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

Return flights

20 Sep - 11 Oct	China Eastern
23 Sep - 21 Oct	Air China
16 Sep - 05 Oct	Air China
19 Sep - 08 Oct	Air China
25 Sep - 09 Oct	Air China
26 Sep - 06 Oct	Air China
23 Sep - 14 Oct	Air China
30 Sep - 11 Oct	Air China
26 Sep - 10 Oct	Air China
27 Sep - 11 Oct	Air China
09 Sep - 25 Sep	Air China
05 Sep - 26 Sep	Air China
11 Sep - 21 Sep	Air China
07 Sep - 20 Sep	Air China
03 Sep - 16 Sep	Air China
01 Sep - 15 Sep	Air China
02 Sep - 16 Sep	Air China
01 Sep - 08 Sep	Air China
06 Sep - 20 Sep	Air China
05 Sep - 15 Sep	Air China

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 520€

Return flights