The distance from Dubbo to Sydney is approximately 410 to 410.4 kilometers by road, which is roughly 255 miles, and about 309 kilometers or 188 miles by air flight. The driving time typically ranges around 5 hours and 53 minutes to 6 hours, depending on the exact route and traffic conditions. The aerial distance, or shortest flight path, is around 309 km (188 miles), with flight durations approximately 51 minutes to 3 hours and 28 minutes, depending on the flight specifics.