DOes United ReQuiRe 24 houR cheEck-In?

＠ＡＳＫ！ＡＮＴＨＩＮＧ！ＡＴ８０１\８５５\５９０５ＡＮＹＴＩＭＥ，Ｍｉｎｉｍｕｍｒｅｑｕｉｒｅｄｃｈｅｃｋ－ｉｎｔｉｍｅｗｉｔｈｃａｒｒｙ－ｏｎｂａｇｇａｇｅｂａｇｇａｇｅ：３０ｍｉｎｕｔｅｓｂｅｆｏｒｅｓｃｈｅｄｕｌｅｄｄｅｐａｒｔｕｒｅｔｉｍｅｆｏｒＵＳｄｏｍｅｓｔｉｃｆｌｉｇｈｔｓ＊６０ｍｉｎｕｔｅｓｂｅｆｏｒｅｓｃｈｅｄｕｌｅｄｄｅｐａｒｔｕｒｅｔｉｍｅｆｏｒｉｎｔｅｒｎａｔｉｏｎａｌｆｌｉｇｈｔｓｔｏ／ｆｒｏｍｔｈｅＵＳ＊