Aircraft seats are provided which may be convertible between a seating condition and a bedding condition. According to exemplary embodiments, aircraft seats comprise a seat bottom, a seat back, and a pair of arm rests positioned laterally with respect to the seat bottom, the seat back being mounted to the seat bottom for pivotal movements between an upright position (wherein the seat back extends vertically upwardly relative to the seat bottom) and a reclined position (wherein the seat back extends substantially horizontally relative to the seat bottom), and each of arm rests being coupled to the seat back and the seat bottom so as to be moveable between raised and lowered positions in response to the seat back being pivoted from the upright position to the reclined position, respectively. Each of the arm rests may define an upper surface which is in a downwardly sloped disposition when the arm rest is in the raised position thereof and is in a substantially horizontal disposition when the arm rest is in the lowered position thereof. In this manner, the arm rests may be moved to a more comfortable disposition when the aircraft seat is converted from a seating condition to a bedding condition.