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The Boeing 787 Dreamliner is a long-range, mid-size wide-body, twin-engine jet airliner developed by Boeing Commercial Airplanes. It seats 210 to 290 passengers. Boeing states that it is the company's most fuel-efficient airliner and the world's first major airliner to use composite materials for most of its construction. The 787 consumes 20% less fuel than the similarly-sized Boeing 767. Some of its distinguishing features include a four-panel windshield, noise-reducing chevrons on its engine nacelles, and a smoother nose contour.

The aircraft's initial designation was 7E7, prior to its renaming in January 2005. The first 787 was unveiled in a roll-out ceremony on July 8, 2007, at Boeing's Everett assembly factory, by which time it had become the fastest-selling wide-body airliner in history with 677 orders. By June 2011, 827 Boeing 787s had been ordered by 59 customers, with ILFC having the largest number on order.

The 787 development and production has involved a large-scale collaboration with numerous suppliers around the globe. Final assembly is at the Boeing Everett Factory in Everett, Washington. Aircraft will also be assembled at a new factory in North Charleston, South Carolina. Both sites will deliver 787s to airline customers. Originally planned to enter service in May 2008, the project has suffered from repeated delays and is now more than three years behind schedule. The airliner's maiden flight took place on December 15, 2009, and completed flight testing in mid-2011. Final Federal Aviation Administration and European Aviation Safety Agency certification was received in late August 2011 and the first model was officially delivered on September 25, 2011.

The 787's design features lighter-weight construction. Its materials, listed by weight, are 50% composite, 20% aluminum, 15% titanium, 10% steel, and 5% other; the aircraft will be 80% composite by volume. Aluminum is used on wing and tail leading edges, titanium used mainly on engines and fasteners, with steel used in various places. External features include raked wingtips and engine nacelles with noise-reducing serrated edges. The longest-range 787 variant can fly 8,000 to 8,500 nautical miles, enough to cover the Los Angeles to Bangkok or New York City to Taipei routes. It has a cruising airspeed of Mach 0.85 561 mph.