Cheapest one-way flights from Boston to San Jose in January from 86€

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

One-Way flights

15 Jan Spirit Airlines
20 Jan Spirit Airlines
18 Jan Spirit Airlines
14 Jan Spirit Airlines
12 Jan Spirit Airlines
29 Jan Spirit Airlines
09 Jan Spirit Airlines
23 Jan Frontier Airlines
17 Jan Spirit Airlines
11 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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