NEW DELHI, April 26 -- IndiGo, India's largest domestic airline, has entered the long-haul market by ordering 30 Airbus A350-900 aircraft that will help the low-cost carrier launch non-stop flights from the country to Europe, the United Kingdom, the United States, and Australia. The cost of acquisition, it is estimated at over $9 billion, based on 2018 prices. Airbus has stopped publishing list prices since 2019.HTC...