Chhatrapati Shivaji Maharaj International Airport is an international airport serving Mumbai and the Mumbai Metropolitan Region . It is the second busiest airport in the country in terms of total and international passenger traffic after Delhi, and was the 14th busiest airport in Asia and 41st busiest airport in the world by passenger traffic in calendar year 2019. Its passenger traffic was about 49.8 million in year 2018.
It is also the second busiest airport in terms of cargo traffic. In March 2017, the airport surpassed London's Gatwick Airport as the world's busiest to operate a single runway at a time. This was later surpassed again by Gatwick Airport at the end of 2019 due to passenger numbers falling at Mumbai. The airport's IATA code BOM is associated with "Bombay", the city's former legal name.