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

Return flights

15 Sep - 13 Oct	KLM
22 Sep - 13 Oct	KLM
23 Sep - 13 Oct	KLM
10 Sep - 30 Sep	KLM
29 Sep - 16 Oct	KLM
16 Sep - 30 Sep	KLM
29 Sep - 09 Oct	KLM
22 Sep - 30 Sep	KLM
23 Sep - 30 Sep	KLM
26 Sep - 14 Oct	KLM
23 Sep - 14 Oct	KLM
17 Sep - 29 Oct	KLM
22 Sep - 29 Oct	KLM
19 Sep - 30 Sep	KLM
18 Sep - 16 Oct	KLM
20 Sep - 30 Sep	KLM
15 Sep - 21 Sep	KLM
07 Sep - 22 Sep	KLM
09 Sep - 30 Sep	KLM
10 Sep - 28 Sep	KLM

Also check the deals for one-way flights from London to Kuala Lumpur 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 Kuala Lumpur in September from $717

Return flights