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

Return flights

11 Dec - 03 Jan	Turkish Airlines
16 Dec - 07 Jan	Air China
01 Dec - 15 Dec	Turkish Airlines
03 Dec - 10 Dec	Turkish Airlines
01 Dec - 08 Dec	Turkish Airlines
06 Dec - 13 Dec	Turkish Airlines
13 Dec - 03 Jan	Turkish Airlines
26 Dec - 10 Jan	SWISS
26 Dec - 05 Jan	SWISS
01 Dec - 09 Dec	Turkish Airlines
13 Dec - 28 Dec	Air China
27 Dec - 04 Jan	Air China
18 Dec - 24 Dec	Air China
27 Dec - 27 Jan	Qatar Airways
26 Dec - 04 Jan	SWISS
23 Dec - 10 Jan	Emirates
23 Dec - 30 Dec	Qatar Airways
25 Dec - 31 Dec	Air China
25 Dec - 04 Jan	Air China
18 Dec - 25 Dec	Emirates

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 $566

Return flights