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

Return flights

16 Dec - 11 Jan	Air China
10 Dec - 07 Jan	HK Express
11 Dec - 24 Dec	Air China
26 Dec - 07 Jan	SWISS
26 Dec - 08 Jan	SWISS
22 Dec - 04 Jan	HK Express
09 Dec - 04 Jan	HK Express
15 Dec - 17 Jan	China Eastern
15 Dec - 06 Jan	China Eastern
26 Dec - 06 Jan	SWISS
16 Dec - 06 Jan	Air China
02 Dec - 10 Dec	China Eastern
06 Dec - 12 Dec	Air China
05 Dec - 08 Dec	HK Express
05 Dec - 12 Dec	HK Express
11 Dec - 31 Dec	Air China
08 Dec - 28 Dec	China Eastern
15 Dec - 24 Dec	China Eastern
26 Dec - 31 Dec	Vietnam Airlines
14 Dec - 26 Dec	Air China

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 463€

Return flights