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

Return flights

24 Sep - 01 Oct	SWISS
25 Sep - 03 Oct	SWISS
24 Sep - 03 Oct	SWISS
23 Sep - 03 Oct	SWISS
23 Sep - 01 Oct	SWISS
25 Sep - 15 Oct	SWISS
30 Sep - 20 Oct	SWISS
29 Sep - 05 Oct	SWISS
24 Sep - 08 Oct	SWISS
30 Sep - 06 Oct	SWISS
04 Sep - 11 Sep	Ryanair
03 Sep - 11 Sep	Ryanair
17 Sep - 22 Sep	Ryanair
22 Sep - 29 Sep	Ryanair
10 Sep - 22 Sep	Ryanair
11 Sep - 22 Sep	Ryanair
23 Sep - 30 Sep	British Airways
17 Sep - 24 Sep	Ryanair
03 Sep - 29 Sep	Ryanair
02 Sep - 17 Sep	Saudia

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Plaisance in September from 603€

Return flights