Chinese president Xi Jinping has presided over the inauguration of a second international airport for Beijing with a terminal billed as the world’s biggest.
Beijing Daxing International Airport, built in less than five years at a cost of 120 billion yuan (£13.5 billion), is designed to handle 72 million passengers a year.
The airline’s first commercial flight, a China Southern Airlines plane bound for the southern province of Guangdong, took off on Wednesday afternoon, state broadcaster CCTV reported.
Six more flights took off later for Shanghai and other destinations.
The Chinese capital’s main airport is the world’s second-busiest after Hartsfield-Jackson Atlanta International Airport and is nearing capacity.
Daxing, designed by the late Iraqi-British architect Zaha Hadid, includes a terminal billed as the world’s biggest at one million square metres (11 million square feet).
Despite that, its builders say travellers will need to walk no more than 600 metres (2,000ft) to reach any boarding gate.
The vast, star-shaped airport is about 45 kilometres (30 miles) south of downtown Beijing. It has four runways, with plans for as many as three more.
Carriers including British Airways and state-owned China Southern, the country’s biggest airline by passengers, plan to move to Daxing from Beijing Capital International Airport.
The capital has a third airport, Nanyuan, for domestic flights, but the government says that will close once Daxing is in operation.