The actor and wife Katie Holmes always take four-year-old Suri with them when working and after travelling to countries including Japan, Brazil, Australia and England, the youngster has developed a fear of planes after constant moving between time zones severely disrupted her routine. A source said: "Suri`s sleep patterns have been seriously disturbed from all the travelling. It`s why you often see her when she`s abroad being carried with a blanket as though she`s a baby. "It has got to the stage where she screams whenever she sees a plane. It`s an open secret she doesn`t like flying and has trouble sleeping for days after she`s been on a flight." Suri reportedly made her feelings known to her parents during a recent trip to Prague, where Tom was scouting locations for `Mission Impossible IV`. A source explained: "Suri kept saying, `Home now, home now.` Suri`s a homebody and she`s not afraid to let everyone know."