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
15 Dec - 20 Dec	Viva
08 Dec - 15 Dec	Viva
01 Dec - 15 Dec	Viva
12 Dec - 15 Dec	Viva
01 Dec - 08 Dec	Viva
15 Dec - 03 Jan	Viva
24 Dec - 14 Jan	Copa
26 Dec - 10 Jan	Viva
25 Dec - 08 Jan	United
26 Dec - 16 Jan	Viva
27 Dec - 07 Jan	Avianca
12 Dec - 02 Jan	Viva
12 Dec - 04 Jan	Spirit Airlines
15 Dec - 02 Jan	Viva
15 Dec - 05 Jan	Viva

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 249€

Return flights