An aircraft exhaust vent assembly for venting an exhaust gas through a window opening formed in an airplane fuselage. The aircraft exhaust vent assembly has an enclosure connected to the airplane fuselage and at least partially disposed within the window opening. An inlet is formed in the enclosure and connectable to an exhaust gas source for directing the exhaust gas into the enclosure. An outlet is formed in the enclosure for venting said exhaust gas to the exterior of the airplane fuselage. An outlet flap is connected to the enclosure for movement between a first position and a second position. In the first position, the outlet flap substantially seals the outlet in the enclosure when the exhaust gas is not supplied to the enclosure. In the second position, the outlet flap does not seal the outlet in the enclosure to allow for venting of the exhaust gas to the exterior of the airplane fuselage.