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

Return flights

25 Sep - 19 Oct	SWISS
23 Sep - 28 Sep	ITA Airways
23 Sep - 19 Oct	SWISS
25 Sep - 17 Oct	SWISS
23 Sep - 05 Oct	SWISS
23 Sep - 08 Oct	SWISS
30 Sep - 05 Oct	SWISS
28 Sep - 26 Oct	SWISS
28 Sep - 05 Oct	SWISS
24 Sep - 28 Sep	Lufthansa
17 Sep - 25 Sep	Kenya Airways
26 Sep - 06 Oct	Kenya Airways
26 Sep - 05 Oct	Kenya Airways
07 Sep - 18 Sep	KLM
26 Sep - 28 Sep	KLM
25 Sep - 30 Sep	SWISS
10 Sep - 22 Sep	KLM
17 Sep - 24 Sep	SWISS
05 Sep - 18 Sep	Kenya Airways
15 Sep - 25 Sep	Kenya 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 770€

Return flights