The system for delivering volatile substances (1) comprises a container (2) inside of which a volatile substance is housed; a ventilation surface (3) placed in said container (2) provided with ventilation windows; and a fan (4) for creating the ventilation of the fragrance of said volatile substance; and is characterized in that said fan (4) is placed over said ventilation surface (3), suctioning the fragrance of said volatile substance.It permits to optimize the evaporation of the fragrance of the volatile substance, expending the least energy possible.