Cheapest one-way flights from Boston to San Jose in January from 87€

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

One-Way flights

07 Jan Spirit Airlines
21 Jan Spirit Airlines
28 Jan Spirit Airlines
11 Jan United
31 Jan Spirit Airlines
24 Jan Spirit Airlines
27 Jan Spirit Airlines
12 Jan Spirit Airlines
06 Jan Spirit Airlines
10 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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