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

Return flights

24 Dec - 31 Dec	Copa
29 Dec - 31 Dec	Copa
24 Dec - 10 Jan	Copa
06 Dec - 18 Dec	Avianca
06 Dec - 08 Dec	Avianca
17 Dec - 21 Dec	Copa
09 Dec - 24 Dec	Copa
12 Dec - 16 Dec	Viva
06 Dec - 13 Dec	Avianca
12 Dec - 23 Dec	Viva
24 Dec - 01 Jan	Avianca
09 Dec - 23 Dec	Copa
18 Dec - 07 Jan	Copa
31 Dec - 04 Jan	Copa
29 Dec - 05 Jan	Copa
28 Dec - 13 Jan	Viva
29 Dec - 13 Jan	Viva
28 Dec - 10 Jan	Viva
22 Dec - 04 Jan	Copa
29 Dec - 10 Jan	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 204€

Return flights