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

Return flights

04 Dec - 11 Dec	Volaris	direct
02 Dec - 08 Dec	Avianca
30 Dec - 05 Jan	Avianca
01 Dec - 08 Dec	Volaris	direct
01 Dec - 16 Dec	Viva
08 Dec - 16 Dec	Viva
26 Dec - 13 Jan	Viva
26 Dec - 10 Jan	Viva
08 Dec - 27 Dec	Viva
15 Dec - 30 Dec	Viva
01 Dec - 20 Dec	Viva
08 Dec - 20 Dec	Viva
15 Dec - 27 Dec	Viva

Also check the deals for one-way flights from Cancun 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 Cancun to San Jose in December from 164€

Return flights