A passenger seat system for a transport means has an elongate carrier structure to be attached, fixedly with respect to a structure, and having a main extent axis and mutually spaced-apart raster openings on the carrier structure top side, raster openings projecting into at least one lateral delimitation of the carrier structure, and a seat having a seat frame, displaceable and arrestable on the carrier structure, a bottom side lying on the carrier structure, and a top side holding a seat surface. The seat frame has an arresting device on the bottom side and has an operating unit coupled to the arresting device. The operating unit is movable into an arresting position and an unlocking position. The arresting device has an arresting lever movable into an engagement position, for lateral engagement into a raster opening, and a release position, in which the arresting lever is released from the carrier structure.