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

Return flights

08 Dec - 13 Dec	Viva
01 Dec - 13 Dec	Viva
08 Dec - 20 Dec	Viva
01 Dec - 20 Dec	Viva
12 Dec - 20 Dec	Viva
04 Dec - 08 Dec	Copa
03 Dec - 10 Dec	Alaska Airlines
08 Dec - 27 Dec	Viva
08 Dec - 18 Dec	Copa
29 Dec - 10 Jan	Viva
16 Dec - 29 Dec	Copa
29 Dec - 09 Jan	Copa
19 Dec - 03 Jan	Viva
29 Dec - 03 Jan	Viva
31 Dec - 03 Jan	Copa
30 Dec - 03 Jan	Copa
18 Dec - 09 Jan	Avianca
23 Dec - 02 Jan	Avianca
24 Dec - 03 Jan	Copa
19 Dec - 10 Jan	Avianca

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

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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Cheapest return flights from Los Angeles to San Jose in December from 269€

Return flights