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

Return flights

19 Oct - 29 Oct	Air China
20 Oct - 30 Oct	China Southern
02 Oct - 13 Oct	AirAsia
24 Oct - 07 Nov	China Southern
15 Oct - 20 Oct	Air China
16 Oct - 20 Oct	Air China
15 Oct - 29 Oct	China Southern
12 Oct - 02 Nov	China Southern
28 Oct - 08 Nov	China Southern
15 Oct - 19 Oct	Air China
01 Oct - 12 Oct	VietJet Air
22 Oct - 26 Oct	China Southern
01 Oct - 05 Oct	Emirates
11 Oct - 01 Nov	China Southern

Also check the deals for one-way flights from Hanoi to London in October.

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 October from 582€

Return flights