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	Austrian Airlines
24 Dec - 12 Jan	SWISS
25 Dec - 20 Jan	Kenya Airways
24 Dec - 31 Dec	SWISS
03 Dec - 27 Jan	SWISS
05 Dec - 27 Jan	SWISS
25 Dec - 15 Jan	Kenya Airways
23 Dec - 19 Jan	Kenya Airways
24 Dec - 04 Jan	SWISS
23 Dec - 12 Jan	Kenya Airways
24 Dec - 06 Jan	SWISS
16 Dec - 31 Dec	Kenya Airways
03 Dec - 31 Dec	SWISS
24 Dec - 30 Dec	SWISS
13 Dec - 31 Dec	SWISS
05 Dec - 31 Dec	SWISS
05 Dec - 09 Dec	SWISS
07 Dec - 31 Dec	SWISS
02 Dec - 31 Dec	Kenya Airways
04 Dec - 31 Dec	Kenya Airways

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 550€

Return flights