▁fl ights ▁operating ▁In ▁ 2 0 0 6 , ▁there ▁were ▁ 1 0 ▁non - stop ▁fl ights ▁between ▁the ▁two ▁countries ▁ 2 ▁million ▁passenger ▁tri ps ▁per ▁year . ▁ ▁As ▁of ▁ 2 0 1 3 , ▁there ▁were ▁ 2 8 ▁non - stop ▁routes ▁( not ▁including ▁Hong ▁Kong ▁and ▁Mac au ), ▁operated ▁by ▁three ▁major ▁US ▁carri ers , ▁United , ▁American ▁and ▁D elta , ▁and ▁four ▁Chinese ▁carri ers , ▁Air ▁China , ▁China ▁Eastern , ▁China ▁Southern ▁and ▁H ain an ▁Airlines . ▁▁ ▁As ▁of ▁ 2 0 1 8 , ▁there ▁are ▁ 6 1 ▁non - stop ▁routes ▁( not ▁including ▁Hong ▁Kong ▁and ▁Mac au ), ▁operated ▁by ▁four ▁US ▁carri ers , ▁United , ▁American , ▁D elta , ▁Hawai i ▁and ▁six ▁Chinese ▁carri ers , ▁Air ▁China , ▁China ▁Eastern , ▁China ▁Southern , ▁H ain an , ▁X iam en ▁and ▁S ich uan ▁Airlines . ▁ ▁Among ▁the ▁US ▁carri ers : ▁( 9 ) ▁United ▁Airlines ▁f lies ▁non - stop ▁between ▁Be ij ing ▁and ▁San ▁Francisco , ▁Chicago , ▁New ark , ▁and ▁Washington ▁as ▁well ▁as ▁non - stop ▁Shang hai ▁service ▁from ▁San ▁Francisco , ▁Chicago , ▁New ark , ▁and ▁Los ▁Angeles ▁as ▁well ▁as ▁non stop ▁Ch eng du ▁service ▁from ▁San ▁Francisco . ▁United ▁ended ▁service ▁to ▁H ang z hou ▁on ▁ 1 6 ▁October ▁ 2 0 1 7 . ▁( 7