Indigo Airlines has placed a historic order for 500 Airbus A320 aircraft. The order was placed on the first day of the Bourges Air Show in France. Indigo is one of the most important low cost airlines across India. Airbus officially announced this. This is said to be the largest commercial order in the history of aviation. Its amount has not been specified but is likely to be in the range of several hundred billion euros. With this order, IndiGo will have over 1,300 aircraft in the Airbus range. This purchase agreement of Indigo was signed by Rahul Bhatia, Dr. Venkataramani Sumantran and Peter Albers. Guillaume Faury and Christian Scheyer represented Airbus on this landmark contract.