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

Return flights

05 Dec - 09 Dec	SWISS
05 Dec - 12 Dec	Lufthansa
04 Dec - 11 Dec	Lufthansa
06 Dec - 10 Dec	Lufthansa
31 Dec - 08 Jan	British Airways
05 Dec - 13 Dec	SWISS
01 Dec - 08 Dec	KLM
05 Dec - 08 Dec	KLM
30 Dec - 11 Jan	British Airways
03 Dec - 08 Dec	SWISS
10 Dec - 24 Dec	KLM
16 Dec - 17 Jan	Iberia
30 Dec - 12 Jan	Ryanair
23 Dec - 30 Dec	Azores Airlines
30 Dec - 10 Jan	Ryanair
17 Dec - 17 Jan	Azores Airlines
30 Dec - 06 Jan	British Airways
18 Dec - 09 Jan	Ryanair
25 Dec - 03 Jan	Vueling Airlines
29 Dec - 06 Jan	Ryanair

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 $569

Return flights