(Corrects spelling of name in paragraph 4 to Khan from Kahn) By Fiona Ortiz CHICAGO, Oct 6 (Reuters) - A Chicago-area man was charged on Monday with attempting to support a foreign terrorist organization after he was arrested on Saturday at O'Hare International Airport allegedly on his way to Syria to join the militant group Islamic State. Mohammed Hamzah Khan, 19, of the Chicago suburb of Bolingbrook, appeared before U.S. Magistrate Susan Cox in U.S. District Court in Chicago where he was advised of the federal charges against him. ...