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

Return flights

29 Sep - 06 Oct	ITA Airways
26 Sep - 05 Oct	Kenya Airways
26 Sep - 06 Oct	Kenya Airways
24 Sep - 05 Oct	Kenya Airways
08 Sep - 22 Sep	Lufthansa
30 Sep - 10 Oct	SWISS
11 Sep - 18 Sep	KLM
09 Sep - 25 Sep	Lufthansa
30 Sep - 05 Oct	SWISS
07 Sep - 18 Sep	KLM
23 Sep - 30 Sep	SWISS
30 Sep - 22 Oct	SWISS
25 Sep - 17 Oct	SWISS
29 Sep - 24 Oct	SWISS
11 Sep - 19 Sep	ITA Airways
15 Sep - 22 Sep	Lufthansa
23 Sep - 28 Sep	SWISS
30 Sep - 08 Oct	SWISS
10 Sep - 17 Sep	ITA Airways
11 Sep - 24 Sep	ITA Airways

Also check the deals for one-way flights from London to Plaisance in September.

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 September from $1165

Return flights