Billy Bishop Toronto City Airport, also known as Toronto Island Airport, is an airport of entry located on the Toronto Islands, in Toronto, Ontario, Canada. The airport primarily serves short-haul flights to destinations across Canada and the United States by Air Canada and Porter Airlines. The airport is one of nine Canadian airports that contain United States border preclearance facilities. Situated close to downtown Toronto, it is one of two airports with scheduled airlines located in the Toronto area, alongside the primary Toronto Pearson International Airport. It is operated by the federal Toronto Port Authority corporation.