Cheapest return flights from Hong Kong to San Francisco in September from $626

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

Return flights

23 Sep - 30 Sep Philippine Airlines
04 Sep - 12 Sep China Airlines
04 Sep - 13 Sep China Airlines
25 Sep - 05 Oct China Airlines
24 Sep - 04 Oct United
18 Sep - 03 Oct United
23 Sep - 30 Sep Cathay Pacific direct
25 Sep - 05 Oct United direct
04 Sep - 13 Sep Cathay Pacific direct
04 Sep - 12 Sep Cathay Pacific direct

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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