A device to assist in the piloting of an aircraft includes a display unit to present, in a display window of a screen, an information presentation illustrating a vertical plane along a flight path which represents a flight plan and which is formed so as to position the display window altitude-wise, and to further position a symbol illustrating the aircraft vertically in the display window, where the positioning of the display window and the symbol are based on the current flight phase, the current altitude and an altitude relative to the flight path.
