new delhi october 11 indigo airlines maintenance staff leave an airbus 320 october 11 2011 at the domestic side of the indira gandhi international airport in new delhi india indigo airlines is india s biggest discount airline indigo has 230 airbus aircraft on order for delivery over the next 15 years with the completion of the new terminal 3 and domestic terminals the airport has become india s and south asia s largest and one of the most important aviation hubs able to handle over 46 million passengers per year photo by robert nickelsberg getty images.jpg from İndigo dild View Photo