Time Difference between Sydney and Costa Mesa

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

Sydney operates on Australia/Sydney timezone, while Costa Mesa uses America/Los Angeles. 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 Sydney and Costa Mesa 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.