How long is a flight from Perth to Athens?

The total flight duration from Perth, Australia (PER) to Athens, Greece (ATH) is approximately 18 hours and 30 minutes. This duration includes the layover time at a connecting airport, usually somewhere in the Middle East or Europe. Please note that exact flight times can vary depending on several factors such as winds, air traffic, and the specific route taken by the airline. Additionally, layovers can vary in length, so it's best to check with your chosen airline for specific flight options and schedules.