Cheapest one-way flights from Boston to San Jose in December from 90€

AirHint found the following cheapest one-way flights from Boston (BOS) to San Jose (SJO) in December 2025 (see full year).

One-Way flights

10 Dec Spirit Airlines
05 Dec United
13 Dec Spirit Airlines
07 Dec Spirit Airlines
14 Dec Spirit Airlines
02 Dec Spirit Airlines
09 Dec Spirit Airlines
11 Dec Spirit Airlines
03 Dec Spirit Airlines
16 Dec Spirit Airlines

Also check the deals for return flights from Boston to San Jose in December.

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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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