Cheapest return flights from Boston to San Jose in January from $243

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

Return flights

28 Jan - 07 Feb United
22 Jan - 27 Jan United
23 Jan - 28 Jan United
25 Jan - 03 Feb American Airlines
25 Jan - 29 Jan Spirit Airlines
25 Jan - 31 Jan Spirit Airlines
25 Jan - 09 Feb Spirit Airlines
06 Jan - 12 Jan jetBlue
13 Jan - 29 Jan Spirit Airlines
12 Jan - 29 Jan Spirit Airlines
09 Jan - 29 Jan Spirit Airlines
18 Jan - 29 Jan Spirit Airlines
14 Jan - 23 Jan United
31 Jan - 09 Feb Spirit Airlines
26 Jan - 09 Feb Spirit Airlines
13 Jan - 17 Feb Copa
25 Jan - 06 Feb Spirit Airlines
23 Jan - 09 Feb Spirit Airlines
28 Jan - 01 Feb American Airlines
25 Jan - 08 Feb Spirit Airlines

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

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