departurede·par·ture /dɪˈpɑːtʃə-ˈpɑːrtʃər/ noun1[countableC, uncountableU] an act of leaving a place, especially at the start of a journeyI saw Simon shortly before his departure for Russia.
2[countableC, uncountableU] an act of leaving an organization or positionHis sudden departure from the political scene took everyone by surprise.
3[countableC] a flight, train etc that leaves at a particular timeThere are several departures a day for New York.