Boston to San Jose, Costa Rica $334 RT, Late Summer & Fall Travel

Fly from Boston to San Jose, Costa Rica for $334 round-trip on Avianca.

You can take this flight from late August through early December. Travel dates vary, but you'll find the best availability departing Monday, Wednesday, and Sundays. Fares will require a Sunday night stay unless you are leaving on a Sunday.

Searching on Avianca's website, I could find seats departing BOS on Wednesday, October 3, and returning from SJO on Sunday, October 7, 2018.

There is a full list of flight deals today from the Hub so make sure to have a look at our Boston (BOS) departure page.

If you need a place to stay along with this airfare deal, we've got a long list of hotels available for the mentioned dates on Hotelwatchdog.

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