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Cheap flights from Islip, New York to Costa Rica from $180

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to Costa Rica departing on 1/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Islip, New York to Costa Rica

Cheap round-trip flights

Enter your travel dates to find the best prices.
JetBlue Logo
1:45 pm - 12:56 pmISP-SJO
24h 11m1 stop
JetBlue Logo
5:28 pm - 6:01 pmSJO-ISP
23h 33m1 stop
$493JetBlue
Find Deal
Thu, Nov 13 - Thu, Nov 20
JetBlue Logo
9:40 am - 4:24 pmISP-SJO
7h 44m1 stop
JetBlue Logo
5:30 pm - 8:55 amSJO-ISP
14h 25m1 stop
$522JetBlue
Find Deal
Thu, Jan 22 - Mon, Jan 26
JetBlue Logo
12:10 pm - 12:55 pmISP-SJO
25h 45m1 stop
JetBlue Logo
1:55 pm - 10:00 amSJO-ISP
19h 05m1 stop
$543JetBlue
Find Deal
Sat, Feb 21 - Sat, Feb 28
JetBlue Logo
9:40 am - 4:24 pmISP-SJO
7h 44m1 stop
JetBlue Logo
5:30 pm - 8:55 amSJO-ISP
14h 25m1 stop
$544JetBlue
Find Deal
Fri, Jan 9 - Wed, Jan 14
JetBlue Logo
7:40 pm - 8:53 amISP-SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:55 amSJO-ISP
14h 25m1 stop
$577JetBlue
Find Deal
Fri, Jan 2 - Fri, Jan 9
JetBlue Logo
12:10 pm - 12:55 pmISP-LIR
25h 45m1 stop
JetBlue Logo
2:00 pm - 11:25 amLIR-ISP
20h 25m1 stop
$597JetBlue
Find Deal
Wed, Feb 25 - Wed, Mar 4
JetBlue Logo
7:40 pm - 8:53 amISP-SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:55 amSJO-ISP
14h 25m1 stop
$605JetBlue
Find Deal
Thu, Jan 1 - Sat, Jan 10
JetBlue Logo
9:40 am - 4:24 pmISP-SJO
7h 44m1 stop
JetBlue Logo
5:30 pm - 8:55 amSJO-ISP
14h 25m1 stop
$629JetBlue
Find Deal
Sat, Jan 10 - Tue, Jan 13
JetBlue Logo
12:10 pm - 2:50 pmISP-LIR
27h 40m2 stops
JetBlue Logo
2:00 pm - 11:25 amLIR-ISP
20h 25m1 stop
$634JetBlue
Find Deal
Wed, Feb 25 - Wed, Mar 4
JetBlue Logo
7:40 pm - 8:53 amISP-SJO
14h 13m1 stop
JetBlue Logo
10:00 am - 6:44 pmSJO-ISP
7h 44m1 stop
$1,114JetBlue
Find Deal
Sun, Dec 21 - Thu, Dec 25

JetBlue flights from Islip, New York to Costa Rica

Our best JetBlue deals on Islip, New York to Costa Rica flight tickets
JetBlue
Nov 13
ISP1:45 pmIslip Long Island
24h 11m
1 stop
SJO12:56 pmSan José Juan Santamaria Intl
Nov 20
SJO5:28 pmSan José Juan Santamaria Intl
23h 33m
1 stop
ISP6:01 pmIslip Long Island
$493
Find similar
JetBlue
Jan 22
ISP9:40 amIslip Long Island
7h 44m
1 stop
SJO4:24 pmSan José Juan Santamaria Intl
Jan 26
SJO5:30 pmSan José Juan Santamaria Intl
14h 25m
1 stop
ISP8:55 amIslip Long Island
$522
Find similar
JetBlue
Feb 21
ISP12:10 pmIslip Long Island
25h 45m
1 stop
SJO12:55 pmSan José Juan Santamaria Intl
Feb 28
SJO1:55 pmSan José Juan Santamaria Intl
19h 05m
1 stop
ISP10:00 amIslip Long Island
$543
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to Costa Rica 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, momondo users made 832,500 searches. Data last updated October 20, 2025.
Use the filters below to find and compare flights from Islip, New York to Costa Rica that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Thu 11/13

1:45 pm-12:56 pm

1 stop24h 11m

San José Juan Santamaria Intl

Thu 11/20

5:28 pm-6:01 pm

1 stop23h 33m

$493

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Thu 1/22

9:40 am-4:24 pm

1 stop7h 44m

San José Juan Santamaria Intl

Mon 1/26

5:30 pm-8:55 am

1 stop14h 25m

$522

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sat 2/21

12:10 pm-12:55 pm

1 stop25h 45m

San José Juan Santamaria Intl

Sat 2/28

1:55 pm-10:00 am

1 stop19h 05m

$543

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Fri 1/9

9:40 am-4:24 pm

1 stop7h 44m

San José Juan Santamaria Intl

Wed 1/14

5:30 pm-8:55 am

1 stop14h 25m

$544

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Fri 1/2

7:40 pm-8:53 am

1 stop14h 13m

San José Juan Santamaria Intl

Fri 1/9

5:30 pm-8:55 am

1 stop14h 25m

$577

IslipLiberia

ISP - LIR

ISPLIR

Islip Long Island

Wed 2/25

12:10 pm-12:55 pm

1 stop25h 45m

Liberia

Wed 3/4

2:00 pm-11:25 am

1 stop20h 25m

$597

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Thu 1/1

7:40 pm-8:53 am

1 stop14h 13m

San José Juan Santamaria Intl

Sat 1/10

5:30 pm-8:55 am

1 stop14h 25m

$605

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sat 1/10

9:40 am-4:24 pm

1 stop7h 44m

San José Juan Santamaria Intl

Tue 1/13

5:30 pm-8:55 am

1 stop14h 25m

$629

IslipLiberia

ISP - LIR

ISPLIR

Islip Long Island

Wed 2/25

12:10 pm-2:50 pm

2 stops27h 40m

Liberia

Wed 3/4

2:00 pm-11:25 am

1 stop20h 25m

$634

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sun 12/21

7:40 pm-8:53 am

1 stop14h 13m

San José Juan Santamaria Intl

Thu 12/25

10:00 am-6:44 pm

1 stop7h 44m

$1,114

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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See travel insights to Costa Rica from

How to get the cheapest flight ticket from Islip, New York to Costa Rica

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Islip Long Island to Costa Rica?

JetBlue is the most popular carrier operating from Islip Long Island to Costa Rica

What airlines fly to Costa Rica?

United Airlines, JetBlue and American Airlines are the top three most popular airlines that fly to Costa Rica from Islip, New York according to our data. United Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Costa Rica. Keep in mind that there are 9 different airlines that fly to Costa Rica on a routine basis, so you have a few additional options to choose from.

Cheap Islip, New York to Costa Rica flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to Costa Rica

Direct flights

None
There are no direct flights from Islip, New York to Costa Rica. There are no popular flight routes from Islip, New York to Costa Rica.
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  • When did momondo last update prices for flights from Islip Long Island Airport to Costa Rica?

    Prices for flights from Islip Long Island Airport to Costa Rica refresh daily.

  • How old do you have to be to fly from Islip Long Island Airport to Costa Rica?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to Costa Rica.

  • What documentation or ID do you need to fly to Costa Rica?

    The travel and health documents required for your trip to Costa Rica can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Costa Rica. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Islip to Costa Rica?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Islip to Costa Rica. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Islip to Costa Rica with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Islip to Costa Rica flights to just show those with flexible booking policies.

How can momondo help me find flights from Islip to Costa Rica?

Once all potential Islip to Costa Rica flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Islip to Costa Rica right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Islip to Costa Rica flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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