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

Return flights

12 Oct - 19 Oct	China Southern
13 Oct - 29 Oct	Air China
06 Oct - 13 Oct	Air China
08 Oct - 22 Oct	Air China
26 Oct - 10 Nov	Air China
17 Oct - 26 Oct	Air China
15 Oct - 09 Nov	Air China
09 Oct - 16 Oct	China Eastern
07 Oct - 14 Oct	Air China
03 Oct - 05 Oct	China Southern
03 Oct - 10 Oct	Sichuan Airlines
08 Oct - 15 Oct	Air China
23 Oct - 30 Nov	Air China
15 Oct - 08 Nov	Air China
27 Oct - 23 Nov	British Airways
15 Oct - 06 Nov	British Airways

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 $649

Return flights