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

Return flights

11 Dec - 06 Jan	China Eastern
17 Dec - 06 Jan	China Eastern
12 Dec - 06 Jan	China Eastern
13 Dec - 11 Jan	China Eastern
17 Dec - 08 Jan	China Eastern
16 Dec - 08 Jan	China Eastern
13 Dec - 09 Jan	China Eastern
10 Dec - 08 Jan	China Eastern
15 Dec - 21 Dec	China Eastern
14 Dec - 23 Dec	China Eastern
14 Dec - 21 Dec	China Eastern
15 Dec - 23 Dec	China Eastern
27 Dec - 16 Jan	China Eastern
06 Dec - 21 Dec	China Eastern
06 Dec - 25 Jan	China Eastern
04 Dec - 07 Dec	China Eastern
14 Dec - 31 Dec	China Eastern
06 Dec - 31 Dec	China Eastern
12 Dec - 14 Dec	Air China
15 Dec - 31 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 409€

Return flights