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

Return flights

22 Dec - 02 Jan	China Eastern
15 Dec - 05 Jan	China Eastern
20 Dec - 30 Dec	Turkish Airlines
26 Dec - 02 Jan	China Eastern
20 Dec - 03 Jan	China Eastern
21 Dec - 31 Dec	Air China
14 Dec - 04 Jan	Air China
22 Dec - 04 Jan	Air China
13 Dec - 10 Jan	Air China
03 Dec - 21 Dec	Air China
02 Dec - 20 Dec	Air China
13 Dec - 06 Jan	British Airways
14 Dec - 07 Jan	British Airways

Also check the deals for one-way flights from Hanoi 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 Hanoi to London in December from 524€

Return flights