| 9/1/2018 | Idaho | 13 | at | Fresno State (12-2) | 79 | at MW | ||
| 9/8/2018 | Western New Mexico (0-10) | 10 | at | Idaho | 56 | LSC (D2) | ||
| 9/22/2018 | Idaho | 21 | at | UC Davis (10-3,7-2) | 44 | |||
| 9/29/2018 | Portland State (4-7,3-4) | 7 | at | Idaho | 20 | |||
| 10/6/2018 | Idaho | 28 | at | Idaho State (6-5,4-3) | 62 | |||
| 10/13/2018 | Idaho | 23 | at | Montana State (8-5,5-3) | 24 | |||
| 10/20/2018 | Southern Utah (1-10,1-7) | 12 | at | Idaho | 31 | |||
| 10/27/2018 | Idaho | 14 | at | Eastern Washington (12-3,9-1) | 38 | |||
| 11/3/2018 | North Dakota (6-5) | 27 | at | Idaho | 31 | Ind1AA | ||
| 11/10/2018 | Montana (6-5,4-3) | 46 | at | Idaho | 27 | |||
| 11/17/2018 | Idaho | 10 | at | Florida (10-3) | 63 | at SEC |
| vs Idaho | vs Other Opponents | Idaho compared to OOs | |
| Record: | 7-4 | 68-54 | |
| Points Scored: | 37.45 | 31.47 | -5.98 |
| Points Allowed: | 24.91 | 28.50 | -3.59 |
| Margin: | 12.54 | 2.97 | -9.57 |
| Total Points: | 62.36 | 59.97 | 2.39 |