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 UK, the US, and Australia. While the airline and the aircraft manufacturer did not share the cost of acquisition, it is estimated at over $9 billion, based on 2018 list prices. Airbus has stopped publishing list prices since 2019.P12...