Bangladesh and Australia are separated by the vast Indian Ocean and the Southeast Asian archipelago. The shortest great-circle distance between the two countries is approximately 5,850 miles (9,415 kilometers).
This measurement represents the straight-line distance between the nearest points—typically from Bangladesh's southeastern coast (near Chittagong) to Australia's northern coast (around Cape York Peninsula or the Northern Territory). Actual flight distances are longer due to routing, typically 6,200–6,800 miles (10,000–11,000 km) with connections, taking 12–16+ hours.
Distances vary significantly depending on the specific cities: Dhaka to Sydney is roughly 5,900 miles (9,500 km), while Dhaka to Perth is closer at about 4,500 miles (7,200 km).