Would a prop plane fly internationally?

Prior to 1952, all commercial international flights were propeller-driven aircraft. The Douglas DC-4, a commercial aviation workhorse, had a range of 4,250 miles. Before 1946, transatlantic flights to and from the US typically required a stop in Gander, Newfoundland. In 1946, the first non-stop transatlantic flights were inaugurated, using Lockheed Constellation aircraft.

The B-29 Stratofortress, a propeller-driven long-range bomber, has a maximum range (unloaded) of 5,600 miles. The distance record for a B-29 is 7,916 miles.