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

Return flights

11 Dec - 23 Dec	Air Canada
03 Dec - 24 Dec	Air Canada
11 Dec - 18 Dec	Air Canada
05 Dec - 26 Dec	Air Canada
16 Dec - 13 Jan	Air Canada
16 Dec - 12 Jan	Air Canada
08 Dec - 06 Jan	Air Canada
15 Dec - 08 Jan	United
29 Dec - 07 Jan	Air Canada
19 Dec - 10 Jan	Arajet
08 Dec - 01 Jan	Air France
14 Dec - 21 Dec	Air Canada
16 Dec - 31 Dec	Viva
12 Dec - 01 Jan	Avianca
09 Dec - 19 Dec	Air Canada
16 Dec - 01 Jan	Viva
18 Dec - 09 Jan	Viva
21 Dec - 26 Dec	Viva
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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Cheapest return flights from Mexico City to Lisbon in December from 652€

Return flights