AirHint found the following cheapest return flights from Plaisance (MRU) to London (LHR) in December 2025 (see full year).

Return flights

10 Dec - 22 Jan	SWISS
10 Dec - 30 Jan	SWISS
03 Dec - 27 Jan	SWISS
26 Dec - 16 Jan	SWISS
17 Dec - 24 Jan	SWISS
14 Dec - 18 Jan	SWISS
25 Dec - 01 Jan	Kenya Airways
25 Dec - 31 Jan	Kenya Airways
10 Dec - 10 Jan	SWISS
05 Dec - 27 Jan	SWISS
01 Dec - 14 Dec	Lufthansa
24 Dec - 30 Dec	SWISS
08 Dec - 29 Dec	Lufthansa
14 Dec - 29 Dec	SWISS
08 Dec - 22 Dec	Lufthansa
02 Dec - 03 Dec	Emirates
13 Dec - 31 Dec	Lufthansa
10 Dec - 28 Dec	SWISS
16 Dec - 26 Dec	Kenya Airways
12 Dec - 26 Dec	SWISS

Also check the deals for one-way flights from Plaisance 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 Plaisance to London in December from $618

Return flights