How long is the flight to Sydney?
The below times are for non stop flight segments to Sydney Kingsford Smith International Airport (SYD). From San Francisco International Airport (SFO), the flight time is roughly 13 hours and 58 minutes. From Los Angeles International Airport (LAX), the flight time is roughly 14 hours and 16 minutes. From Honolulu International Airport (HNL), the flight time is roughly 10 hours and 10 minutes.
Please keep in mind that the above are time in the air; most travel sites will quote a ramp to ramp time which is about a 1/2 hour greater than the air time.