The Boeing 787 Dreamliner is a high-performance wide-body aircraft designed for both speed and extreme fuel efficiency. Its typical cruising speed is Mach 0.85, which translates to approximately 561 mph (903 km/h) at a standard cruising altitude of 35,000 to 40,000 feet. Under certain conditions, it can reach a maximum operating speed of Mach 0.90, or roughly 594 mph (956 km/h). One of the reasons the Dreamliner feels "fast" to passengers is its advanced aerodynamics and raked wingtips, which allow it to maintain high speeds while consuming 20% less fuel than the aircraft it replaced. In real-world travel, a Dreamliner can occasionally exceed its ground speed significantly if it catches a strong jet stream; it is not uncommon for these planes to hit ground speeds of over 700 mph when flying eastward across the Atlantic. This combination of speed and range (up to 7,500+ nautical miles) has allowed airlines to open new "long and skinny" routes that were previously not profitable, making the Dreamliner a favorite for transoceanic travelers who value shorter flight times and a more pressurized, comfortable cabin environment.