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

Return flights

02 Sep - 08 Sep	China Southern
03 Sep - 10 Sep	China Southern
07 Sep - 27 Sep	China Southern
03 Sep - 12 Sep	China Southern
07 Sep - 21 Sep	China Southern
08 Sep - 28 Sep	Air China
22 Sep - 28 Sep	Air China
05 Sep - 27 Sep	Air China
10 Sep - 22 Sep	Air China
27 Sep - 05 Oct	VietJet Air
08 Sep - 11 Sep	Air China
29 Sep - 12 Oct	China Southern
08 Sep - 06 Oct	China Eastern
22 Sep - 05 Oct	Air China
28 Sep - 08 Oct	Emirates
24 Sep - 01 Oct	Emirates
25 Sep - 02 Oct	Emirates
27 Sep - 04 Oct	Emirates
30 Sep - 07 Oct	Emirates
26 Sep - 03 Oct	Emirates

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 607€

Return flights