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ISP - SJO

Find cheap flights from Islip to San José from $112

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to San José departing on 5/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Mon 5/20
Mon 5/27

Search hundreds of travel sites at once for deals on flights to San José

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to San José, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to San José, as well as popular online travel agencies
In the last 7 days travelers have searched 44,212,662 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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Flights from Islip to San José - Travel Insights & Trends

Get data-powered insights and trends into flights from Islip to San José to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Islip, New York to San José, San José Province?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Islip, New York to San José, San José Province, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Islip, New York to San José, San José Province is September, where tickets cost $329 on average. On the other hand, the most expensive months are December and April, where the average cost of tickets is $782 and $587 respectively.

How far in advance should I book a flight from Islip, New York to San José, San José Province?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Islip, New York to San José, San José Province, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Islip, New York to San José, San José Province, you should book around 1 day before departure. For the absolute cheapest price, our data suggests you should book 43 days before departure.

Good to know

Cheapest flight

$112
Flight from Islip to San José

When to book flights from Islip to San José

Are your dates flexible? Find out the best times to travel from Islip to San José based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Islip to San José

  • What is the cheapest flight from Islip, New York to San José, San José Province?

    In the last 3 days, the lowest price for a flight from Islip, New York to San José, San José Province was $112 for a one-way ticket.

  • Do I need a passport to fly between Islip and San José?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Islip and on arrival in San José.

  • Which aircraft models fly most regularly from Islip to San José?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Islip to San José?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Islip to San José.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to San José?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San José from Islip is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Islip to San José?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San José with an airline and back to Islip with another airline. Booking your flights between Islip and SJO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to San José?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San José from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Book cheap flights from Islip to San José

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Islip to San José found on KAYAK in the last 72 hours.
5/11Sat
1 stop
16h 21mISP-SJO
$112

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Islip - San José Flights

Departure:

Islip (ISP)United States

Destination:

San José (SJO)Costa Rica

Return flight deals:

San José - Islip

Cabin classes: