Jones made all 14 of his free throws and Armand was 11 of 12 for the fourth-seeded Gaels (18-13), who will play top-seeded Niagara in Sunday's semifinals. Twelve of Jones' free throws came in the final 7:35, and consecutive layups by Jones and Taaj Ridley gave Iona an 82-77 lead with 59 seconds left.
The Gaels made 34 of 40 free throws (85 percent), while the fifth-seeded Golden Griffins (18-13) were 12 of 21 (57.1 percent) from the line.
Three-pointers nearly helped Canisius make up the difference. They shot 47.8 percent (11 of 23) behind the arc to Iona's 27.8 percent (5 of 18).