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

Return flights

23 Oct - 27 Oct	China Southern
10 Oct - 19 Oct	Shenzhen Airlines
13 Oct - 22 Oct	Shenzhen Airlines
22 Oct - 26 Oct	Shenzhen Airlines
20 Oct - 30 Oct	HK Express
15 Oct - 28 Oct	China Southern
13 Oct - 19 Oct	China Southern
13 Oct - 26 Oct	China Southern
13 Oct - 22 Oct	Vietnam Airlines	direct

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 554€

Return flights