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

Return flights

19 Dec - 31 Dec	Air China
15 Dec - 24 Dec	Air China
15 Dec - 03 Jan	Air China
19 Dec - 03 Jan	Air China
13 Dec - 10 Jan	Etihad Airways
24 Dec - 07 Jan	Air China
22 Dec - 05 Jan	China Southern
24 Dec - 04 Jan	Air China
22 Dec - 02 Jan	Air China
23 Dec - 06 Jan	China Southern
26 Dec - 02 Jan	China Southern
23 Dec - 03 Jan	China Southern
08 Dec - 29 Dec	China Southern
12 Dec - 26 Dec	Air China
01 Dec - 10 Dec	Qatar Airways
04 Dec - 12 Dec	Qatar Airways
04 Dec - 09 Dec	China Southern
07 Dec - 15 Dec	Qatar Airways
20 Dec - 30 Dec	China Southern
19 Dec - 27 Dec	China Southern

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 $757

Return flights