The Boeing 747, particularly the 747-400 and 747-8, is one of the fastest commercial subsonic airliners because of its highly swept-back wings and sheer aerodynamic power. Its wings are swept at a 37.5-degree angle, which is more aggressive than most modern twin-engine jets like the 787 or A350. This sweep allows the aircraft to fly at higher Mach numbers (typically Mach 0.85 to 0.86) by delaying the onset of "shock waves" that occur as air approaches the speed of sound over the wing. Additionally, the 747 was designed in an era where speed was a primary competitive advantage, and its four powerful engines provide the necessary thrust to maintain these high speeds even when fully loaded. The 747-8, the latest version, can even reach a maximum operating speed of Mach 0.92. While newer planes are more "fuel-efficient," they often fly slightly slower to save on gas. The 747 remains a favorite for pilots and long-haul passengers because it can often shave 30 to 45 minutes off a transoceanic flight compared to its slower, more modern counterparts.