Direct flight (nonstop):
* Flight time: Approximately 14 hours 30 minutes
Flight with stopover (via Sydney):
* Los Angeles to Sydney: Approximately 14 hours
* Sydney to Brisbane: Approximately 2 hours
* Total flight time: Approximately 16 hours
These flight times are subject to change and may vary based on factors such as weather conditions, aircraft type, and operational considerations. It's always best to check with the specific airline or flight booking website for the most accurate and up-to-date flight times.