Commercial jetliners are large aircraft designed to transport passengers and cargo over long distances. They are powered by jet engines, which allow them to fly at high speeds and altitudes. These planes are typically operated by airlines and can carry anywhere from a few dozen to several hundred passengers, depending on their size and configuration. The design of commercial jetliners focuses on efficiency, safety, and comfort. Features such as spacious cabins, in-flight entertainment systems, and advanced navigation technology enhance the travel experience. Popular models include the Boeing 737 and Airbus A320, which are widely used by airlines around the world.