Find Air China(CA) flights from Hong Kong to San Francisco

At the moment, you can catch a nonstop flight from Hong Kong to San Francisco with the following airlines, including: United Airlines Cathay Pacific American Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

It takes about 12 hours 43 minutes to fly from Hong Kong to San Francisco.

By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Hong Kong to San Francisco is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

Based on Trip.com data in the past 4 weeks, there is 28 flight per week flying from Hong Kong to San Francisco. You can check the weekly schedule for popular airlines on this route below: United Airlines: S/M/T/W/T/F/S -- UA862 (12:26)

The cheapest months to fly from Hong Kong to San Francisco is October, when demand for travel is lower.

After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Hong Kong to San Francisco on August 28, 2026 with Air Premia, with prices starting at US$399.

You can land at any one of the following hubs in San Francisco, with Hong Kong International Airport to San Francisco International Airport (HKG-SFO) is by far the most common option on this route: San Francisco International Airport (SFO).

The time difference between San Francisco and Hong Kong is 16h.

Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.