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

Return flights

04 Oct - 22 Oct	Air China
03 Oct - 16 Oct	Air China
03 Oct - 21 Oct	Air China
03 Oct - 11 Oct	Air China
03 Oct - 17 Oct	Air China
03 Oct - 15 Oct	Air China
03 Oct - 12 Oct	Air China
03 Oct - 14 Oct	Air China
03 Oct - 26 Oct	Air China
03 Oct - 19 Oct	Air China
15 Oct - 14 Nov	Air China
29 Oct - 11 Nov	Air China
22 Oct - 14 Nov	Air China
22 Oct - 12 Nov	Air China
05 Oct - 02 Nov	Air China
22 Oct - 03 Nov	Air China
22 Oct - 05 Nov	Air China
22 Oct - 13 Nov	Air China
22 Oct - 02 Nov	Air China
21 Oct - 06 Nov	Air China

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

Book a cheap hotel in Hanoi

Cheap car rent in Hanoi

Cheapest return flights from London to Hanoi in October from 377€

Return flights