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

Return flights

16 May - 20 May	China Airlines
01 May - 12 May	China Airlines
05 May - 19 May	China Airlines
22 May - 12 Jun	Philippine Airlines
05 May - 19 May	Cathay Pacific	direct
01 May - 12 May	Cathay Pacific	direct
29 May - 06 Jun	Asiana Airlines
14 May - 29 May	Asiana Airlines
18 May - 30 May	EVA Air
18 May - 30 May	United	direct
14 May - 29 May	United	direct
22 May - 12 Jun	United	direct
29 May - 06 Jun	United	direct

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

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 San Francisco in May from 527€

Return flights