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Cheap flights from Islip, New York to Costa Rica from $257

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 1/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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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.
Multiple Airlines Logo
7:43 pm - 11:37 am
ISP
-
SJO
16h 54m1 stop
Multiple Airlines Logo
1:30 pm - 8:47 pm
SJO
-
ISP
30h 17m2 stops
$324Multiple Airlines
Thu, Jan 22 - Thu, Jan 29
JetBlue Logo
12:25 pm - 1:00 pm
ISP
-
SJO
25h 35m1 stop
JetBlue Logo
5:30 pm - 8:52 am
SJO
-
ISP
14h 22m1 stop
$519JetBlue
Thu, Jan 22 - Thu, Jan 29
JetBlue Logo
7:40 pm - 8:53 am
ISP
-
SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:52 am
SJO
-
ISP
14h 22m1 stop
$527JetBlue
Wed, Dec 31 - Mon, Jan 26
JetBlue Logo
10:00 am - 4:23 pm
ISP
-
SJO
7h 23m1 stop
JetBlue Logo
5:30 pm - 8:52 am
SJO
-
ISP
14h 22m1 stop
$549JetBlue
Wed, Jan 21 - Wed, Jan 28
JetBlue Logo
9:30 am - 11:56 am
ISP
-
SJO
27h 26m1 stop
JetBlue Logo
1:10 pm - 8:37 am
SJO
-
ISP
18h 27m1 stop
$577JetBlue
Sat, Feb 21 - Sat, Feb 28
JetBlue Logo
7:40 pm - 8:53 am
ISP
-
SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:52 am
SJO
-
ISP
14h 22m1 stop
$581JetBlue
Wed, Dec 31 - Thu, Jan 29
JetBlue Logo
7:40 pm - 8:53 am
ISP
-
SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:52 am
SJO
-
ISP
14h 22m1 stop
$590JetBlue
Wed, Dec 31 - Fri, Jan 23
JetBlue Logo
7:40 pm - 8:53 am
ISP
-
SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:52 am
SJO
-
ISP
14h 22m1 stop
$658JetBlue
Thu, Jan 1 - Mon, Jan 26
JetBlue Logo
7:40 pm - 8:53 am
ISP
-
SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:52 am
SJO
-
ISP
14h 22m1 stop
$709JetBlue
Fri, Jan 2 - Mon, Jan 26
JetBlue Logo
7:40 pm - 8:53 am
ISP
-
SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:52 am
SJO
-
ISP
14h 22m1 stop
$712JetBlue
Thu, Jan 1 - Wed, Jan 28

JetBlue flights from Islip, New York to Costa Rica

Our best JetBlue deals on Islip, New York to Costa Rica flight tickets
JetBlue
Jan 22
ISP12:25 pmIslip Long Island
25h 35m
1 stop
SJO1:00 pmSan José Juan Santamaria Intl
Jan 29
SJO5:30 pmSan José Juan Santamaria Intl
14h 22m
1 stop
ISP8:52 amIslip Long Island
$519
Find similar
JetBlue
Dec 31
ISP7:40 pmIslip Long Island
14h 13m
1 stop
SJO8:53 amSan José Juan Santamaria Intl
Jan 26
SJO5:30 pmSan José Juan Santamaria Intl
14h 22m
1 stop
ISP8:52 amIslip Long Island
$527
Find similar
JetBlue
Jan 21
ISP10:00 amIslip Long Island
7h 23m
1 stop
SJO4:23 pmSan José Juan Santamaria Intl
Jan 28
SJO5:30 pmSan José Juan Santamaria Intl
14h 22m
1 stop
ISP8:52 amIslip Long Island
$549
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 December 8, 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 1/22

7:43 pm-11:37 am

1 stop16h 54m

San José Juan Santamaria Intl

Thu 1/29

1:30 pm-8:47 pm

2 stops30h 17m

$324

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Thu 1/22

12:25 pm-1:00 pm

1 stop25h 35m

San José Juan Santamaria Intl

Thu 1/29

5:30 pm-8:52 am

1 stop14h 22m

$519

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Wed 12/31

7:40 pm-8:53 am

1 stop14h 13m

San José Juan Santamaria Intl

Mon 1/26

5:30 pm-8:52 am

1 stop14h 22m

$527

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Wed 1/21

10:00 am-4:23 pm

1 stop7h 23m

San José Juan Santamaria Intl

Wed 1/28

5:30 pm-8:52 am

1 stop14h 22m

$549

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sat 2/21

9:30 am-11:56 am

1 stop27h 26m

San José Juan Santamaria Intl

Sat 2/28

1:10 pm-8:37 am

1 stop18h 27m

$577

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Wed 12/31

7:40 pm-8:53 am

1 stop14h 13m

San José Juan Santamaria Intl

Thu 1/29

5:30 pm-8:52 am

1 stop14h 22m

$581

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Wed 12/31

7:40 pm-8:53 am

1 stop14h 13m

San José Juan Santamaria Intl

Fri 1/23

5:30 pm-8:52 am

1 stop14h 22m

$590

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

Mon 1/26

5:30 pm-8:52 am

1 stop14h 22m

$658

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

Mon 1/26

5:30 pm-8:52 am

1 stop14h 22m

$709

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

Wed 1/28

5:30 pm-8:52 am

1 stop14h 22m

$712

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

Fastest flight time

7h 23m

Direct flights

None
The fastest flight from Islip, New York to Costa Rica takes 7h 23m
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.
Search flight deals

  • 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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