Beijing Daxing International Airport was officially opened to the public on September 26, 2019, with the first commercial flight landing there at 10:12 (UTC+8) that same day. It will serve as a hub for SkyTeam alliance airlines and some Oneworld members, and after nearly five years of construction, the $63 billion structure features a 7.5 million square foot terminal sitting on 18 square miles of land, making it the world’s largest airport.