In terms of precipitation, rainfall in Islip ranges from 3.3 - 4.4 inches per month. March is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Islip when rainfall is around 3.3 in.

If weather is an important factor for your trip to Islip, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

What is the cheapest time of day to fly from CR to ISP?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Costa Rica to Islip as you normally would.

What airport do you fly into for flights to Islip from Costa Rica?

Islip Long Island (ISP) is the airport you will fly into if you book a flight from Costa Rica to Islip. It is only a 7.2 mi journey from Long Island (ISP) to Islip’s city center.

Can I find deals for flights from Costa Rica to Islip that include hotel bookings?

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

How can I find direct flights from Costa Rica to Islip?

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

Can I find deals for business class flights from Costa Rica to Islip?

Yes. Cheapflights offers flight deals from Costa Rica 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.

$484+ Cheap Flights from Costa Rica to Islip

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Cheap flight deals from Costa Rica to Islip

Popular in	April
Cheapest in	September
Average price	$312

Highest demand for flights based on searches. 0% potential increase in price ($3 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

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Find flight deals from Costa Rica to Islip

One-way flights from Costa Rica to Islip
Search for one-way flight options from Costa Rica to Islip. Find affordable one-way fares based on user searches. Data last updated September 17, 2025.

Sat 1/310:41 amSJO - ISP

1 stop8h 33mFrontier

Deal found 9/17

$484

Sun 1/410:00 amSJO - ISP

1 stop7h 44mJetBlue

Deal found 9/16

$1,520

Fly from

Fly to

Route

Depart

Return

Price

San JoséIslip

SJO - ISP

SJOISP

San José Juan Santamaria Intl

Sat 1/3

10:41 am-8:14 pm

1 stop8h 33m

$484

San JoséIslip

SJO - ISP

SJOISP

San José Juan Santamaria Intl

Sun 1/4

10:00 am-6:44 pm

1 stop7h 44m

$1,520

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Best time to book a flight from Costa Rica to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Costa Rica 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 Costa Rica to Islip

What is the cheapest month to book a flight from Costa Rica to Islip?

Currently, January is the cheapest month in which you can book a flight from Costa Rica to Islip (average of $108). Flying from Costa Rica to Islip in November is currently the most expensive (average of $213). 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

What airport do you fly into for flights to Islip from Costa Rica?
Islip Long Island (ISP) is the airport you will fly into if you book a flight from Costa Rica to Islip. It is only a 7.2 mi journey from Long Island (ISP) to Islip’s city center.
Can I find deals for flights from Costa Rica to Islip that include hotel bookings?
Yes. In addition to deals on Costa Rica to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Costa Rica to Islip?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Costa Rica to Islip.
Can I find deals for business class flights from Costa Rica to Islip?
Yes. Cheapflights offers flight deals from Costa Rica 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 Costa Rica to Islip?
Currently, January is the cheapest month in which you can book a flight from Costa Rica to Islip (average of $108). Flying from Costa Rica to Islip in November is currently the most expensive (average of $213). 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.

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$484+ Cheap flights from Costa Rica to Islip (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 1/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Costa Rica to Islip with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Costa Rica to Islip

Keep the following information in mind while searching for Costa Rica to Islip flight deals. Data was last updated September 17, 2025.

Popular in

Cheapest in

Average price

Find flight deals from Costa Rica to Islip

One-way flights from Costa Rica to IslipSearch for one-way flight options from Costa Rica to Islip. Find affordable one-way fares based on user searches. Data last updated September 17, 2025.

Search for one-way flight options from Costa Rica to Islip. Find affordable one-way fares based on user searches. Data last updated September 17, 2025.

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Use the filters below to find and compare flights from Costa Rica to Islip that are best for you.

Best time to book a flight from Costa Rica to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Costa Rica with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Costa Rica to Islip

What is the cheapest month to book a flight from Costa Rica to Islip?

Related info for your journey

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

What airport do you fly into for flights to Islip from Costa Rica?

Can I find deals for flights from Costa Rica to Islip that include hotel bookings?

How can I find direct flights from Costa Rica to Islip?

Can I find deals for business class flights from Costa Rica to Islip?

What is the cheapest month to book a flight from Costa Rica to Islip?

Traveling to a place near Islip?

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One-way flights from Costa Rica to Islip
Search for one-way flight options from Costa Rica to Islip. Find affordable one-way fares based on user searches. Data last updated September 17, 2025.