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

Return flights

02 Dec - 12 Dec	Aeromexico
01 Dec - 11 Dec	Viva
06 Dec - 17 Dec	Iberia
03 Dec - 09 Dec	Volaris
07 Dec - 14 Dec	Volaris
25 Dec - 10 Jan	Volaris
03 Dec - 14 Dec	Volaris
29 Dec - 10 Jan	Volaris
24 Dec - 07 Jan	Volaris
23 Dec - 11 Jan	Aeromexico
14 Dec - 22 Dec	Iberia
28 Dec - 10 Jan	Volaris
11 Dec - 29 Dec	Volaris
10 Dec - 30 Dec	Volaris
12 Dec - 29 Dec	Volaris
26 Dec - 10 Jan	Volaris
27 Dec - 10 Jan	Volaris
16 Dec - 06 Jan	Aeromexico
22 Dec - 11 Jan	Aeromexico
30 Dec - 05 Jan	Aeromexico

Also check the deals for one-way flights from Mexico City to Porto 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 Mexico City to Porto in December from 757€

Return flights