Singapore Airlines is a full service airline, is the flag carrier of Singapore and is based at Singapore Changi Airport. It operates an all wide-body fleet, including variants of the B777, A330, A350 and A380, and maintains a low fleet age. Singapore Airlines was the launch customer of the A380 in 2007. They have two frequent flier programs: PPS Club (revenue-based program for premium cabins) and KrisFlyer. Singapore Airlines is a member of Star Alliance, and has partnership programs with Virgin Atlantic, Virgin Australia, Virgin America, Vistara, Scoot and Silk Air.