BXU stands for Butuan Airport, while SGN stands for Ho Chi Minh City Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. Hanoi Noibai Airport (HAN), Da Nang Airport (DAD), Nha Trang Cam Ranh Airport (CXR), Phu Quoc Duong Dang Airport (PQC), Dalat Lien Khuong Intl Airport (DLI) are other airports near this flight route and their unique identifiers/IATA codes.