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

Return flights

06 Oct - 13 Oct	Ryanair
06 Oct - 15 Oct	Ryanair
08 Oct - 15 Oct	Ryanair
01 Oct - 13 Oct	Ryanair
01 Oct - 15 Oct	Ryanair
13 Oct - 15 Oct	Ryanair
02 Oct - 13 Oct	Ryanair
20 Oct - 23 Oct	Ryanair
05 Oct - 13 Oct	Ryanair
08 Oct - 05 Nov	Ryanair
08 Oct - 22 Oct	Ryanair
20 Oct - 24 Nov	Ryanair
20 Oct - 03 Nov	Ryanair
01 Oct - 24 Nov	Ryanair
16 Oct - 06 Nov	Ryanair
20 Oct - 10 Nov	Ryanair
19 Oct - 01 Nov	Ryanair
18 Oct - 01 Nov	Ryanair
20 Oct - 02 Nov	Ryanair
12 Oct - 03 Nov	Ryanair

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.

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Cheapest return flights from London to Hanoi in October from 626€

Return flights