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

Return flights

30 Sep - 13 Oct	Kenya Airways
30 Sep - 09 Oct	Kenya Airways
15 Sep - 25 Sep	ITA Airways
23 Sep - 30 Sep	KLM
08 Sep - 22 Sep	KLM
08 Sep - 15 Sep	KLM
17 Sep - 25 Sep	ITA Airways
17 Sep - 21 Sep	KLM
29 Sep - 08 Oct	KLM
18 Sep - 25 Sep	KLM
19 Sep - 02 Oct	Lufthansa
08 Sep - 11 Sep	Lufthansa
08 Sep - 20 Sep	KLM
27 Sep - 05 Oct	KLM
05 Sep - 20 Sep	Lufthansa

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 $1086

Return flights