Brandon Paul scored 13 points, D.J. Richardson had 11 and Tyler Griffey added 10 as the Illini denied the tournament's host school a chance at shocking the college hoops world on consecutive nights. Illinois (5-0) shot 49 percent from the field and never trailed.
Illinois will play Butler on Wednesday night for the tournament title. Butler took down the eight-team field's only ranked team earlier Tuesday, beating No. 9 North Carolina 82-71.
Chaminade (3-2) will play UNC in the third-place game. The tiny Catholic school became a trending topic on Twitter after a rout of Texas on Monday night.