Chhatrapati Shivaji International Airport formerly known as Sahar International Airport, is the primary international airport serving the Mumbai. 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 29th busiest airport in the world by passenger traffic in calendar year 2016 handling over 44.68 million passengers. The airport is the second busiest in the country in terms of cargo traffic also. In March 2017, the airport overtook London's Gatwick Airport as the world's busiest airport in terms of single runway operations. The airport has three operating terminals spread over an operational area of 1,850 acres and handles about 850 aircraft movements per day. It handled record 51 movements in one hour on 16 September 2014. It won the 2015 ASQ Best Airport Award in the 25-40 million passengers per annum category by Airports Council International. It has also won the "Best Airport in India and Central Asia" award at the Skytrax 2016 World Airport Awards. It is one of the three airports in India to have implemented Airport Collaborative Decision Making (A-CDM) to ensure timely takeoffs and landings.
Two Commemorative Stamps and a Miniature Sheet were released on 75 years on Chhatrapati Shivaji International Airport by Shri Harish C. Agrawal, Chief Postmaster General Maharashtra circle on 15th October 2017. The event was organised in the memory of the Late JRD Tata, who on October 15, 1932, piloted the first flight of Tata Air Services from Karachi to Mumbai via Ahmedabad carrying airmail.