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

Return flights

26 Aug - 02 Sep	Air China
30 Aug - 05 Sep	Air China
30 Aug - 07 Sep	Air China
30 Aug - 08 Sep	Air China
30 Aug - 06 Sep	Air China
28 Aug - 05 Sep	Air China
26 Aug - 09 Sep	Air China
28 Aug - 03 Sep	Air China
28 Aug - 06 Sep	Air China
28 Aug - 07 Sep	Air China
23 Aug - 31 Aug	Air China
26 Aug - 29 Aug	Air China
24 Aug - 27 Aug	Air China
26 Aug - 30 Aug	Air China
22 Aug - 25 Aug	Wizz Air UK
27 Aug - 31 Aug	Wizz Air
19 Aug - 26 Aug	Vueling Airlines
19 Aug - 25 Aug	Vueling Airlines
18 Aug - 24 Aug	Wizz Air UK
18 Aug - 25 Aug	Wizz Air UK

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

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 August from 385€

Return flights