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

Return flights

05 Dec - 09 Dec	Viva
06 Dec - 09 Dec	Spirit Airlines
03 Dec - 09 Dec	Spirit Airlines
03 Dec - 08 Dec	Southwest Airlines
02 Dec - 09 Dec	Spirit Airlines
05 Dec - 23 Dec	Viva
06 Dec - 23 Dec	Spirit Airlines
09 Dec - 23 Dec	Spirit Airlines
03 Dec - 23 Dec	Spirit Airlines
05 Dec - 07 Dec	Viva
26 Dec - 05 Jan	Viva
16 Dec - 05 Jan	Spirit Airlines
20 Dec - 05 Jan	Spirit Airlines
21 Dec - 05 Jan	Spirit Airlines
17 Dec - 05 Jan	Spirit Airlines

Also check the deals for one-way flights from Las Vegas 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 Las Vegas to San Jose in December from 231€

Return flights