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

Return flights

16 Dec - 14 Jan	Air China
16 Dec - 11 Jan	Air China
14 Dec - 11 Jan	China Eastern
10 Dec - 13 Jan	China Eastern
13 Dec - 15 Jan	Air China
28 Dec - 11 Jan	China Eastern
18 Dec - 15 Jan	Air China
18 Dec - 20 Jan	Air China
18 Dec - 14 Jan	Air China
13 Dec - 18 Jan	China Eastern
12 Dec - 31 Dec	China Eastern
13 Dec - 31 Dec	China Eastern
09 Dec - 16 Dec	Air China
15 Dec - 31 Dec	China Eastern
11 Dec - 31 Dec	China Eastern
08 Dec - 09 Dec	China Eastern
12 Dec - 22 Dec	China Eastern
10 Dec - 22 Dec	China Eastern
13 Dec - 30 Dec	China Eastern
13 Dec - 22 Dec	China Eastern

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 399€

Return flights