Depends on specifically what airport your going from, what airport your going to, the time of day, and the airline your flying with.
The most common departure/destination locations are LAX (Los Angeles International) and SYD (Sydney Airport)
Here is the airlines that do that route, their scheduled departure times from LAX, and their flight time. The departure times do include flights canceled due to demand and these flights usually occur every day of the week.
Delta:
Departure: 11:35pm
Flight Time: 15 hours
Qantas:
Departure: 11:30pm / 12:50 pm
Flight Time: 15 hours / 14 hours 30 minutes
United:
Departure: 11:32 pm
Flight Time: 14 hours 30 minutes
Virgin Blue International:
Departure: 10:20 pm
Flight Time: 14 hours 45 minutes
It takes about 16 hours according to HowManyHours.com
A typical flight from Los Angeles, California to Darwin, Australia takes about 15 hours and 47 minutes.
It would take around 16 hours.
it would take about 14 hours depending on weather conditions
The flight from California to Germany is 12 hours long.
the flight is about 21 hours from Australia to France!
The flight time from New York to California is about 5.5 hours.
With one stop in Los Angeles, California, the flight would be roughly 20 hours and 30 minutes.
A flight from California to Cuba takes 6 hours.
A flight from Darwin, Australia to Cairns, Australia is 2 hours.
it depends where you are in northern California and where your destination is in southern California
The flight is about 14-15 hours long
It's about a 2.5 - 3 hour flight.