Cheapest return flights from Hong Kong to San Francisco in September from $649

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

Return flights

14 Sep - 27 Sep Asiana Airlines
05 Sep - 14 Sep Asiana Airlines
03 Sep - 10 Sep Asiana Airlines
04 Sep - 15 Sep Asiana Airlines
29 Sep - 09 Oct STARLUX Airlines
18 Sep - 06 Oct STARLUX Airlines
27 Sep - 08 Oct STARLUX Airlines
29 Sep - 06 Oct STARLUX Airlines
26 Sep - 10 Oct STARLUX Airlines
05 Sep - 19 Sep China Airlines
13 Sep - 20 Sep China Airlines
09 Sep - 25 Sep China Airlines
14 Sep - 26 Sep China Airlines
10 Sep - 17 Sep China Airlines
24 Sep - 30 Sep China Airlines
15 Sep - 20 Oct China Airlines
22 Sep - 20 Oct China Airlines
27 Sep - 08 Oct United direct
22 Sep - 20 Oct Cathay Pacific direct
27 Sep - 10 Oct EVA Air

Also check the deals for one-way flights from Hong Kong to San Francisco 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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