hk singapore sydneyThere are 3 airs that fly direct from Sydney to Hong Kong. They are: Cathay Pacific, Hong Kong Airs and Qantas Airways. The cheapest price of all airs flying this route was foundFly Singapore to Sydney (SIN to SYD) The approximate time for a direct flht from Singapore to Sydney is 7 hours and 40 minutes. With mild winters and hot summers, Australia’s Harbour City is enticing at any time of the year.