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Cheap flights from Islip, New York to San José from $221

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 4/27. 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.
Frontier Logo
10:48 am - 8:20 am
ISP
-
SJO
23h 32m
1 stop
Frontier Logo
9:35 am - 10:03 am
SJO
-
ISP
22h 28m
1 stop
$469Frontier
Jum, Ags 7 - Jum, Ags 14
JetBlue Logo
5:00 pm - 11:22 am
ISP
-
SJO
20h 22m
1 stop
JetBlue Logo
1:05 pm - 11:17 pm
SJO
-
ISP
8h 12m
1 stop
$528JetBlue
Sen, Ags 17 - Rab, Ags 19
Frontier Logo
10:48 am - 8:20 am
ISP
-
SJO
23h 32m
1 stop
Frontier Logo
9:35 am - 3:56 pm
SJO
-
ISP
28h 21m
1 stop
$534Frontier
Kam, Jul 9 - Sen, Jul 20
Southwest Logo
6:50 am - 7:00 pm
ISP
-
SJO
14h 10m
2 stops
Southwest Logo
9:00 am - 11:30 pm
SJO
-
ISP
12h 30m
2 stops
$583Southwest
Sen, Mei 18 - Sen, Mei 25
Southwest Logo
6:10 am - 6:40 pm
ISP
-
SJO
14h 30m
2 stops
Southwest Logo
9:00 am - 9:05 pm
SJO
-
ISP
10h 05m
2 stops
$616Southwest
Sen, Ags 17 - Rab, Ags 19
JetBlue Logo
11:25 am - 12:57 pm
ISP
-
SJO
27h 32m
2 stops
JetBlue Logo
1:05 pm - 11:17 pm
SJO
-
ISP
8h 12m
1 stop
$629JetBlue
Sen, Ags 17 - Rab, Ags 19
Southwest Logo
6:45 am - 12:45 pm
ISP
-
SJO
8h 00m
1 stop
Southwest Logo
9:00 am - 10:05 pm
SJO
-
ISP
11h 05m
2 stops
$639Southwest
Jum, Ags 7 - Jum, Ags 14
Multiple Airlines Logo
10:48 am - 8:20 am
ISP
-
SJO
23h 32m
1 stop
Multiple Airlines Logo
5:45 am - 10:56 pm
SJO
-
ISP
39h 11m
3 stops
$662Multiple Airlines
Kam, Jul 9 - Sen, Jul 20
Southwest Logo
6:50 am - 12:10 pm
ISP
-
SJO
7h 20m
1 stop
Southwest Logo
9:00 am - 11:30 pm
SJO
-
ISP
12h 30m
2 stops
$669Southwest
Sen, Mei 18 - Sen, Mei 25
Southwest Logo
6:10 am - 6:40 pm
ISP
-
SJO
14h 30m
2 stops
Southwest Logo
9:00 am - 10:05 pm
SJO
-
ISP
11h 05m
2 stops
$725Southwest
Jum, Ags 7 - Jum, Ags 14

Frontier flights from Islip, New York to San José

Our best Frontier deals on Islip, New York to San José flight tickets
Frontier
Aug 7
ISP10:48 amIslip Long Island
23h 32m
1 stop
SJO8:20 amSan José Juan Santamaria Intl
Aug 14
SJO9:35 amSan José Juan Santamaria Intl
22h 28m
1 stop
ISP10:03 amIslip Long Island
$469
Frontier
Jul 9
ISP10:48 amIslip Long Island
23h 32m
1 stop
SJO8:20 amSan José Juan Santamaria Intl
Jul 20
SJO9:35 amSan José Juan Santamaria Intl
28h 21m
1 stop
ISP3:56 pmIslip Long Island
$534

Southwest flights from Islip, New York to San José

Our best Southwest deals on Islip, New York to San José flight tickets
Southwest
May 18
ISP6:50 amIslip Long Island
14h 10m
2 stops
SJO7:00 pmSan José Juan Santamaria Intl
May 25
SJO9:00 amSan José Juan Santamaria Intl
12h 30m
2 stops
ISP11:30 pmIslip Long Island
$583
Southwest
Aug 17
ISP6:10 amIslip Long Island
14h 30m
2 stops
SJO6:40 pmSan José Juan Santamaria Intl
Aug 19
SJO9:00 amSan José Juan Santamaria Intl
10h 05m
2 stops
ISP9:05 pmIslip Long Island
$616
Southwest
Aug 7
ISP6:45 amIslip Long Island
8h 00m
1 stop
SJO12:45 pmSan José Juan Santamaria Intl
Aug 14
SJO9:00 amSan José Juan Santamaria Intl
11h 05m
2 stops
ISP10:05 pmIslip Long Island
$639

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 April 4, 2026.
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

Cheapest round-trip

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Jum 8/7

10:48 am-8:20 am

1 stop23h 32m

San José Juan Santamaria Intl

Jum 8/14

9:35 am-10:03 am

1 stop22h 28m

$469

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sen 8/17

5:00 pm-11:22 am

1 stop20h 22m

San José Juan Santamaria Intl

Rab 8/19

1:05 pm-11:17 pm

1 stop8h 12m

$528

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Kam 7/9

10:48 am-8:20 am

1 stop23h 32m

San José Juan Santamaria Intl

Sen 7/20

9:35 am-3:56 pm

1 stop28h 21m

$534

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sen 5/18

6:50 am-7:00 pm

2 stops14h 10m

San José Juan Santamaria Intl

Sen 5/25

9:00 am-11:30 pm

2 stops12h 30m

$583

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sen 8/17

6:10 am-6:40 pm

2 stops14h 30m

San José Juan Santamaria Intl

Rab 8/19

9:00 am-9:05 pm

2 stops10h 05m

$616

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sen 8/17

11:25 am-12:57 pm

2 stops27h 32m

San José Juan Santamaria Intl

Rab 8/19

1:05 pm-11:17 pm

1 stop8h 12m

$629
Quickest round-trip

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Jum 8/7

6:45 am-12:45 pm

1 stop8h 00m

San José Juan Santamaria Intl

Jum 8/14

9:00 am-10:05 pm

2 stops11h 05m

$639

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Kam 7/9

10:48 am-8:20 am

1 stop23h 32m

San José Juan Santamaria Intl

Sen 7/20

5:45 am-10:56 pm

3 stops39h 11m

$662

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Sen 5/18

6:50 am-12:10 pm

1 stop7h 20m

San José Juan Santamaria Intl

Sen 5/25

9:00 am-11:30 pm

2 stops12h 30m

$669

IslipSan José

ISP - SJO

ISPSJO

Islip Long Island

Jum 8/7

6:10 am-6:40 pm

2 stops14h 30m

San José Juan Santamaria Intl

Jum 8/14

9:00 am-10:05 pm

2 stops11h 05m

$725

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 San José from

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 $449. 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 $547. 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 $489. Flights in the afternoon are often more expensive with an average ticket price of $504.

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

Frequently asked questions about flying from Islip, New York to San José

  • 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
Santa Elena
Dominical
San Gerardo de Dota
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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