qantas airlines
American Airlines an also British Airways fly direct from LHR to LAX.
14hr 30min to 14hr 55min Los Angeles (LAX) to Sydney (SYD) by a nonstop flight operated by Delta Air Airlines, Qantas Airways, United Airlines or V Australian Airlines.
13hr 25min to 13hr 50min Sydney (SYD) to Los Angeles (LAX) by a nonstop flight operated by American Airlines, Delta Air Lines, Qantas Airways, United Airlines or V Australian Airlines.
Delta Airlines is located in Terminal 5 at LAX airport.
Alaska Airlines arrives at Terminal 6 at LAX.
The distance between the two airports is about 7,530 air miles.
Air Tahiti nui And air France are the only two airlines that operate nonstop from the mainland U.S.A. (LAX) to Tahiti-faaa. There are none from SFO.
A random search for flights from Perth (PER) to Los Angeles (LAX) shows:OPTION 1: 20hr 05min via Sydney (SYD)PER - SYD V Australia Airlines Flt 560 Dep 11:45am 15Jan,FriOperated by Virgin BlueSYD - LAX V Australia Airlines Flt 1 Dep 09:05pm 15Jan,FriFlight Duration: 18hr 00min; Layover Time: 2hr 05min; Total Trip Time: 20hr 05min
The air distance from Los Angeles, California, to Sydney, Australia, is 7,495 miles. That equals 12,062 kilometers or 6,513 nautical miles.
I could not find any airline that does this non stop. If you wish to do it in one stop you have to change airlines somewhere
To get from Australia to Florida, you would need to take a flight that connects through a major hub like Los Angeles or Dallas. There are no direct flights between Australia and Florida due to the long distance and lack of direct routes. Airlines such as Qantas, American Airlines, or United Airlines may offer connecting flights.