Features That Make The Airbus A350 Slightly Quieter Than The Boeing 787 Dreamliner

The Airbus A350 is often perceived as slightly quieter than the Boeing 787 Dreamliner, even though both target efficient long-haul flying and share key design themes like extensive composites, lower cabin altitudes, and advanced engines. A passenger-focused comparison looks beyond raw specifications and into cabin experience: background noise, isolation of engine and aerodynamics, cabin pressure, humidity, windows, and personal space. Independent measurements don’t always show the same results across every aircraft and flight condition, but the A350 has built a strong reputation for a quieter cabin in trip reports. One contributing factor is a marginally wider cabin, about 5 inches (12 cm) wider overall, which can matter in nine-abreast economy seating.