In fact, two routes - Miami (MIA) to New York-JFK and MIA to Los Angeles (LAX) - will even exclusively be operated by Boeing 777 jets. In June, 2,855 domestic flights will be operated by AA's largest jets, per Cirium schedules. With domestic travel ramping up this summer, it's easier than ever to find a domestic flight operated by a wide-body, especially if you're flying American Airlines.