Nope, not really. I believe there is one through Allegiant Air but I'm not certain. You can rent a car or hire a car service. The car service will run about $200, plus tip, r/t. It's almost double the travel time that MCO to WDW is. And, with much fewer people flying in, and out of, Sanford, there is less likelihood of a car service picking up a fare once he drops his first passenger off.
The travel time is about 50 mins. If you decide to rent, the drive is pretty straightforward and easy.