Disclosed herein is a washing machine capable of suppressing noise during spin-drying caused by a pressure difference in a tub. The washing machine may include a case comprising a laundry loading/unloading opening through which laundry is introduced, a door mounted at the case to open or close the laundry loading/unloading opening, a tub disposed inside the case, a drum rotatably disposed inside the tub, and an air inflow channel configured to guide air to flow toward a central portion of the drum in which a pressure decreases while the drum rotates.