Unique camera system makes it so you can fly a plane and look around at the same time.
Planes can be put in circular holding patterns and will climb on their own power.
Realistic handling of planes makes flight much simpler.You can even customize your planes by giving them different propellers and engines, which affect their flight characteristics. Controls are also tailored to provide a simpler means of controlling planes than the current mouse-yoke standard, which allows you to look around as you fly. To do this physics and aerodynamics are used, taking into account thrust, drag, lift, prop pitch, and much more. Minecraft Flight Simulator aim to change all this, by introducing planes that handle like actual planes. Even the elytra doesn’t take into account true aerodynamics.
Realistic flight in Minecraft has never really been implemented.