Offers and Promotions Qatar Airways 11.11 Sale from Singapore: Return Economy Fares from S$779, Book by 12 Nov 2026 Qatar Airways is offering 11.11 return fares from Singapore, starting at S$779 to Istanbul, for booking from 3 to 12 November 2026 and travel until 31 July 2027. Check the fine print before you book. Nov 5, 2026