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

Return flights

03 Dec - 08 Dec	Lufthansa
09 Dec - 12 Jan	United
24 Dec - 29 Jan	Air Canada
24 Dec - 24 Jan	Air Canada
24 Dec - 25 Jan	Air Canada
24 Dec - 28 Jan	Air Canada
04 Dec - 15 Dec	United
12 Dec - 09 Jan	United
14 Dec - 09 Jan	United
10 Dec - 10 Jan	United
15 Dec - 08 Jan	United
02 Dec - 07 Dec	United
24 Dec - 26 Jan	United
25 Dec - 31 Dec	United
03 Dec - 16 Dec	United
29 Dec - 30 Dec	Finnair
28 Dec - 28 Dec	Air France
10 Dec - 18 Dec	Air Canada
27 Dec - 27 Dec	Iberia

Also check the deals for one-way flights from Lisbon to Mexico City 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 Mexico City

Cheap car rent in Mexico City

Cheapest return flights from Lisbon to Mexico City in December from $755

Return flights