Well, we probably supersonic and hypersonic aircraft that can fly around the world in two hours. The aircraft will likely slow as transparent skin around the hull is a window. Now that would be something for air passengers. It can be like sitting in a giant flying carpet that travels at the speed of sound. These aircraft will look like a giant flying wing, while hypersonic is more like a flying arrow.
These aircraft will be very light, very strong, and completely secure. Chances are you are not a human pilot or co-pilot, because you can fly autonomously, and the distance to the airspace of the airport, where they will land to enter. It might be possible that you are staying in his chair, and that group of people with robot will be transferred to a trolley to and from the airport, where you disembark.
The private aircraft can not take off on a runway as we know channels that exist today. Instead, the aircraft will be connected to some kind of transport mechanism, advanced very fast air velocity, and launched into the air to fuel and planes to save weight. Today, you do not want to fly in unmanned aircraft, but the general public feel safer with a robot of a human pilot Pilot 35 years from now.