The Boeing 787 Dreamliner is widely regarded as one of the best passenger aircraft in 2026 because it was engineered from the ground up for superior cabin comfort and health. Unlike older aluminum planes, the Dreamliner is made of carbon-fiber composites, which are stronger and allow for a lower cabin altitude (6,000 feet instead of the usual 8,000 feet). This means there is more oxygen in the air, which significantly reduces the symptoms of jet lag, headaches, and fatigue. The aircraft also features a specialized "fresh air" filtration system that maintains higher humidity levels, preventing the dry eyes and skin common on long-haul flights. Additionally, the 787 is famous for its massive, electronically dimmable windows that are 30% larger than those on other planes, providing every passenger with a view of the horizon. Its advanced "Gust Alleviation" technology also makes for a much smoother ride by detecting and countering turbulence before it can jolt the cabin, making it a favorite for nervous flyers and business travelers alike.