The boy, Taylor Bishop, and two people on the plane died in the Monday afternoon crash, which was recorded by a neighbor's security camera, fire officials said.
The boy's mother, Megan Bishop, was also injured, but was released from the hospital later Monday, Pembroke Pines Fire Chief Marcel Rodriguez told news outlets.
The Beechcraft Bonanza plane had just taken off from North Perry Airport in Pembroke Pines and was returning just before 3 p.m., the fire chief said.
Firefighters eventually freed the trapped child, and they were taken to the hospital, where the boy died.
A neighbor's door camera recorded the crash, showing the plane nose-diving into the SUV as the woman was driving down a street.