AirHint found the following cheapest return flights from Hong Kong (HKG) to London (LHR) in September 2026 (see full year).

Return flights

24 Sep - 02 Oct	Royal Brunei
24 Sep - 07 Oct	Royal Brunei
20 Sep - 27 Sep	Etihad Airways
30 Sep - 21 Oct	Finnair
15 Sep - 15 Oct	Finnair
15 Sep - 13 Oct	Finnair
16 Sep - 30 Sep	Finnair
17 Sep - 29 Sep	Finnair
15 Sep - 14 Oct	Finnair
10 Sep - 16 Sep	SWISS
17 Sep - 26 Sep	SWISS
17 Sep - 27 Sep	Finnair
15 Sep - 30 Sep	Finnair
19 Sep - 26 Sep	Etihad Airways
18 Sep - 28 Sep	Etihad Airways
17 Sep - 17 Oct	Royal Brunei
06 Sep - 19 Sep	SWISS
17 Sep - 04 Oct	Finnair
30 Sep - 09 Oct	Finnair
30 Sep - 18 Oct	Finnair

Also check the deals for one-way flights from Hong Kong 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 Hong Kong to London in September from 559€

Return flights