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Cheap flights from Islip, New York to San José from $245

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 San José departing on 1/31. 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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0 bags

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Find the cheapest flights from Islip, New York to San José

Cheap round-trip flights

Enter your travel dates to find the best prices.
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
$363JetBlue
Tue, Jan 27 - Tue, Feb 3
JetBlue Logo
9:39 am - 4:23 pm
ISP
-
SJO
7h 44m1 stop
JetBlue Logo
5:30 pm - 8:39 am
SJO
-
ISP
14h 09m1 stop
$403JetBlue
Mon, Feb 9 - Wed, Feb 11
Multiple Airlines Logo
9:52 am - 11:37 am
ISP
-
SJO
26h 45m1 stop
Multiple Airlines Logo
12:33 pm - 6:48 pm
SJO
-
ISP
29h 15m1 stop
$411Multiple Airlines
Thu, Jan 15 - Wed, Jan 21
Multiple Airlines Logo
7:58 pm - 11:37 am
ISP
-
SJO
16h 39m1 stop
Multiple Airlines Logo
10:45 pm - 6:48 pm
SJO
-
ISP
19h 03m3 stops
$412Multiple Airlines
Thu, Jan 15 - Wed, Jan 21
Multiple Airlines Logo
7:58 pm - 6:55 pm
ISP
-
SJO
23h 57m2 stops
Multiple Airlines Logo
12:33 pm - 6:48 pm
SJO
-
ISP
29h 15m1 stop
$414Multiple Airlines
Thu, Jan 15 - Wed, Jan 21
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
$478JetBlue
Mon, Jan 26 - Fri, Jan 30
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
$505JetBlue
Thu, Jan 22 - Sun, Jan 25
JetBlue Logo
1:26 pm - 1:00 pm
ISP
-
SJO
24h 34m1 stop
JetBlue Logo
2:05 pm - 10:02 am
SJO
-
ISP
18h 57m1 stop
$547JetBlue
Sat, Feb 21 - Sat, Feb 28
JetBlue Logo
9:29 am - 11:56 am
ISP
-
SJO
27h 27m1 stop
JetBlue Logo
1:10 pm - 8:47 am
SJO
-
ISP
18h 37m1 stop
$585JetBlue
Sat, Feb 21 - Sat, Feb 28
JetBlue Logo
1:26 pm - 1:00 pm
ISP
-
SJO
24h 34m1 stop
JetBlue Logo
1:10 pm - 8:47 am
SJO
-
ISP
18h 37m1 stop
$597JetBlue
Sat, Feb 21 - Sat, Feb 28

JetBlue flights from Islip, New York to San José

Our best JetBlue deals on Islip, New York to San José flight tickets
JetBlue
Jan 27
ISP10:00 amIslip Long Island
7h 23m
1 stop
SJO4:23 pmSan José Juan Santamaria Intl
Feb 3
SJO5:30 pmSan José Juan Santamaria Intl
14h 22m
1 stop
ISP8:52 amIslip Long Island
$363
Find similar
JetBlue
Feb 9
ISP9:39 amIslip Long Island
7h 44m
1 stop
SJO4:23 pmSan José Juan Santamaria Intl
Feb 11
SJO5:30 pmSan José Juan Santamaria Intl
14h 09m
1 stop
ISP8:39 amIslip Long Island
$403
Find similar
JetBlue
Jan 26
ISP10:00 amIslip Long Island
7h 23m
1 stop
SJO4:23 pmSan José Juan Santamaria Intl
Jan 30
SJO5:30 pmSan José Juan Santamaria Intl
14h 22m
1 stop
ISP8:52 amIslip Long Island
$478
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to San José 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 29, 2025.
Use the filters below to find and compare flights from Islip, New York to San José that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Tue 1/27

10:00 am-4:23 pm

1 stop7h 23m

San José Juan Santamaria Intl

Tue 2/3

5:30 pm-8:52 am

1 stop14h 22m

$363

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Mon 2/9

9:39 am-4:23 pm

1 stop7h 44m

San José Juan Santamaria Intl

Wed 2/11

5:30 pm-8:39 am

1 stop14h 09m

$403

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Thu 1/15

9:52 am-11:37 am

1 stop26h 45m

San José Juan Santamaria Intl

Wed 1/21

12:33 pm-6:48 pm

1 stop29h 15m

$411

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Thu 1/15

7:58 pm-11:37 am

1 stop16h 39m

San José Juan Santamaria Intl

Wed 1/21

10:45 pm-6:48 pm

3 stops19h 03m

$412

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Thu 1/15

7:58 pm-6:55 pm

2 stops23h 57m

San José Juan Santamaria Intl

Wed 1/21

12:33 pm-6:48 pm

1 stop29h 15m

$414

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Mon 1/26

10:00 am-4:23 pm

1 stop7h 23m

San José Juan Santamaria Intl

Fri 1/30

5:30 pm-8:52 am

1 stop14h 22m

$478

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Thu 1/22

10:00 am-4:23 pm

1 stop7h 23m

San José Juan Santamaria Intl

Sun 1/25

5:30 pm-8:52 am

1 stop14h 22m

$505

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sat 2/21

1:26 pm-1:00 pm

1 stop24h 34m

San José Juan Santamaria Intl

Sat 2/28

2:05 pm-10:02 am

1 stop18h 57m

$547

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sat 2/21

9:29 am-11:56 am

1 stop27h 27m

San José Juan Santamaria Intl

Sat 2/28

1:10 pm-8:47 am

1 stop18h 37m

$585

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sat 2/21

1:26 pm-1:00 pm

1 stop24h 34m

San José Juan Santamaria Intl

Sat 2/28

1:10 pm-8:47 am

1 stop18h 37m

$597

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Islip, New York to San José

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 day to depart on your flight to San José?

On average, the least expensive day to fly to San José from Islip, New York is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $455. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Islip, New York to San José on a Sunday will generally be more expensive and average around $548. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to San José?

Our data shows that the cheapest Islip, New York to San José flights are usually those with departure times in the evening. Our users have found flights to San José in the evening for as low as $410. Flights in the afternoon are often more expensive with an average ticket price of $516.

When to book flights from Islip, New York to San José

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to San José according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip, New York to San José (ISP to SJO) flight deals and tips

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

Fastest flight time

6h 56m

Direct flights

None
The fastest flight from Islip, New York to San José takes 6h 56m
There are no direct flights from Islip, New York to San José. There are no popular flight routes from Islip, New York to San José.
Search flight deals

  • How far is Islip Long Island to San José Juan Santamaria Intl by plane?

    The straight-line distance from Islip Long Island to San José Juan Santamaria Intl is 2228.0 mi. By plane, this route typically takes 6h 56m.

  • When did momondo last update prices for flights from Islip Long Island Airport to San José Juan Santamaria Intl Airport?

    Prices for flights from Islip Long Island Airport to San José Juan Santamaria Intl Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Islip Long Island Airport to San José Juan Santamaria Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to San José Juan Santamaria Intl Airport.

  • What documentation or ID do you need to fly to San José Juan Santamaria Intl Airport?

    The required travel and health documents for your San José Juan Santamaria Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San José Juan Santamaria Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near San José?

Book flights to San José if you plan to visit one of these locations
Manuel Antonio
Jacó
Monteverde
Alajuela
Heredia
Dominical
Santa Elena
Esterillos Este

Why use momondo?

Why should I use momondo to find a flight deal from Islip to San José?

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

Can I find flights from Islip to San José with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San José from Islip with this policy.

How can momondo help me find flights from Islip to San José?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San José from Islip.

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

Yes. momondo can track prices for Islip to San José 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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