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

Return flights

17 Dec - 22 Dec	Volaris
07 Dec - 10 Dec	Volaris
24 Dec - 28 Dec	Volaris
12 Dec - 28 Jan	Volaris
16 Dec - 23 Dec	Volaris Costa Rica
02 Dec - 09 Dec	Volaris Costa Rica
24 Dec - 01 Jan	Volaris	direct
02 Dec - 06 Dec	Volaris Costa Rica
11 Dec - 18 Dec	Copa
16 Dec - 25 Dec	Copa
10 Dec - 14 Dec	Volaris
03 Dec - 09 Dec	Copa
20 Dec - 09 Jan	Viva
30 Dec - 09 Jan	Viva
23 Dec - 09 Jan	Viva
30 Dec - 01 Jan	Copa
27 Dec - 09 Jan	Viva
30 Dec - 11 Jan	Viva
23 Dec - 11 Jan	Viva
27 Dec - 11 Jan	Viva

Also check the deals for one-way flights from San Jose to Cancun 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 San Jose to Cancun in December from $257

Return flights