- Buka Airport is an airport located in the city of Buka, which is the capital of the Autonomous Region of Bougainville in Papua New Guinea. It is situated on the island of Buka, which is part of the larger island group of Bougainville. Buka Airport is the main gateway for domestic and international flights to Bougainville. It has a single runway and serves as the primary air transportation hub for passengers and cargo in the region.