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

Return flights

13 Dec - 31 Dec	Turkish Airlines
23 Dec - 30 Dec	Air China
24 Dec - 31 Dec	Air China
03 Dec - 30 Dec	Air China
01 Dec - 29 Dec	Air China
14 Dec - 04 Jan	Air China
26 Dec - 05 Jan	Air China
15 Dec - 04 Jan	Air China
17 Dec - 04 Jan	Air China
22 Dec - 31 Dec	Air China
20 Dec - 31 Dec	Air China
26 Dec - 31 Dec	Air China
20 Dec - 30 Dec	Air China
24 Dec - 30 Dec	Air China
28 Dec - 05 Jan	Air China
24 Dec - 09 Jan	China Southern
21 Dec - 14 Jan	China Southern
23 Dec - 02 Jan	Air China
20 Dec - 02 Jan	Air China
28 Dec - 04 Jan	Air China

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 $669

Return flights