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Cheap flights from Islip, New York to Costa Rica from $178

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 6/10. 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
6:00 am - 12:57 pm
ISP
-
SJO
8h 57m
1 stop
JetBlue Logo
1:05 pm - 11:17 pm
SJO
-
ISP
8h 12m
1 stop
$603JetBlue
Mon, Aug 17 - Wed, Aug 19
JetBlue Logo
6:00 am - 12:57 pm
ISP
-
SJO
8h 57m
1 stop
JetBlue Logo
1:05 pm - 11:17 pm
SJO
-
ISP
8h 12m
1 stop
$687JetBlue
Mon, Aug 17 - Wed, Aug 19
JetBlue Logo
6:00 am - 12:57 pm
ISP
-
SJO
8h 57m
1 stop
JetBlue Logo
1:05 pm - 11:17 pm
SJO
-
ISP
8h 12m
1 stop
$707JetBlue
Mon, Aug 17 - Wed, Aug 19
JetBlue Logo
6:00 am - 12:57 pm
ISP
-
SJO
8h 57m
1 stop
JetBlue Logo
1:05 pm - 11:26 pm
SJO
-
ISP
8h 21m
1 stop
$748JetBlue
Tue, Aug 18 - Sat, Aug 29
JetBlue Logo
6:00 am - 12:57 pm
ISP
-
SJO
8h 57m
1 stop
JetBlue Logo
1:05 pm - 11:17 pm
SJO
-
ISP
8h 12m
1 stop
$752JetBlue
Mon, Aug 3 - Fri, Aug 7
Southwest Logo
9:00 am - 7:00 pm
ISP
-
SJO
12h 00m
2 stops
Southwest Logo
1:40 pm - 9:45 am
SJO
-
ISP
18h 05m
2 stops
$755Southwest
Tue, Jun 2 - Fri, Jun 12
Multiple Airlines Logo
6:02 pm - 9:56 pm
ISP
-
SJO
53h 54m
2 stops
Multiple Airlines Logo
7:07 am - 8:57 pm
SJO
-
ISP
11h 50m
1 stop
$786Multiple Airlines
Tue, Jun 2 - Fri, Jun 12
JetBlue Logo
6:00 am - 11:22 am
ISP
-
SJO
31h 22m
2 stops
JetBlue Logo
1:05 pm - 11:17 pm
SJO
-
ISP
8h 12m
1 stop
$796JetBlue
Mon, Aug 17 - Wed, Aug 19
JetBlue Logo
6:00 am - 12:57 pm
ISP
-
SJO
8h 57m
1 stop
JetBlue Logo
1:05 pm - 11:17 pm
SJO
-
ISP
8h 12m
1 stop
$815JetBlue
Wed, Jul 29 - Wed, Aug 5
Multiple Airlines Logo
6:02 pm - 3:11 pm
ISP
-
SJO
23h 09m
1 stop
Multiple Airlines Logo
7:07 am - 8:57 pm
SJO
-
ISP
11h 50m
1 stop
$850Multiple Airlines
Tue, Jun 2 - Fri, Jun 12

JetBlue flights from Islip, New York to Costa Rica

Our best JetBlue deals on Islip, New York to Costa Rica flight tickets
JetBlue
Aug 17
ISP6:00 amIslip Long Island
8h 57m
1 stop
SJO12:57 pmSan José Juan Santamaria Intl
Aug 19
SJO1:05 pmSan José Juan Santamaria Intl
8h 12m
1 stop
ISP11:17 pmIslip Long Island
$603
JetBlue
Aug 17
ISP6:00 amIslip Long Island
8h 57m
1 stop
SJO12:57 pmSan José Juan Santamaria Intl
Aug 19
SJO1:05 pmSan José Juan Santamaria Intl
8h 12m
1 stop
ISP11:17 pmIslip Long Island
$687
JetBlue
Aug 17
ISP6:00 amIslip Long Island
8h 57m
1 stop
SJO12:57 pmSan José Juan Santamaria Intl
Aug 19
SJO1:05 pmSan José Juan Santamaria Intl
8h 12m
1 stop
ISP11:17 pmIslip Long Island
$707

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 May 13, 2026.
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

Cheapest round-trip
Quickest round-trip

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Mon 8/17

6:00 am-12:57 pm

1 stop8h 57m

San José Juan Santamaria Intl

Wed 8/19

1:05 pm-11:17 pm

1 stop8h 12m

$603

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Mon 8/17

6:00 am-12:57 pm

1 stop8h 57m

San José Juan Santamaria Intl

Wed 8/19

1:05 pm-11:17 pm

1 stop8h 12m

$687

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Mon 8/17

6:00 am-12:57 pm

1 stop8h 57m

San José Juan Santamaria Intl

Wed 8/19

1:05 pm-11:17 pm

1 stop8h 12m

$707

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Tue 8/18

6:00 am-12:57 pm

1 stop8h 57m

San José Juan Santamaria Intl

Sat 8/29

1:05 pm-11:26 pm

1 stop8h 21m

$748

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Mon 8/3

6:00 am-12:57 pm

1 stop8h 57m

San José Juan Santamaria Intl

Fri 8/7

1:05 pm-11:17 pm

1 stop8h 12m

$752

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Tue 6/2

9:00 am-7:00 pm

2 stops12h 00m

San José Juan Santamaria Intl

Fri 6/12

1:40 pm-9:45 am

2 stops18h 05m

$755

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Tue 6/2

6:02 pm-9:56 pm

2 stops53h 54m

San José Juan Santamaria Intl

Fri 6/12

7:07 am-8:57 pm

1 stop11h 50m

$786

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Mon 8/17

6:00 am-11:22 am

2 stops31h 22m

San José Juan Santamaria Intl

Wed 8/19

1:05 pm-11:17 pm

1 stop8h 12m

$796

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Wed 7/29

6:00 am-12:57 pm

1 stop8h 57m

San José Juan Santamaria Intl

Wed 8/5

1:05 pm-11:17 pm

1 stop8h 12m

$815

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Tue 6/2

6:02 pm-3:11 pm

1 stop23h 09m

San José Juan Santamaria Intl

Fri 6/12

7:07 am-8:57 pm

1 stop11h 50m

$850

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?

Frontier, Southwest, and JetBlue are the most popular carriers operating from Islip Long Island to Costa Rica

What airlines fly to Costa Rica?

United Airlines, JetBlue and Avianca 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 51% 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 35m

Direct flights

None
The fastest flight from Islip, New York to Costa Rica takes 7h 35m
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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Frequently asked questions about flying from Islip, New York to Costa Rica

  • 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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