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

Return flights

01 Dec - 10 Dec	Iberia
06 Dec - 13 Dec	Iberia
10 Dec - 15 Dec	Aeromexico
29 Dec - 17 Jan	Iberia
30 Dec - 11 Jan	Viva
30 Dec - 12 Jan	Virgin Atlantic
31 Dec - 11 Jan	Virgin Atlantic
30 Dec - 10 Jan	Iberia
12 Dec - 21 Dec	Viva
16 Dec - 27 Dec	Air Canada
24 Dec - 07 Jan	Delta
17 Dec - 27 Dec	Air Canada
23 Dec - 06 Jan	Viva
16 Dec - 28 Dec	Air France
24 Dec - 05 Jan	Air Canada
23 Dec - 30 Dec	Virgin Atlantic
22 Dec - 05 Jan	Viva
19 Dec - 07 Jan	Aeromexico
22 Dec - 29 Dec	Emirates
19 Dec - 28 Dec	Emirates

Also check the deals for one-way flights from Mexico City to Lisbon 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 Lisbon in December from $679

Return flights