Schedule:
| Game | Date | Away Team (Rank) | Away Score | Home Team (Rank) | Home Score | Game Status | Result | Margin |
|---|---|---|---|---|---|---|---|---|
| 1 | 2018-08-31 | Western Colorado | 10 | Idaho State | 45 | Final | W | 35 |
| 2 | 2018-09-15 | Idaho State | 23 | California | 45 | Final | L | -22 |
| 3 | 2018-09-22 | Idaho State (211) | 25 | North Dakota (213) | 21 | Final | W | 4 |
| 4 | 2018-09-29 | Northern Arizona (164) | 42 | Idaho State (163) | 56 | Final | W | 14 |
| 5 | 2018-10-06 | Idaho (193) | 28 | Idaho State (147) | 62 | Final | W | 34 |
| 6 | 2018-10-13 | Idaho State (136) | 37 | UC-Davis (114) | 44 | Final/OT | L | -7 |
| 7 | 2018-10-20 | Idaho State (139) | 41 | Liberty (81) | 48 | Final | L | -7 |
| 8 | 2018-10-27 | Montana State (171) | 17 | Idaho State (136) | 24 | Final | W | 7 |
| 9 | 2018-11-03 | Idaho State (133) | 48 | Portland State (192) | 45 | Final | W | 3 |
| 10 | 2018-11-10 | Idaho State (133) | 14 | Cal Poly (208) | 37 | Final | L | -23 |
| 11 | 2018-11-17 | Weber State (137) | 26 | Idaho State (147) | 13 | Final | L | -13 |