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

Return flights

28 Dec - 07 Jan	Hainan Airlines
28 Dec - 14 Jan	Hainan Airlines
29 Dec - 07 Jan	China Eastern
29 Dec - 11 Jan	China Eastern
27 Dec - 06 Jan	Shenzhen Airlines
28 Dec - 05 Jan	Hainan Airlines
31 Dec - 07 Jan	Shenzhen Airlines
30 Dec - 19 Jan	China Eastern
31 Dec - 19 Jan	China Eastern
30 Dec - 06 Jan	Turkish Airlines
28 Dec - 29 Dec	China Eastern
27 Dec - 28 Dec	Cathay Pacific
28 Dec - 29 Dec	Vietnam Airlines	direct
28 Dec - 28 Dec	Emirates
28 Dec - 28 Dec	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 522€

Return flights