Singapore Airlines With Airbus A350-900 XWBSingapore Airlines with Airbus A350-900 XWB the extra widebody aircraft. The picture taken at Airbus facility in Toulouse, France during flight testing. Singapore Airlines is the third operator in the world, after launch customer Qatar Airways and Vietnam Airlines. The carrier has placed order for more than 65 A350-900s. Airbus claims the A350 has outstanding performance on fuel efficiency and flight experience.