AirHint found the following cheapest return flights from Mexico City (MEX) to London (LHR) in December 2026 (see full year).

Return flights

01 Dec - 10 Dec	Iberia
05 Dec - 16 Dec	Air Canada
05 Dec - 19 Dec	Iberia
12 Dec - 04 Jan	Lufthansa
20 Dec - 31 Dec	Lufthansa
15 Dec - 31 Dec	Lufthansa
17 Dec - 04 Jan	Lufthansa
20 Dec - 03 Jan	Lufthansa
19 Dec - 26 Dec	Lufthansa
20 Dec - 27 Dec	Lufthansa
17 Dec - 03 Jan	Lufthansa
12 Dec - 02 Jan	Lufthansa
21 Dec - 02 Jan	Lufthansa
19 Dec - 02 Jan	Iberia
24 Dec - 26 Dec	Iberia
17 Dec - 02 Jan	Lufthansa
23 Dec - 27 Dec	Iberia
18 Dec - 01 Jan	Lufthansa
19 Dec - 26 Dec	British Airways	direct

Also check the deals for one-way flights from Mexico City to London 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 London in December from 800€

Return flights