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San José

$265+ Cheap flights from Islip, NY (ISP) to San José (SJO)

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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SJO
Feb 23 — Mar 21
Mon 2/23
Mon 3/2
1 adult, Economy
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Cheap flight deals from Islip to San José

Cheapest flights from Islip to San José
Explore the most affordable flight options available from Islip to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 24, 2026.

This JetBlue deal was found by Cheapflights users on 1/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/288:22 pm
ISP
-
SJO
1 stop14h 30m
JetBlue
Wed 4/11:00 pm
SJO
-
ISP
1 stop7h 35m
JetBlue
Deal found 1/22$563
This JetBlue deal was found by Cheapflights users on 1/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/298:56 pm
ISP
-
SJO
1 stop13h 56m
JetBlue
Wed 4/11:00 pm
SJO
-
ISP
1 stop7h 35m
JetBlue
Deal found 1/22$589
This JetBlue deal was found by Cheapflights users on 1/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/278:22 pm
ISP
-
SJO
1 stop13h 31m
JetBlue
Wed 4/11:00 pm
SJO
-
ISP
1 stop7h 35m
JetBlue
Deal found 1/22$621
This JetBlue deal was found by Cheapflights users on 1/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/268:22 pm
ISP
-
SJO
1 stop13h 31m
JetBlue
Wed 4/11:00 pm
SJO
-
ISP
1 stop7h 35m
JetBlue
Deal found 1/22$642
This Ovago deal was found by Cheapflights users on 1/23. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/219:59 am
ISP
-
SJO
2 stops13h 39m
Multiple Airlines
Sat 2/281:10 pm
SJO
-
ISP
1 stop18h 37m
Multiple Airlines
Deal found 1/23$719
This Ovago deal was found by Cheapflights users on 1/23. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1012:25 pm
ISP
-
SJO
1 stop25h 35m
JetBlue
Wed 2/181:15 pm
SJO
-
ISP
1 stop18h 24m
JetBlue
Deal found 1/23$771
This JetBlue deal was found by Cheapflights users on 1/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/138:25 pm
ISP
-
SJO
1 stop13h 28m
JetBlue
Thu 3/198:59 am
SJO
-
ISP
1 stop12h 47m
JetBlue
Deal found 1/22$792
This Ovago deal was found by Cheapflights users on 1/23. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/211:28 pm
ISP
-
SJO
1 stop24h 32m
JetBlue
Sat 2/281:10 pm
SJO
-
ISP
1 stop18h 37m
JetBlue
Deal found 1/23$796
This JetBlue deal was found by Cheapflights users on 1/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/288:22 pm
ISP
-
SJO
1 stop14h 30m
JetBlue
Mon 4/61:00 pm
SJO
-
ISP
1 stop7h 46m
JetBlue
Deal found 1/22$814
This JetBlue deal was found by Cheapflights users on 1/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/298:56 pm
ISP
-
SJO
1 stop13h 56m
JetBlue
Mon 4/61:00 pm
SJO
-
ISP
1 stop7h 46m
JetBlue
Deal found 1/22$825
This JetBlue deal was found by Cheapflights users on 1/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/278:22 pm
ISP
-
SJO
1 stop13h 31m
JetBlue
Mon 4/61:00 pm
SJO
-
ISP
1 stop7h 46m
JetBlue
Deal found 1/22$872
This JetBlue deal was found by Cheapflights users on 1/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/2610:00 am
ISP
-
SJO
1 stop7h 23m
JetBlue
Fri 1/305:30 pm
SJO
-
ISP
1 stop14h 22m
JetBlue
Deal found 1/22$875

Find flight deals from Islip to San José

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to San José (SJO). 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 January 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$563
(JetBlue)

One-way from

$265
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$430
Provider with most accurate pricing for Islip Long Island-San José Juan Santamaria Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Islip Long Island-San José Juan Santamaria Intl flights.
Search Deals
From Islip Long Island to San José Juan Santamaria Intl
Search Deals
One-way flight from Islip Long Island to San José Juan Santamaria Intl
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to San José 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 January 24, 2026.
Use the filters below to find and compare flights from Islip to San José that are best for you.

Fly from

Islip

Fly to

San José

Route

Depart

Return

Price

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sat 3/28

8:22 pm-8:52 am

1 stop14h 30m

San José Juan Santamaria Intl

Wed 4/1

1:00 pm-10:35 pm

1 stop7h 35m

$563

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sun 3/29

8:56 pm-8:52 am

1 stop13h 56m

San José Juan Santamaria Intl

Wed 4/1

1:00 pm-10:35 pm

1 stop7h 35m

$589

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Fri 3/27

8:22 pm-7:53 am

1 stop13h 31m

San José Juan Santamaria Intl

Wed 4/1

1:00 pm-10:35 pm

1 stop7h 35m

$621

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Thu 3/26

8:22 pm-7:53 am

1 stop13h 31m

San José Juan Santamaria Intl

Wed 4/1

1:00 pm-10:35 pm

1 stop7h 35m

$642

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sat 2/21

9:59 am-10:38 pm

2 stops13h 39m

San José Juan Santamaria Intl

Sat 2/28

1:10 pm-8:47 am

1 stop18h 37m

$719

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Tue 2/10

12:25 pm-1:00 pm

1 stop25h 35m

San José Juan Santamaria Intl

Wed 2/18

1:15 pm-8:39 am

1 stop18h 24m

$771

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Fri 3/13

8:25 pm-7:53 am

1 stop13h 28m

San José Juan Santamaria Intl

Thu 3/19

8:59 am-11:46 pm

1 stop12h 47m

$792

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sun 3/29

8:56 pm-8:52 am

1 stop13h 56m

San José Juan Santamaria Intl

Mon 4/6

1:00 pm-10:46 pm

1 stop7h 46m

$825

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Fri 3/27

8:22 pm-7:53 am

1 stop13h 31m

San José Juan Santamaria Intl

Mon 4/6

1:00 pm-10:46 pm

1 stop7h 46m

$872

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Thu 3/26

8:22 pm-7:53 am

1 stop13h 31m

San José Juan Santamaria Intl

Mon 4/6

1:00 pm-10:46 pm

1 stop7h 46m

$893

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

Showing 1-10 of 14 results
1
2
  • Most accurate provider: When it comes to deals on Islip, New York-San José flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-San José flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-San José flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-San José flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-San José flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Islip to San José

Have a flexible travel schedule? Discover the best time to fly to San José 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 José

What is the cheapest month to book a flight from Islip, New York to San José?

Currently, October is the cheapest month in which you can book a flight from Islip, New York to San José (average of $177). Flying from Islip, New York to San José in June is currently the most expensive (average of $272). 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.

Related info for your journey

Find useful and relevant information for your journey from Islip to San José. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Islip, New York to San José?

    Departing from Islip, New York to San José will take you 14h 30m. The distance between Islip, New York and San José is about 2232 mi.

  • Can I find deals for flights from Islip to San José that include hotel bookings?

    Yes. In addition to deals on Islip to San José flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to San José?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to San José.

  • Can I find deals for business class flights from Islip to San José?

    Yes. Cheapflights offers flight deals from Islip to San José 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 Islip, New York to San José?

    Currently, October is the cheapest month in which you can book a flight from Islip, New York to San José (average of $177). Flying from Islip, New York to San José in June is currently the most expensive (average of $272). 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 San José?

Book flights to San José if you plan to visit one of these locations
Alajuela
Monteverde
Jacó
Heredia
Dominical
Manuel Antonio

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