Cheapest return flights from San Francisco to San Jose in December from 351€

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

Return flights

02 Dec - 08 Dec Frontier Airlines
01 Dec - 16 Dec Frontier Airlines
10 Dec - 14 Dec Copa
01 Dec - 08 Dec Frontier Airlines
01 Dec - 15 Dec Frontier Airlines
15 Dec - 22 Dec Frontier Airlines
15 Dec - 23 Dec Frontier Airlines
01 Dec - 11 Dec Frontier Airlines
06 Dec - 10 Dec Alaska Airlines
11 Dec - 14 Dec Copa
29 Dec - 07 Jan Frontier Airlines
30 Dec - 13 Jan United
25 Dec - 31 Jan Frontier Airlines
31 Dec - 05 Jan Avianca
25 Dec - 05 Jan Frontier Airlines
18 Dec - 01 Jan Frontier Airlines
27 Dec - 04 Jan Frontier Airlines
26 Dec - 04 Jan Frontier Airlines
22 Dec - 02 Jan Frontier Airlines
25 Dec - 02 Jan Frontier Airlines

Also check the deals for one-way flights from San Francisco 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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