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

Return flights

14 Dec - 05 Jan	Air China
26 Dec - 07 Jan	Shenzhen Airlines
15 Dec - 31 Dec	Air China
20 Dec - 04 Jan	Shenzhen Airlines
12 Dec - 03 Jan	Shenzhen Airlines
18 Dec - 08 Jan	China Eastern
19 Dec - 28 Dec	Shenzhen Airlines
26 Dec - 02 Jan	China Southern
12 Dec - 26 Dec	Air China
10 Dec - 17 Dec	Air China
05 Dec - 12 Dec	Qatar Airways
26 Dec - 07 Jan	Vietnam Airlines	direct

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 581€

Return flights