Flights from Newark to San Isidro

Cheapest flights from Newark

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Sep 6 - Wed, Sep 10

EWR

Newark Liberty Intl. Airport

SJO

Juan Santamaría Intl.

$277 Roundtrip, found 6 days ago

$277

Roundtrip

found 6 days ago

Select United flight, departing Sat, Sep 6 from Newark Liberty Intl. Airport to Juan Santamaría Intl., returning Wed, Sep 10, priced at $277 found 6 days ago

Wed, Sep 3 - Tue, Sep 9

EWR

Newark Liberty Intl. Airport

SJO

Juan Santamaría Intl.

$278 Roundtrip, found 6 days ago

$278

Roundtrip

found 6 days ago

Select Delta flight, departing Wed, Sep 3 from Newark Liberty Intl. Airport to Juan Santamaría Intl., returning Tue, Sep 9, priced at $278 found 6 days ago

Sat, Sep 6 - Wed, Sep 10

EWR

Newark Liberty Intl. Airport

SJO

Juan Santamaría Intl.

$279 Roundtrip, found 6 days ago

$279

Roundtrip

found 6 days ago

Select United flight, departing Sat, Sep 6 from Newark Liberty Intl. Airport to Juan Santamaría Intl., returning Wed, Sep 10, priced at $279 found 6 days ago

Sat, Sep 6 - Wed, Sep 10

EWR

Newark Liberty Intl. Airport

SJO

Juan Santamaría Intl.

$282 Roundtrip, found 6 days ago

$282

Roundtrip

found 6 days ago

Select American Airlines flight, departing Sat, Sep 6 from Newark Liberty Intl. Airport to Juan Santamaría Intl., returning Wed, Sep 10, priced at $282 found 6 days ago

Sat, Sep 6 - Wed, Sep 10

EWR

Newark Liberty Intl. Airport

SJO

Juan Santamaría Intl.

$283 Roundtrip, found 6 days ago

$283

Roundtrip

found 6 days ago

Select American Airlines flight, departing Sat, Sep 6 from Newark Liberty Intl. Airport to Juan Santamaría Intl., returning Wed, Sep 10, priced at $283 found 6 days ago

Sat, Sep 6 - Wed, Sep 10

EWR

Newark Liberty Intl. Airport

SJO

Juan Santamaría Intl.

$285 Roundtrip, found 6 days ago

$285

Roundtrip

found 6 days ago

Select United flight, departing Sat, Sep 6 from Newark Liberty Intl. Airport to Juan Santamaría Intl., returning Wed, Sep 10, priced at $285 found 6 days ago

Mon, Oct 27 - Sat, Nov 1

EWR

Newark Liberty Intl. Airport

SJO

Juan Santamaría Intl.

$288 Roundtrip, found 16 hours ago

$288

Roundtrip

found 16 hours ago

Select Delta flight, departing Mon, Oct 27 from Newark Liberty Intl. Airport to Juan Santamaría Intl., returning Sat, Nov 1, priced at $288 found 16 hours ago

Sat, Sep 6 - Wed, Sep 10

EWR

Newark Liberty Intl. Airport

SJO

Juan Santamaría Intl.

$289 Roundtrip, found 6 days ago

$289

Roundtrip

found 6 days ago

Select American Airlines flight, departing Sat, Sep 6 from Newark Liberty Intl. Airport to Juan Santamaría Intl., returning Wed, Sep 10, priced at $289 found 6 days ago

Sat, Sep 6 - Wed, Sep 10

EWR

Newark Liberty Intl. Airport

SJO

Juan Santamaría Intl.

$290 Roundtrip, found 6 days ago

$290

Roundtrip

found 6 days ago

Select United flight, departing Sat, Sep 6 from Newark Liberty Intl. Airport to Juan Santamaría Intl., returning Wed, Sep 10, priced at $290 found 6 days ago

Sat, Sep 6 - Wed, Sep 10

EWR

Newark Liberty Intl. Airport

SJO

Juan Santamaría Intl.

$292 Roundtrip, found 6 days ago

$292

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Sat, Sep 6 from Newark Liberty Intl. Airport to Juan Santamaría Intl., returning Wed, Sep 10, priced at $292 found 6 days ago

Mon, Oct 27 - Sun, Nov 2

JFK

John F. Kennedy Intl.

SJO

Juan Santamaría Intl.

$293 Roundtrip, found 16 hours ago

$293

Roundtrip

found 16 hours ago

Select JetBlue Airways flight, departing Mon, Oct 27 from John F. Kennedy Intl. to Juan Santamaría Intl., returning Sun, Nov 2, priced at $293 found 16 hours ago

Sat, Sep 6 - Wed, Sep 10

EWR

Newark Liberty Intl. Airport

SJO

Juan Santamaría Intl.

$295 Roundtrip, found 6 days ago

$295

Roundtrip

found 6 days ago

Select American Airlines flight, departing Sat, Sep 6 from Newark Liberty Intl. Airport to Juan Santamaría Intl., returning Wed, Sep 10, priced at $295 found 6 days ago

Sat, Sep 6 - Wed, Sep 10

EWR

Newark Liberty Intl. Airport

SJO

Juan Santamaría Intl.

$296 Roundtrip, found 6 days ago

$296

Roundtrip

found 6 days ago

Select American Airlines flight, departing Sat, Sep 6 from Newark Liberty Intl. Airport to Juan Santamaría Intl., returning Wed, Sep 10, priced at $296 found 6 days ago

Sat, Sep 6 - Wed, Sep 10

EWR

Newark Liberty Intl. Airport

SJO

Juan Santamaría Intl.

$299 Roundtrip, found 6 days ago

$299

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Sat, Sep 6 from Newark Liberty Intl. Airport to Juan Santamaría Intl., returning Wed, Sep 10, priced at $299 found 6 days ago

Mon, Aug 11 - Tue, Aug 19

JFK

John F. Kennedy Intl.

SJO

Juan Santamaría Intl.

$363 Roundtrip, found 3 days ago

$363

Roundtrip

found 3 days ago

Select avianca flight, departing Mon, Aug 11 from John F. Kennedy Intl. to Juan Santamaría Intl., returning Tue, Aug 19, priced at $363 found 3 days ago

Mon, Aug 11 - Tue, Aug 19

JFK

John F. Kennedy Intl.

SJO

Juan Santamaría Intl.

$378 Roundtrip, found 3 days ago

$378

Roundtrip

found 3 days ago

Select Copa flight, departing Mon, Aug 11 from John F. Kennedy Intl. to Juan Santamaría Intl., returning Tue, Aug 19, priced at $378 found 3 days ago

Sat, Nov 1 - Sat, Nov 1

LGA

LaGuardia

SJO

Juan Santamaría Intl.

$385 Roundtrip, found 16 hours ago

$385

Roundtrip

found 16 hours ago

Select Spirit Airlines flight, departing Sat, Nov 1 from LaGuardia to Juan Santamaría Intl., returning Sat, Nov 1, priced at $385 found 16 hours ago

Sun, May 25 - Thu, May 29

JFK

John F. Kennedy Intl.

SJO

Juan Santamaría Intl.

$391 Roundtrip, found 2 days ago

$391

Roundtrip

found 2 days ago

Select Air Canada flight, departing Sun, May 25 from John F. Kennedy Intl. to Juan Santamaría Intl., returning Thu, May 29, priced at $391 found 2 days ago

Fri, Jul 11 - Sat, Jul 19

EWR

Newark Liberty Intl. Airport

SJO

Juan Santamaría Intl.

$552 Roundtrip, found 4 days ago

$552

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Fri, Jul 11 from Newark Liberty Intl. Airport to Juan Santamaría Intl., returning Sat, Jul 19, priced at $552 found 4 days ago

Sat, Sep 6 - Wed, Sep 10

EWR

Newark Liberty Intl. Airport

SJO

Juan Santamaría Intl.

$810 Roundtrip, found 6 days ago

$810

Roundtrip

found 6 days ago

Select Aeromexico flight, departing Sat, Sep 6 from Newark Liberty Intl. Airport to Juan Santamaría Intl., returning Wed, Sep 10, priced at $810 found 6 days ago