787 Dreamliner Qantas airplane model. The Boeing 787 Dreamliner is a mid-sized, wide-body, twin engine jet airliner currently under development by Boeing Commercial Airplanes. It will carry between 210 and 330 passengers depending on variant and seating configuration. Boeing stated that it will be more fuel-efficient than earlier Boeing airliners and will be the first major airliner to use composite materials for most of its construction. Boeing's development of the 787 is also innovative in the collaborative management approach with suppliers.