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

Return flights

15 Dec - 10 Jan	Copa
26 Dec - 05 Jan	Copa
05 Dec - 13 Dec	Spirit Airlines
31 Dec - 13 Jan	Spirit Airlines
31 Dec - 08 Jan	Spirit Airlines
31 Dec - 12 Jan	Spirit Airlines
26 Dec - 13 Jan	Spirit Airlines
26 Dec - 08 Jan	Spirit Airlines
31 Dec - 07 Jan	Spirit Airlines
29 Dec - 13 Jan	Spirit Airlines
29 Dec - 08 Jan	Spirit Airlines
07 Dec - 27 Dec	Spirit Airlines
12 Dec - 27 Dec	Spirit Airlines
14 Dec - 27 Dec	Spirit Airlines
26 Dec - 27 Dec	Spirit Airlines
19 Dec - 27 Dec	Spirit Airlines

Also check the deals for one-way flights from San Juan 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 Juan to Cancun in December from 219€

Return flights