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 - 16 Dec	Viva
08 Dec - 16 Dec	Spirit Airlines
05 Dec - 09 Dec	Viva
05 Dec - 13 Dec	Viva
08 Dec - 13 Dec	Spirit Airlines
12 Dec - 13 Jan	Frontier Airlines
30 Dec - 13 Jan	Spirit Airlines
12 Dec - 16 Dec	Viva
12 Dec - 10 Jan	Frontier Airlines
30 Dec - 14 Jan	Spirit Airlines
30 Dec - 10 Jan	Spirit Airlines
23 Dec - 13 Jan	Spirit Airlines
20 Dec - 10 Jan	Spirit Airlines
23 Dec - 10 Jan	Spirit Airlines
23 Dec - 30 Dec	Frontier Airlines
08 Dec - 27 Dec	Spirit Airlines
05 Dec - 23 Dec	Viva
30 Dec - 17 Jan	Spirit Airlines
08 Dec - 23 Dec	Spirit Airlines
22 Dec - 10 Jan	Viva

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 $219

Return flights