Cheapest one-way flights from Boston to San Jose in January from $105

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

One-Way flights

26 Jan United
21 Jan Spirit Airlines
17 Jan Spirit Airlines
13 Jan Spirit Airlines
28 Jan Spirit Airlines
18 Jan Spirit Airlines
24 Jan Spirit Airlines
27 Jan Spirit Airlines
30 Jan Spirit Airlines
07 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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