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

Return flights

01 Dec - 13 Dec	Lufthansa
10 Dec - 10 Jan	Lufthansa
08 Dec - 13 Dec	Lufthansa
02 Dec - 16 Dec	Lufthansa
01 Dec - 15 Dec	Lufthansa
10 Dec - 24 Dec	Lufthansa
10 Dec - 07 Jan	Lufthansa
05 Dec - 14 Dec	KLM
03 Dec - 17 Dec	British Airways
16 Dec - 06 Jan	Lufthansa
17 Dec - 07 Jan	Lufthansa
29 Dec - 07 Jan	Lufthansa
10 Dec - 09 Jan	KLM
14 Dec - 07 Jan	Lufthansa
11 Dec - 21 Dec	Lufthansa
11 Dec - 07 Jan	Lufthansa
05 Dec - 02 Jan	KLM
12 Dec - 26 Dec	KLM
23 Dec - 07 Jan	KLM
16 Dec - 31 Dec	Lufthansa

Also check the deals for one-way flights from London 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.

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Cheapest return flights from London to Mexico City in December from $841

Return flights