The African operator Ethiopian Airlines has already set the schedule for the flights it will honor with the new Boeing 787 aircraft. From 20 to September 2012, the route Washington Dulles - Addis Ababa will be operated daily with Boeing 787. The aircraft is configured in two classes, with a total of 270 seats (24 for Business and 246 for Economy Class).
Currently the route is operated daily with Boeing 777-200LR. The flight schedule from Washington Dulles to Addis Ababa:
DO NOT ADD 500: 22 - 15: 03 + 25 FCO 1 + 0425 - 1: 08 + 40 IAD 1 D
ET501 IAD 11: 15 - 07: 45 + 1 ADD 787 D
The inaugural Boeing 787 Dreamliner flight, under the Ethiopian Airlines livery, will be made these days, 15-16 August, departing from Washington DC. Tickets for this flight have been booked long ago.