AirHint found the following cheapest return flights from London (LGW) to Hanoi (HAN) in September 2026 (see full year).

Return flights

30 Sep - 11 Oct	Wizz Air UK
30 Sep - 14 Oct	Wizz Air UK
28 Sep - 11 Oct	Wizz Air UK
19 Sep - 03 Oct	China Eastern
21 Sep - 21 Oct	China Eastern
14 Sep - 28 Sep	Wizz Air UK
16 Sep - 28 Sep	Wizz Air UK
12 Sep - 29 Sep	Wizz Air UK
07 Sep - 21 Sep	Wizz Air
12 Sep - 22 Sep	Wizz Air UK
12 Sep - 26 Sep	Wizz Air UK
20 Sep - 07 Oct	China Eastern
25 Sep - 03 Oct	Wizz Air UK
07 Sep - 27 Sep	Wizz Air UK
09 Sep - 16 Sep	Wizz Air UK
02 Sep - 21 Sep	Wizz Air UK
09 Sep - 20 Sep	Wizz Air UK
26 Sep - 11 Oct	Wizz Air
20 Sep - 04 Oct	China Eastern
21 Sep - 04 Oct	Wizz Air

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

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 September from 519€

Return flights