Beijing inched one step closer to taking the crown for the world’s busiest airport. rising to a new record of 95.8 million last year, narrow the gap with Hartsfield-Jackson Airport China is forecast to overtake the U.S. as the world’s biggest air-travel market as soon as 2022. To cope with the surge in fliers, Beijing is building a $12.9 billion mega airport in a southern suburb that’s scheduled to open next year. It would accommodate as many as 100 million passengers annually, Beijing will also be joining a select list of major cities with two or even three international airports, including London, New York, Tokyo and Paris.