AirHint found the following cheapest return flights from Boston (BOS) to San Jose (SJO) in June 2026 (see full year).

Return flights

22 Jun - 30 Jun	Spirit Airlines
13 Jun - 22 Jun	United
22 Jun - 29 Jun	Avianca
28 Jun - 11 Jul	Avianca
19 Jun - 27 Jun	Avianca
20 Jun - 27 Jun	Avianca
13 Jun - 30 Jun	Spirit Airlines
20 Jun - 30 Jun	Spirit Airlines
14 Jun - 30 Jun	Spirit Airlines
19 Jun - 30 Jun	Spirit Airlines
28 Jun - 30 Jun	Spirit Airlines
22 Jun - 11 Jul	Spirit Airlines

Also check the deals for one-way flights from Boston to San Jose in June.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Boston to San Jose in June from 407€

Return flights