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

Return flights

29 Dec - 31 Dec	Copa
06 Dec - 18 Dec	Avianca
06 Dec - 08 Dec	Avianca
11 Dec - 15 Dec	Copa
24 Dec - 31 Dec	Copa
12 Dec - 16 Dec	Viva
11 Dec - 16 Dec	Viva
12 Dec - 23 Dec	Viva
26 Dec - 10 Jan	Copa
11 Dec - 23 Dec	Viva
05 Dec - 09 Dec	Viva
26 Dec - 09 Jan	Copa
25 Dec - 02 Jan	Copa
27 Dec - 05 Jan	Copa
29 Dec - 13 Jan	Viva
28 Dec - 13 Jan	Viva
26 Dec - 02 Jan	Copa
29 Dec - 10 Jan	Viva
28 Dec - 10 Jan	Viva
21 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 $273

Return flights