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

Return flights

24 Dec - 07 Jan	Turkish Airlines
30 Dec - 09 Jan	Air China
25 Dec - 01 Jan	Air China
28 Dec - 11 Jan	Air China
24 Dec - 06 Jan	Air China
24 Dec - 31 Dec	China Eastern
29 Dec - 05 Jan	Air China
30 Dec - 06 Jan	Air China
26 Dec - 05 Jan	Air China
26 Dec - 04 Jan	Air China
26 Dec - 02 Jan	VietJet Air
24 Dec - 26 Dec	China Eastern

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 $643

Return flights