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

Return flights

05 Dec - 18 Dec	Hainan Airlines
05 Dec - 11 Dec	Hainan Airlines
07 Dec - 25 Dec	Hainan Airlines
07 Dec - 21 Dec	Hainan Airlines
07 Dec - 10 Jan	Hainan Airlines
07 Dec - 14 Dec	Hainan Airlines
05 Dec - 11 Jan	Hainan Airlines
05 Dec - 21 Dec	Hainan Airlines
02 Dec - 09 Dec	Air China
02 Dec - 10 Dec	Air China
05 Dec - 19 Dec	Shenzhen Airlines
05 Dec - 22 Dec	Shenzhen Airlines
01 Dec - 29 Jan	Air China
03 Dec - 31 Jan	Air China
28 Dec - 10 Jan	Hainan Airlines
26 Dec - 07 Jan	Air China
09 Dec - 21 Jan	Etihad Airways
31 Dec - 22 Jan	Etihad Airways
31 Dec - 23 Jan	Etihad Airways
25 Dec - 31 Jan	Air China

Also check the deals for one-way flights from London to Kuala Lumpur in December.

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 December from 443€

Return flights