NEW DELHI/ SINGAPORE, August 17

IndiGo, India’s biggest airline by market share, has finalised purchase of 250 Airbus A320neo aircraft, handing the European firm its largest-ever order by number of planes in a deal worth $26.55 billion at list prices.

The agreement confirms an earlier provisional order by IndiGo for the 250 narrow-body planes announced in October. Budget airline IndiGo has now ordered 530 A320 family planes in all from Airbus, it said.

The latest deal helps extend Airbus’s lead against arch-rival Boeing in orders for fast-growing upgraded narrow-body aircraft segment. IndiGo would start taking delivery of the new Airbus planes from 2018 until 2026.