An aircraft luggage locker is disposed in a compartment under a seat cushion which pivots about a horizontal axis. The locker includes a rack to receive luggage has a back wall from which extends a bottom wall and an opening at the end opposite the back wall. The rack is movable between a lying down position in which the back is in a generally vertical plane, the bottom wall is in a generally horizontal plane, and the opening is facing a wall of the compartment, and an inclined position in which the bottom wall is inclined to the horizontal and the opening of the rack is in a raised position relative to the back. Movement of the rack between the lying down position and the inclined position is a combination of a movement in translation in a horizontal plane and rotation about a horizontal axis perpendicular to the direction of movement in translation of the rack.