Find United Airlines(UA) flights from San Francisco to Sydney

At the moment, several airlines serve connecting flights from San Francisco to Sydney, including: Fiji Airways Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.

It takes about 15 hours 20 minutes to fly from San Francisco to Sydney.

By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Francisco to Sydney 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.

The cheapest months to fly from San Francisco to Sydney is September, when demand for travel is lower.

After crunching the numbers on our March flight calendar, it's currently cheapest to fly from San Francisco to Sydney on March 15, 2026 with Fiji Airways, with prices starting at US$347.

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

The time difference between Sydney and San Francisco is 18h.

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.