The economic aspect speaks in favor of turboprops, because on short routes the turboprop is often cheaper to operate than a jet. Turboprops can also often land and take off at airfields where the runway is too short for jets. With turboprops, many airlines also have the option of leaving the aircraft on site, which eliminates expensive positioning flights for the customer.
Some examples of Turboprops and Piston aircraft
BEECH KING AIR 250
PIAGGIO AVANTI 180
DIAMOND DA42