Cheapest one-way flights from Boston to San Jose in January from $106

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

One-Way flights

01 Jan American Airlines
12 Jan Spirit Airlines
13 Jan Spirit Airlines
08 Jan Spirit Airlines
19 Jan Spirit Airlines
09 Jan Spirit Airlines
25 Jan Spirit Airlines
07 Jan Spirit Airlines
15 Jan Spirit Airlines
05 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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