A pack for smoking articles comprising: a group of smoking articles wrapped by an inner wrap and housed in a rigid outer container provided with a lid hinged to the outer container; a collar partially projecting from an open upper end; and a locking system comprising: a support element arranged in the outer container in contact with the collar and provided with two coupling wings, which project movably outwards to move closer or away from each other; and two first through openings, each obtained through a wall of the lid, houses at least a portion of a corresponding coupling wing, to activate the locking system, preventing the lid from rotating from the closed to the open position. An external action of the user releases the coupling wing to deactivate the locking system. The locking system can be reactivated by rotating the lid from the open position to the closed position.