Abstract: A passenger seat arrangement comprises at least one first seat arranged at a first lower level, and at least one second seat arranged at a second elevated level. Each of the first and the second seats comprises a supporting surface for supporting a passenger which is movable between an upright seating position and a reclined lying position. At least one of the first and the second seats is constructed in such a manner that a movement of its supporting surface from the upright seating position into the reclined lying position results in an increase of a distance between the supporting surface of the first seat and the supporting surface of the second seat.