 During the next two decades Commuter Airlines expanded to serve Washington D.C., White Plains, LaGuardia and JFK in New York City, Newark, New Jersey, Boston Logan, Massachusetts, Wilkes Barre/Scranton, and Allentown Pennsylvania and Ithaca and Elmira, New York.The company began with a single Piper Aztec and over the years added de Havilland Doves and Beechcraft Model 18s, (including a unique conversion of the Beechcraft Model 18 called the DuMod conversion.It had 15 seats, a nose wheel, and a triple tail similar to the Lockheed Constellation).