Have aircraft become quieter over the years? Yes, they have. A lot quieter. Over the past 50 years individual aircraft have reduced their noise impact by 75%.

Yes, airplanes are becoming significantly quieter in 2026 thanks to major leaps in engine architecture and aerodynamics. The primary driver is the "High-Bypass Turbofan" design, where most of the air bypasses the engine core, creating a "shroud" of slower air that muffles the noisy, high-speed exhaust. Modern jets like the Boeing 787 Dreamliner and Airbus A350 also use "chevrons"—sawtooth-shaped edges on the engine nacelles—that mix hot and cold air more smoothly to reduce turbulence and noise. Additionally, newer Geared Turbofan (GTF) engines allow the front fan to spin at a slower, quieter speed than the internal turbine. NASA is also testing "Quiet Supersonic" technology (the X-59) to eliminate the loud sonic boom, potentially allowing supersonic travel over land. These combined efforts have reduced the noise footprint of new aircraft by up to 60% compared to the older models they replace, providing much-needed relief to communities living near busy international airports.