Commercial airliners are large aircraft designed to transport passengers and cargo over various distances. They are operated by airlines and can carry anywhere from a few dozen to several hundred people. These planes are equipped with advanced technology for navigation, safety, and comfort, making air travel efficient and accessible. Airliners typically fly on scheduled routes, connecting cities around the world. They are categorized into different classes, such as economy, business, and first class, to accommodate various passenger needs and budgets. Major manufacturers of commercial airliners include Boeing and Airbus, which produce popular models like the Boeing 737 and Airbus A320.