Singapore, Aug. 16 -- Vistara, the joint venture between Tata Sons Ltd and Singapore Airlines, is set to start long-haul international flights to destinations in Europe and Australia next year, its chief executive said. Vistara will also look for code-share partnerships with other airlines in the new geographies, Leslie Thng said in an interview on Wednesday. "We look at our independent network in India as a very big source market. Every destination we fly, we look for a partner. SIA (Singapore Airlines) is a natural partner for South- East Asia and Australia," Thng said. "We do have plans to eventually fly to Australia on our own. We are also working on viceversa codeshare with British Airways (for Europe)," Thng added. Vistara kicked off ...