LONDON: All Saudi Arabian Airlines flights to and from London's Heathrow Airport will from Dec. 1 this year operate out of Terminal 4. Abdullah Bin Mushabib, Saudia's assistant director general, said the move from Terminal 3 to the new building would bring swifter and better services for passengers. “Heathrow Airport is seeing a continual increase in passenger numbers between the Kingdom and the British capital,” he said.