dep.

剑桥词典

written abbreviation for depart or departure (used in timetables to show the time at which a bus , train , or aircraft leaves a place )
離開；出發（depart或departure的縮寫）
Flight BA174, dep. Rio de Janeiro 21.45. BA174 次航班21點45分從裡約熱內盧起飛。 返回 dep.