Cheapest one-way flights from Boston to San Jose in January from $112

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

One-Way flights

14 Jan Spirit Airlines
24 Jan Spirit Airlines
26 Jan Spirit Airlines
29 Jan Spirit Airlines
08 Jan Spirit Airlines
17 Jan jetBlue
11 Jan Spirit Airlines
07 Jan Spirit Airlines
09 Jan Spirit Airlines
03 Jan Spirit Airlines

Also check the deals for return flights from Boston to San Jose in January.

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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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