AirHint found the following cheapest return flights from Hong Kong (HKG) to San Francisco (SFO) in September 2026 (see full year).
Return flights
| 24 Sep - 06 Oct | China Airlines | ||
| 24 Sep - 06 Oct | Cathay Pacific | direct | |
| 25 Sep - 06 Oct | Cathay Pacific | direct |
Also check the deals for one-way flights from Hong Kong to San Francisco in September.
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