AirHint found the following cheapest return flights from London (LCY) to Mahe (SEZ) in September 2026 (see full year).

Return flights

21 Sep - 03 Oct	ITA Airways
19 Sep - 28 Sep	Kenya Airways
11 Sep - 19 Sep	ITA Airways
14 Sep - 28 Sep	KLM
19 Sep - 29 Sep	Kenya Airways
18 Sep - 30 Sep	KLM
10 Sep - 24 Sep	Aer Lingus
08 Sep - 17 Sep	Lufthansa
04 Sep - 16 Sep	Lufthansa
17 Sep - 28 Sep	SWISS
05 Sep - 16 Sep	SWISS
17 Sep - 03 Oct	KLM

Also check the deals for one-way flights from London to Mahe 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 Mahe in September from 839€

Return flights