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

Return flights

21 Dec - 31 Dec	Air China
21 Dec - 04 Jan	Air China
20 Dec - 03 Jan	Air China
19 Dec - 04 Jan	Air China
19 Dec - 02 Jan	Air China
10 Dec - 24 Dec	Air China
26 Dec - 14 Jan	China Southern
08 Dec - 20 Dec	Emirates
09 Dec - 23 Dec	China Southern
26 Dec - 14 Jan	Vietnam Airlines	direct
07 Dec - 19 Dec	Air China
01 Dec - 13 Dec	Turkish Airlines
19 Dec - 04 Jan	Vietnam Airlines	direct
21 Dec - 04 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 $706

Return flights