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

Return flights

31 Dec - 28 Jan	SWISS
31 Dec - 25 Jan	SWISS
31 Dec - 21 Jan	SWISS
31 Dec - 19 Jan	SWISS
31 Dec - 16 Jan	SWISS
29 Dec - 30 Jan	Lufthansa
30 Dec - 22 Jan	Air India
30 Dec - 20 Jan	Air India
30 Dec - 27 Jan	Air India
31 Dec - 18 Jan	SWISS
10 Dec - 14 Dec	SWISS
09 Dec - 24 Dec	SWISS
09 Dec - 26 Dec	SWISS
07 Dec - 24 Dec	SWISS
09 Dec - 16 Dec	Air France
09 Dec - 23 Dec	Air France
11 Dec - 26 Dec	SWISS
11 Dec - 24 Dec	SWISS
10 Dec - 17 Dec	SWISS
11 Dec - 21 Dec	SWISS

Also check the deals for one-way flights from London to Plaisance 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 Plaisance in December from 689€

Return flights