Propeller-driven airliners are aircraft that use one or more propellers to generate thrust for flight. These planes typically have piston or turboprop engines, which are more efficient at lower speeds and altitudes compared to jet engines. They are often used for regional flights, connecting smaller airports to larger hubs. These airliners are known for their ability to take off and land on shorter runways, making them ideal for accessing remote locations. Examples of propeller-driven airliners include the Bombardier Q400 and the ATR 72, which are popular choices for regional airlines around the world.