Time Difference between Costa Mesa and Sydney

Costa Mesa, United States and Sydney, Australia are separated by a time difference of 18 hours. When it's noon in Costa Mesa, it's 18 hours later in Sydney.

Costa Mesa operates on America/Los Angeles timezone, while Sydney uses Australia/Sydney. Both cities may observe Daylight Saving Time at different dates, which can temporarily change the time difference by an hour.

Best Time to Call

Due to the 18 hours difference, finding overlapping business hours can be challenging.

Flight Considerations

The distance between Costa Mesa and Sydney is approximately 12,078 km. A direct flight typically takes around 15.2 hours. When traveling, remember that your arrival time will be in local time. Use our Flight Time Calculator for accurate arrival predictions.