Cheapest return flights from Boston to San Jose in May from $291

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

Return flights

18 May - 23 May Avianca
04 May - 09 May Spirit Airlines
16 May - 27 May Spirit Airlines
04 May - 06 May Spirit Airlines
04 May - 12 May Spirit Airlines
06 May - 12 May Spirit Airlines
12 May - 27 May Spirit Airlines
16 May - 02 Jun Spirit Airlines
27 May - 02 Jun Spirit Airlines
04 May - 08 May Spirit Airlines
04 May - 15 May Spirit Airlines
06 May - 15 May Spirit Airlines
30 May - 02 Jun Spirit Airlines
18 May - 02 Jun Spirit Airlines
15 May - 02 Jun Spirit Airlines
23 May - 02 Jun Spirit Airlines
21 May - 02 Jun Spirit Airlines
24 May - 02 Jun Spirit Airlines
27 May - 08 Jun Spirit Airlines
30 May - 08 Jun Spirit Airlines

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

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