Home History
| Iceland 3 Deild | 2021/06/26 14:00 | Aegir Thorlakshofn v KFS | W | 0-1 |
| Iceland Cup | 2021/06/23 18:00 | KFS v Vikingur Olafsvik | W | 4-2 |
| Iceland 3 Deild | 2021/06/20 14:00 | KFS v IH Hafnarfjordur | D | 2-2 |
| Iceland 3 Deild | 2021/06/17 14:00 | Dalvik/Reynir v KFS | L | 2-0 |
| Iceland 3 Deild | 2021/06/13 14:00 | KFS v Augnablik Kopavogur | L | 1-2 |
| Iceland 3 Deild | 2021/06/05 14:00 | Ellidi v KFS | L | 7-0 |
| Iceland 3 Deild | 2021/05/29 18:00 | KFS v Hottur/Huginn | L | 1-2 |
| Iceland 3 Deild | 2021/05/21 18:00 | KFG Gardabaer v KFS | L | 2-0 |
Away History
| Iceland 3 Deild | 2021/06/27 14:00 | Sindri v Einherji | W | 2-0 |
| Iceland Cup | 2021/06/24 18:00 | Vikingur Reykjavik v Sindri | L | 3-0 |
| Iceland 3 Deild | 2021/06/20 14:00 | Tindastoll v Sindri | D | 3-3 |
| Iceland 3 Deild | 2021/06/17 12:00 | Sindri v Vidir Gardur | D | 1-1 |
| Iceland 3 Deild | 2021/06/12 14:00 | Sindri v Aegir Thorlakshofn | D | 1-1 |
| Iceland 3 Deild | 2021/06/05 14:00 | IH Hafnarfjordur v Sindri | W | 1-3 |
| Iceland 3 Deild | 2021/05/29 13:00 | Sindri v Dalvik/Reynir | W | 2-1 |
| Iceland 3 Deild | 2021/05/22 14:00 | Augnablik Kopavogur v Sindri | L | 4-1 |