Cheapest one-way flights from Boston to San Jose in January from $90

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

One-Way flights

22 Jan Spirit Airlines
23 Jan Spirit Airlines
18 Jan United
14 Jan Spirit Airlines
26 Jan Spirit Airlines
16 Jan Spirit Airlines
11 Jan Spirit Airlines
20 Jan Copa
27 Jan Copa
28 Jan Copa

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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