Air Canada Express is a regional airline service that operates as a subsidiary of Air Canada. It provides short-haul flights to various destinations across Canada and the United States, connecting smaller cities to larger hubs. The airline primarily uses a fleet of Bombardier CRJ and Embraer E-Jet aircraft, which are designed for efficient travel over shorter distances. Air Canada Express plays a crucial role in enhancing connectivity for travelers, making it easier to reach remote areas and facilitating access to Air Canada's extensive network.