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

Return flights

12 Dec - 06 Jan	China Eastern
22 Dec - 18 Jan	China Eastern
08 Dec - 06 Jan	China Eastern
23 Dec - 19 Jan	Thai AirAsia
30 Dec - 14 Jan	Air China
09 Dec - 05 Jan	Air China
24 Dec - 06 Jan	Air China
28 Dec - 28 Jan	Air China
30 Dec - 12 Jan	Air China
30 Dec - 13 Jan	Air China
12 Dec - 23 Dec	Air China
25 Dec - 31 Dec	Air China
05 Dec - 31 Dec	Air China
07 Dec - 31 Dec	Air China
20 Dec - 23 Dec	Air China
18 Dec - 23 Dec	Air China
01 Dec - 08 Dec	Air China
15 Dec - 22 Dec	China Eastern
06 Dec - 30 Dec	Air China
03 Dec - 12 Dec	Turkish Airlines

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 $550

Return flights