Kitchen extractor hood with directional flow having a box body, an extractor fan with at least one inlet in communication with an internal chamber of the box body, a delivery fan with an inlet in communication with the internal chamber of the box body and a delivery outlet in communication with a delivery conduit, a distributor disposed at the end of the delivery conduit and deflector means disposed above the distributor in such a way to direct a delivery airflow from the delivery conduit towards at least one preferential direction with respect to the axis of the distributor, in such a way that at least two airflows with different flow rate come out from the distributor, wherein the airflow with the higher flow rate is directed towards a burner of the cooktop having a higher power than the other burners.