There is not necessarily any difference in the aircraft itself. Jets can allow a suitable aircraft to fly close to the speed of sound or even over it, while propellers are limited to the propeller tips travelling at approximately the speed of sound and the plane a good bit slower. read more
The primary difference between propeller driven planes and jets is the obvious one. They have different power plants. There are also differences that are not so obvious but natural derivatives of the power plant choice. Jet engines are the most powerful aircraft engines available for extended use in transportation. read more
A Jet plane has no propellers. (Actually, there are 'prop-jets' on which propellers are powered by jet engines.) There is basically no difference in the airplane. The engines are different and sometimes the design of the wings or fuselage is different to allow for the different type engines. read more