Generally speaking, private jets carry between 4-16 passengers comfortably, while some can hold as many as 19 people on board. On the other hand, private planes typically only accommodate 3-9 passengers per flight due to their smaller size.

While often used interchangeably in casual conversation, the technical difference between a "private jet" and a "private plane" centers on the type of engine propulsion used. A private plane is a broad, umbrella term that encompasses any aircraft owned and operated for non-commercial or personal use, including single-engine piston planes (like a Cessna 172) and turboprops (like a King Air). These use propellers to generate thrust. A private jet, specifically, refers to a private aircraft powered by jet engines (turbojets or turbofans), such as a Gulfstream or a Bombardier Global. Jets are significantly faster, can fly at higher altitudes (often above 40,000 feet to avoid weather), and typically offer longer ranges and more luxurious cabin environments. In short, all private jets are private planes, but not all private planes are jets; the choice between the two usually depends on the traveler's budget, the required distance of the flight, and the speed at which they need to reach their destination.