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Islip

$256+ Cheap flights from San José (SJO) to Islip, NY (ISP)

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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — ISP
Mar 8 — Mar 151
Sun 3/8
Sun 3/15
1 adult, Economy
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Cheap flight deals from San José to Islip

Cheapest flights from San José to Islip
Explore the most affordable flight options available from San José to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 6, 2026.

This JetBlue deal was found by Cheapflights users on 2/5. 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 2/65:30 pm
SJO
-
ISP
1 stop14h 22m
JetBlue
Mon 2/99:42 am
ISP
-
SJO
1 stop7h 41m
JetBlue
Deal found 2/5$747
This Kiwi.com deal was found by Cheapflights users on 2/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/2111:38 am
SJO
-
ISP
1 stop26h 11m
Multiple Airlines
Sat 3/2811:50 am
ISP
-
SJO
2 stops24h 52m
Multiple Airlines
Deal found 2/4$854
This Southwest deal was found by Cheapflights users on 2/4. 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.
Sat 3/212:05 pm
SJO
-
ISP
1 stop7h 30m
Southwest
Sat 3/285:00 am
ISP
-
SJO
1 stop7h 25m
Southwest
Deal found 2/4$913

Find flight deals from San José to Islip

Discover tips and strategies to find the most affordable flight options for your journey from San José (SJO) to Islip (ISP). 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 February 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$854
(Kiwi.com)

One-way from

$256
(Kiwi.com)

Popular in

April

Cheapest in

October

Average price

$303
Provider with most accurate pricing for San José Juan Santamaria Intl-Islip Long Island flight deals.
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Provider most trusted by Cheapflights users for San José Juan Santamaria Intl-Islip Long Island flights.
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From San José Juan Santamaria Intl to Islip Long Island
Search Deals
One-way flight from San José Juan Santamaria Intl to Islip Long Island
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from San José to Islip 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 February 6, 2026.
Use the filters below to find and compare flights from San José to Islip that are best for you.

Fly from

San José

Fly to

Islip

Route

Depart

Return

Price

San JoséIslip

SJO - ISP

SJOISP

San José Juan Santamaria Intl

Sat 3/21

11:38 am-3:49 pm

1 stop26h 11m

Islip Long Island

Sat 3/28

11:50 am-10:42 am

2 stops24h 52m

$854

San JoséIslip

SJO - ISP

SJOISP

San José Juan Santamaria Intl

Sat 3/21

2:05 pm-11:35 pm

1 stop7h 30m

Islip Long Island

Sat 3/28

5:00 am-10:25 am

1 stop7h 25m

$913

San JoséIslip

SJO - ISP

SJOISP

San José Juan Santamaria Intl

Mon 3/16

12:19 pm-11:10 am

2 stops44h 51m

$256

San JoséIslip

SJO - ISP

SJOISP

San José Juan Santamaria Intl

Mon 3/16

12:15 pm-8:55 am

1 stop18h 40m

$296

San JoséIslip

SJO - ISP

SJOISP

San José Juan Santamaria Intl

Wed 3/25

8:59 am-7:27 pm

1 stop8h 28m

$416

San JoséIslip

SJO - ISP

SJOISP

San José Juan Santamaria Intl

Sat 2/14

2:05 pm-10:02 am

1 stop18h 57m

$567

San JoséIslip

SJO - ISP

SJOISP

San José Juan Santamaria Intl

Sun 2/15

1:15 am-6:44 pm

3 stops40h 29m

$1,316

San JoséIslip

SJO - ISP

SJOISP

San José Juan Santamaria Intl

Fri 2/13

1:15 am-6:44 pm

3 stops16h 29m

$1,364

San JoséIslip

SJO - ISP

SJOISP

San José Juan Santamaria Intl

Wed 2/11

1:15 am-6:44 pm

3 stops16h 29m

$1,460

San JoséIslip

SJO - ISP

SJOISP

San José Juan Santamaria Intl

Sat 2/14

12:55 am-6:44 pm

3 stops16h 49m

$1,480

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Showing 1-10 of 11 results
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  • Most accurate provider: When it comes to deals on San José-Islip, New York flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San José-Islip, New York flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San José-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San José-Islip, New York 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 San José-Islip, New York 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 San José to Islip

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

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

Currently, September is the cheapest month in which you can book a flight from San José to Islip, New York (average of $163). Flying from San José to Islip, New York in August is currently the most expensive (average of $231). 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 San José to Islip. 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 San José to Islip, New York?

    For as low as $913, Southwest can have you in Islip, New York from San José in 7h 30m. San José and Islip, New York are separated by a distance of 2232 mi.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from San José to Islip, New York (average of $163). Flying from San José to Islip, New York in August is currently the most expensive (average of $231). 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 Islip?

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