Chhatrapati Shivaji International Airport, formerly Sahar International Airport, is the primary international airport serving the Mumbai Metropolitan Area, India. It is the second busiest airport in the country in terms of passenger traffic and international traffic after Delhi. The airport is still the busiest in the country in terms of cargo traffic. The airport is named after the 17th-century Maratha emperor, Chhatrapati Shivaji. In 2014 the airport handled over 37 million passengers. It is the primary hub for Air India, GoAir, Jet Airways and JetKonnect.
The Juhu Aerodrome functioned as Mumbai’s sole airport until 1942. Due to operational constraints imposed by its low-level location and proximity to the Arabian Sea coastline making it vulnerable during the monsoon season, a move further inland became necessary.RAF Santacruz was set up in 1942. It was a bigger airfield than Juhu and was home to several RAF squadrons from 1942 to 1947.
Source: Wikipedia
