American Airlines will begin a nonstop service from Logan Airport to London Heathrow Airport on March 29, 2020.  Passengers will fly on a 777-200 to London, and can choose between the airline’s 37 flagship business seats and 24 premium economy seats. The new daily flight will depart from Boston at 7:15 p.m. and arrive in London at 7:30 a.m. the following day.