Boston to San Jose, Costa Rica $342 round-trip on Southwest

Fly from Boston to San Jose, Costa Rica for $342 round-trip on Southwest.

New service to SJO begins on March 7. Seen below, we found seats departing BOS on Tuesday, March 17, returning from SJO on Tuesday, March 24. Flights connect in Baltimore BWI.

Other dates are also available for travel on Mondays through Wednesdays through May.

For booking info, see our Fare Details.

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