Commuter airlines are smaller regional airlines that provide short-haul flights, often connecting smaller cities to larger hubs. They typically operate smaller aircraft and serve routes that may not be profitable for larger airlines. These airlines play a crucial role in enhancing regional connectivity and providing access to air travel for communities that might otherwise be underserved. Many commuter airlines operate under codeshare agreements with major carriers, allowing passengers to book flights seamlessly. They often focus on convenience and frequency, making it easier for travelers to reach their destinations quickly. Examples of commuter airlines include SkyWest Airlines and Piedmont Airlines.