Singapore Airlines (SIA) is set to resume its passenger flights on the Dhaka-Singapore route on Oct 20.The airline will carry passengers every Tuesday and Thursday on its Airbus A350-900 aircraft, the airline said in a statement on Thursday.In addition to the Dhaka flights, SIA will operate passenger flights to 37 destinations across the world.SIA has been operating passenger aircraft carrying cargo flights on the Dhaka-Singapore route since May 18 to facilitate international trade.