A Norwegian Boeing 878-8 Dreamliner arriving at Copenhagen Airport.

The Boeing 787 Dreamliner is an American long-haul, mid-size widebody, twin-engine jet airliner made by Boeing Commercial Airplanes.

Its variants seat 242 to 335 passengers in typical three-class seating configurations. It is Boeing's most fuel-efficient airliner and is a pioneering airliner with the use of composite materials as the primary material in the construction of its airframe.

The 787 was designed to be 20% more fuel efficient than the Boeing 767, which it was intended to replace.

The 787 Dreamliner's distinguishing features include mostly electrical flight systems, swept wingtips, and noise-reducing chevrons on its engine nacelles.