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

Return flights

30 Dec - 01 Jan	Volaris El Salvador
08 Dec - 13 Dec	Viva
01 Dec - 06 Dec	Viva
01 Dec - 13 Dec	Viva
08 Dec - 20 Dec	Viva
01 Dec - 20 Dec	Viva
15 Dec - 20 Dec	Viva
12 Dec - 20 Dec	Viva
03 Dec - 14 Dec	Volaris El Salvador
14 Dec - 22 Dec	Volaris
29 Dec - 10 Jan	Viva
13 Dec - 11 Jan	Copa
26 Dec - 10 Jan	Viva
03 Dec - 14 Dec	Alaska Airlines	direct
15 Dec - 03 Jan	Viva
30 Dec - 10 Jan	Copa
30 Dec - 07 Jan	Copa
13 Dec - 10 Jan	Copa
23 Dec - 07 Jan	Volaris
28 Dec - 02 Jan	Volaris

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 $317

Return flights