Flight passengers queue in line at the boarding airline gate at Chek Lap Kok International Airport in Hong Kong

airport boarding gate flight boarding queue airport boarding process flight passengers hong kong airport airline gate queue passengers boarding passengers at flight gate departure terminal gate passengers airline line embarkation point airport terminal queue departure point queue preflight line travelers preflight line travel industry terminal architecture airline travelers terminal embarkation process hong kong line at entry point departing departuring hall chek lap kok flight travelers wait waiting area travel airline delay travellers runway window preparing camera slider movement sliding movement cancelled traveling travelers leisure stationed crisis economy plane ticker holder ticket sale series gates tourism tourism industry