Air Serbia and Air China have expanded their codeshare partnership to include one new route. The Chinese flag carrier has added its flight numbers and designator code (CA5599/5600) onto Air Serbia’s service between Tianjin and Belgrade. The Serbian carrier currently codeshares on Air China’s flights between Vienna and Beijing. Air Serbia will increase frequencies on its Tianjin service to two per week from October 31. Air China maintains flights to 39 cities from Tianjin, 38 of which are domestic.