Cheapest return flights from Hong Kong to London in September from $642

Best time to book flights for Hong Kong (HKG) to London (LHR) flights at AirHint

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

Return flights

22 Sep - 29 Sep Finnair
23 Sep - 29 Sep Finnair
11 Sep - 14 Sep Singapore Airlines
09 Sep - 18 Sep Singapore Airlines
10 Sep - 22 Sep Singapore Airlines
09 Sep - 24 Sep Singapore Airlines
16 Sep - 24 Sep Singapore Airlines
10 Sep - 25 Sep Singapore Airlines
17 Sep - 22 Sep Singapore Airlines
10 Sep - 21 Sep Singapore Airlines
11 Sep - 30 Oct Singapore Airlines
28 Sep - 28 Oct Singapore Airlines
28 Sep - 27 Oct Singapore Airlines
29 Sep - 27 Oct Finnair
29 Sep - 28 Oct Finnair
24 Sep - 22 Oct Finnair
28 Sep - 29 Oct Finnair
30 Sep - 29 Oct Singapore Airlines
27 Sep - 28 Oct Singapore Airlines
23 Sep - 20 Oct Finnair

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

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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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