2 days ago
Select JetBlue Airways flight, departing Fri, Jan 16 from San José to Islip, returning Wed, Jan 21, priced at $421 found 2 days ago
JetBlue Airways
Tue, Nov 25 - Thu, Nov 27
SJO
San José
ISP
Islip
$425 Roundtrip, found 1 day ago
$425
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Tue, Nov 25 from San José to Islip, returning Thu, Nov 27, priced at $425 found 1 day ago
JetBlue Airways
Tue, Nov 25 - Fri, Nov 28
SJO
San José
ISP
Islip
$432 Roundtrip, found 1 day ago
$432
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Tue, Nov 25 from San José to Islip, returning Fri, Nov 28, priced at $432 found 1 day ago
JetBlue Airways
Mon, Nov 24 - Wed, Dec 3
SJO
San José
ISP
Islip
$440 Roundtrip, found 1 day ago
$440
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Mon, Nov 24 from San José to Islip, returning Wed, Dec 3, priced at $440 found 1 day ago
Southwest Airlines
Wed, Nov 26 - Sun, Nov 30
SJO
San José
ISP
Islip
$547 Roundtrip, found 1 day ago
$547
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Wed, Nov 26 from San José to Islip, returning Sun, Nov 30, priced at $547 found 1 day ago

Frequently asked questions

How much does a flight from Juan Santamaria Intl. Airport (SJO) to MacArthur Airport (ISP) cost?
Get a cheap one-way flight from $184 or cheap return flight from $329 from Juan Santamaria Intl. Airport (SJO) to MacArthur Airport (ISP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Juan Santamaria Intl. Airport (SJO) to MacArthur Airport (ISP)?
The cheapest month to fly from SJO to ISP is November, when demand is low. Off-peak season is generally when better flight deals are available between these airports.
What is the cheapest airline that flies from Juan Santamaria Intl. Airport (SJO) to MacArthur Airport (ISP)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest SJO to ISP flight.
How many flights per day from Juan Santamaria Intl. Airport (SJO) to MacArthur Airport (ISP)?
You'll have to catch a flight with a layover if you're traveling from Juan Santamaria Intl. Airport (SJO) 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 find the best option for your trip.
What day of the week has the most flights from SJO to ISP?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary depending on a number of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Juan Santamaria Intl. Airport (SJO) to MacArthur Airport (ISP)?
To land at MacArthur Airport (ISP) on schedule, opt for a flight that takes off from Juan Santamaria Intl. Airport (SJO) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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.
What airports do you fly into for Islip from Juan Santamaria Intl. Airport (SJO)?
If you're on a direct flight from Juan Santamaria Intl. Airport (SJO) to Islip, John F. Kennedy Intl. Airport (JFK) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Juan Santamaria Intl. Airport (SJO) to MacArthur Airport (ISP) last-minute?
Holding off until just before your trip to book a ticket from SJO to ISP generally means paying more. Although you may find some last-minute offers, they're not always guaranteed. Be flexible with your itinerary to boost your chances of snagging a bargain.
Is it cheaper to book a SJO to ISP flight and hotel package?
Securing a SJO to ISP flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Select from our extensive range of stays and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Juan Santamaria Intl. Airport (SJO) to MacArthur Airport (ISP)?
It's generally possible to reschedule or cancel your SJO to ISP flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Juan Santamaría Intl.
Destination airport
MacArthur
Airlines serving
JetBlue Airways, Southwest Airlines
Roundtrip price
$329
Distance
2233 mi

Book with confidence

San José to Islip Flights

The cheapest times to fly from San José 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 José to Islip are during the month of November. You can find some of the cheapest flights from San José to Islip with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from San José 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 José 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 José to Islip in 2025. You can also book with separate airlines for your outbound and return journeys, from $184 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 José 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 José 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.

 

San José to Islip Flights

Explore a world of travel with Expedia

*Available to One Key members.