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

Return flights

13 Oct - 19 Oct	China Southern
12 Oct - 19 Oct	China Southern
20 Oct - 22 Oct	China Southern
06 Oct - 22 Oct	British Airways
17 Oct - 19 Oct	China Southern
05 Oct - 15 Oct	Emirates
12 Oct - 18 Oct	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 $880

Return flights