| 9/4/2021 | Simon Fraser (1-7) | 0 | at | Idaho | 68 | GNWAC (D2) | ||
| 9/11/2021 | Idaho | 14 | at | Indiana (2-10) | 56 | at B10 | ||
| 9/18/2021 | Idaho | 0 | at | Oregon State (7-6) | 42 | at P12 | ||
| 10/2/2021 | Idaho | 20 | at | UC Davis (8-4,5-3) | 27 | |||
| 10/9/2021 | Portland State (5-6,4-4) | 35 | at | Idaho | 42 | |||
| 10/16/2021 | Idaho | 21 | at | Eastern Washington (10-3,6-3) | 71 | |||
| 10/23/2021 | Montana (10-3,7-2) | 34 | at | Idaho | 14 | |||
| 10/30/2021 | Northern Arizona (5-6,4-4) | 38 | at | Idaho | 31 | |||
| 11/6/2021 | Southern Utah (1-10,0-8) | 24 | at | Idaho | 42 | |||
| 11/13/2021 | Idaho | 13 | at | Montana State (12-3,7-1) | 20 | |||
| 11/20/2021 | Idaho | 14 | at | Idaho State (1-10,1-7) | 0 |
| vs Idaho | vs Other Opponents | Idaho compared to OOs | |
| Record: | 7-4 | 55-64 | |
| Points Scored: | 31.55 | 25.45 | -6.10 |
| Points Allowed: | 25.36 | 28.07 | -2.71 |
| Margin: | 6.19 | -2.62 | -8.81 |
| Total Points: | 56.91 | 53.52 | 3.39 |