Why does the airplane need windows?
There are times when the pilots need to look outside. It is still safer to do this with windows instead of using cameras that can fail.
Why are airplane windows curved? A: This Q is about windows that are NOT flat. Usually curved windows are designed to fit the shape of the airplane so as make the airplane more aerodynamic and not be boxy. Why are airplane windows rounded on the corners? A: One of the first British jets began to crash for no reason. This airplane, the Comet, had large square windows. The investigation discovered that the airplane cracked open…
I suppose they're smaller because they have to endure harsh and extended periods of change in pressure that windows on a bus don't. I suppose that to make an airplane window as large as a bus window that could endure the pressures, the window would have to be made out of either a very heavy material, or a very expensive material, which in both cases would make them prohibitive for installing on an airplane.
Typically, operating an airplane is called "flying" and it requires a private pilot license (at minimum) from the FAA. - - - - - It depends on the kind of airplane it is, and what you plan to do with it. The licenses and certificates you need to fly a Piper Cherokee (single-engine piston airplane that isn't pressurized) are far different from what you need to fly a 747.