AirHint found the following cheapest return flights from Hong Kong (HKG) to London (LHR) in December 2025 (see full year).

Return flights

26 Dec - 29 Jan	Lufthansa
26 Dec - 08 Jan	Lufthansa
26 Dec - 09 Jan	Lufthansa
04 Dec - 09 Jan	Royal Brunei
29 Dec - 12 Jan	Lufthansa
07 Dec - 02 Jan	Turkish Airlines
07 Dec - 03 Jan	Turkish Airlines
16 Dec - 03 Jan	Air China
17 Dec - 30 Dec	Air China
16 Dec - 30 Dec	Air China
16 Dec - 23 Dec	Air China
04 Dec - 30 Dec	Air China
06 Dec - 03 Jan	Air China
12 Dec - 03 Jan	Air China
05 Dec - 30 Dec	Air China
13 Dec - 30 Dec	Air China
06 Dec - 27 Dec	Air China
13 Dec - 23 Dec	Air China
08 Dec - 12 Dec	Turkish Airlines
01 Dec - 15 Dec	Turkish Airlines

Also check the deals for one-way flights from Hong Kong to London 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 Hong Kong to London in December from $563

Return flights