A commuter airline is a type of airline that primarily operates short-haul flights, connecting smaller regional airports to larger hubs. These airlines often serve areas that are not accessible by major carriers, providing essential transportation for passengers traveling for business or leisure. Typically, commuter airlines use smaller aircraft, which allows them to operate in and out of airports with shorter runways. They play a crucial role in enhancing regional connectivity and supporting local economies by making air travel more accessible to communities that might otherwise be underserved by larger airlines.