The Beijing Daxing International Airport (IATA: PKX) located  south of the city in Daxing District bordering the city of Langfang, Hebei Province, opened on 25 September 2019. The Daxing Airport has one of the world's largest terminal buildings and is expected to be a major airport serving Beijing, Tianjin and northern Hebei Province. Daxing Airport is connected to the city via the Beijing–Xiong'an intercity railway, the Daxing Airport Express line of the Beijing Subway and two expressways.