Mumbai Chhatrapati Shivaji International Airport, formerly Sahar International Airport, is the second busiest airport in India and handled almost 43. Mio passengers in 2015. This airport has two cross runways and is reaching its full saturation point. The main airlines in Mumbai are Jet Airways, Indigo, Air India, Go Air, Spicejet, Vistara. By far, Jet Airways has the most number of schedules followed by Indigo.