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

Return flights

01 Dec - 11 Dec	British Airways
01 Dec - 31 Dec	British Airways
06 Dec - 12 Dec	KLM
03 Dec - 17 Dec	British Airways
01 Dec - 08 Dec	KLM
31 Dec - 08 Jan	British Airways
02 Dec - 16 Dec	Lufthansa
12 Dec - 23 Dec	SWISS
06 Dec - 07 Jan	Air Transat
10 Dec - 17 Dec	British Airways
29 Dec - 08 Jan	Ryanair
29 Dec - 10 Jan	Ryanair
30 Dec - 10 Jan	Ryanair
29 Dec - 11 Jan	Ryanair
26 Dec - 15 Jan	Ryanair
22 Dec - 06 Jan	Azores Airlines
25 Dec - 07 Jan	Air Transat
25 Dec - 01 Jan	Air Transat
14 Dec - 21 Dec	Ryanair
16 Dec - 22 Dec	Vueling Airlines

Also check the deals for one-way flights from Porto 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 Porto to Cancun in December from 531€

Return flights