An airline is a company that provides air transport services for passengers and cargo. Airlines operate aircraft, such as airplanes, to fly people and goods from one location to another. They offer various services, including ticket sales, in-flight meals, and entertainment, making travel more comfortable and enjoyable. Airlines connect cities and countries, allowing people to explore new places and cultures. Major airlines often have hubs in key cities, where they manage numerous flights daily. Travelers can choose from different classes, such as economy and first class, depending on their budget and preferences, enhancing their flying experience.