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Cheap flights from Islip, New York to San José from $147

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 1/23. 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 San José

Cheap round-trip flights

Enter your travel dates to find the best prices.
JetBlue Logo
7:40 pm - 8:53 amISP-SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:55 amSJO-ISP
14h 25m1 stop
$307JetBlue
Find Deal
Thu, Jan 1 - Tue, Jan 13
JetBlue Logo
7:40 pm - 8:53 amISP-SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:55 amSJO-ISP
14h 25m1 stop
$322JetBlue
Find Deal
Wed, Dec 31 - Mon, Jan 12
JetBlue Logo
7:40 pm - 8:53 amISP-SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:55 amSJO-ISP
14h 25m1 stop
$336JetBlue
Find Deal
Thu, Jan 1 - Sun, Jan 11
JetBlue Logo
7:40 pm - 8:53 amISP-SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:55 amSJO-ISP
14h 25m1 stop
$351JetBlue
Find Deal
Wed, Dec 31 - Sun, Jan 11
JetBlue Logo
7:40 pm - 8:53 amISP-SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:55 amSJO-ISP
14h 25m1 stop
$371JetBlue
Find Deal
Fri, Jan 2 - Mon, Jan 12
JetBlue Logo
7:40 pm - 8:53 amISP-SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:55 amSJO-ISP
14h 25m1 stop
$400JetBlue
Find Deal
Fri, Jan 2 - Sun, Jan 11
JetBlue Logo
7:40 pm - 8:53 amISP-SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:55 amSJO-ISP
14h 25m1 stop
$419JetBlue
Find Deal
Thu, Jan 1 - Sat, Jan 10
JetBlue Logo
7:40 pm - 8:53 amISP-SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:55 amSJO-ISP
14h 25m1 stop
$434JetBlue
Find Deal
Wed, Dec 31 - Sat, Jan 10
JetBlue Logo
7:40 pm - 8:53 amISP-SJO
14h 13m1 stop
JetBlue Logo
5:30 pm - 8:55 amSJO-ISP
14h 25m1 stop
$483JetBlue
Find Deal
Fri, Jan 2 - 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
$497JetBlue
Find Deal
Wed, Jan 21 - Fri, Feb 6

JetBlue flights from Islip, New York to San José

Our best JetBlue deals on Islip, New York to San José flight tickets
JetBlue
Jan 1
ISP7:40 pmIslip Long Island
14h 13m
1 stop
SJO8:53 amSan José Juan Santamaria Intl
Jan 13
SJO5:30 pmSan José Juan Santamaria Intl
14h 25m
1 stop
ISP8:55 amIslip Long Island
$307
Find similar
JetBlue
Dec 31
ISP7:40 pmIslip Long Island
14h 13m
1 stop
SJO8:53 amSan José Juan Santamaria Intl
Jan 12
SJO5:30 pmSan José Juan Santamaria Intl
14h 25m
1 stop
ISP8:55 amIslip Long Island
$322
Find similar
JetBlue
Jan 1
ISP7:40 pmIslip Long Island
14h 13m
1 stop
SJO8:53 amSan José Juan Santamaria Intl
Jan 11
SJO5:30 pmSan José Juan Santamaria Intl
14h 25m
1 stop
ISP8:55 amIslip Long Island
$336
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 November 6, 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

Thu 1/1

7:40 pm-8:53 am

1 stop14h 13m

San José Juan Santamaria Intl

Tue 1/13

5:30 pm-8:55 am

1 stop14h 25m

$307

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 1/12

5:30 pm-8:55 am

1 stop14h 25m

$322

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

Sun 1/11

5:30 pm-8:55 am

1 stop14h 25m

$336

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

Sun 1/11

5:30 pm-8:55 am

1 stop14h 25m

$351

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 1/12

5:30 pm-8:55 am

1 stop14h 25m

$371

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

Sun 1/11

5:30 pm-8:55 am

1 stop14h 25m

$400

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

$419

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

Sat 1/10

5:30 pm-8:55 am

1 stop14h 25m

$434

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

Sat 1/10

5:30 pm-8:55 am

1 stop14h 25m

$483

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Wed 1/21

9:40 am-4:24 pm

1 stop7h 44m

San José Juan Santamaria Intl

Fri 2/6

5:30 pm-8:55 am

1 stop14h 25m

$497

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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 Tuesday. momondo users have found tickets for Tuesday departures for as low as $469. 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 $576. 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 at noon. Our users have found flights to San José at noon for as low as $487. Flights in the morning are often more expensive with an average ticket price of $529.

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

Direct flights

None
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.
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  • 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 7h 44m.

  • 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
Alajuela
Monteverde
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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