EWR to SJO from $364 in economy

UAUnited Airlines

Round Trip•Economy

EWR

Newark Liberty Airport

Newark, United States

SJO

Juan Santamaría International Airport (SJO)

San José, Costa Rica

$581 USD

-37%$364 USD

Verified about 8 hours ago

September 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

31$396 1$396 2$374 3$421 4$398 5$374 6$374 7$426 8$374 9$378 10$378 11$374 12$378 13$398 14$374 15$468 16$390 17$368 18$383 19$468 20$421 21$368 22$368 23$383 24$368 25$368 26$368 27$368 28$368 29$368 30$390 1$368 2$368 3$368 4$368

Limited Availability

14% of dates checked are available within 10% of the lowest price

Friday, September 18th, 2026

6 round-trip options

Returning

Wed, Sep 23, 2026•5 Day Trip

$402 USD

Google Flights

Returning

Thu, Sep 24, 2026•6 Day Trip

$424 USD

Google Flights

Returning

Fri, Sep 25, 2026•7 Day Trip

$402 USD

Google Flights

Returning

Sat, Sep 26, 2026•8 Day Trip

$426 USD

Google Flights

Returning

Thu, Oct 1, 2026•13 Day Trip

$383 USD

Google Flights

Returning

Fri, Oct 2, 2026•14 Day Trip

$383 USD

Google Flights

Newark (EWR) to San José (SJO) flight deal in economy from $364

Newark Liberty Airport

Juan Santamaría International Airport (SJO)

September 2026

Friday, September 18th, 2026