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

Return flights

08 Sep - 28 Sep	Air China
07 Sep - 14 Sep	China Eastern
06 Sep - 15 Sep	Air China
07 Sep - 21 Sep	China Eastern
17 Sep - 22 Sep	China Eastern
06 Sep - 13 Sep	Air China
07 Sep - 17 Sep	Air China
04 Sep - 11 Sep	China Eastern
04 Sep - 18 Sep	China Eastern
24 Sep - 02 Oct	China Eastern
05 Sep - 12 Sep	China Eastern
18 Sep - 05 Oct	China Eastern
17 Sep - 03 Oct	Air China
18 Sep - 04 Oct	China Eastern
30 Sep - 05 Oct	China Eastern
21 Sep - 02 Oct	Ethiopian Airlines
29 Sep - 10 Oct	VietJet Air
21 Sep - 08 Oct	China Eastern
15 Sep - 01 Oct	Air China
29 Sep - 05 Oct	VietJet Air

Also check the deals for one-way flights from Hanoi to London 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 Hanoi to London in September from 571€

Return flights