Boston (BOS) to San José (SJO) flight deal from $139 USD in economy class – flightdeals.net

Home Premium Fare Deals About Pricing

United Airlines

UAUnited Airlines

One Way•Economy

Logan International Airport

Boston, United States

Juan Santamaría International Airport (SJO)

San José, Costa Rica

$278 USD

-50%$139 USD

Verified Mar 21, 2026 at 6:20 PM

March 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21$164 22$164 23$164 24$164 25$164 26$164 27$200 28$164 29$186 30$164 31$270 1$374 2$379 3$391 4$374 5$374

Fair Availability

31% of dates checked are available within 10% of the lowest price

Sunday, March 15th, 2026

No flight details available for this date.