Cheapest return flights from Boston to San Jose in December from 391€

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

Return flights

02 Dec - 12 Dec Spirit Airlines
02 Dec - 21 Dec Spirit Airlines
17 Dec - 13 Jan Spirit Airlines
14 Dec - 21 Dec Spirit Airlines
13 Dec - 21 Dec Spirit Airlines
11 Dec - 12 Dec Spirit Airlines
11 Dec - 21 Dec Spirit Airlines
11 Dec - 30 Dec Spirit Airlines
23 Dec - 30 Dec Spirit Airlines
17 Dec - 21 Dec Spirit Airlines
13 Dec - 30 Dec Spirit Airlines
23 Dec - 13 Jan Spirit Airlines
23 Dec - 10 Jan Spirit Airlines
23 Dec - 09 Jan Spirit Airlines
27 Dec - 13 Jan Spirit Airlines
27 Dec - 10 Jan Spirit Airlines
27 Dec - 09 Jan Spirit Airlines
23 Dec - 01 Jan Spirit Airlines
23 Dec - 02 Jan Spirit Airlines
13 Dec - 01 Jan Spirit Airlines

Also check the deals for one-way flights from Boston to San Jose in December.

Skyscanner

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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