| 17. Jornada | 14.07.2021 | FC Seoul | - | Incheon United | 0:1 | ||||
| 21. Jornada | 23.07.2021 | Suwon Bluewings | - | Incheon United | 1:2 | ||||
| 22. Jornada | 31.07.2021 | Jeju United | - | Incheon United | 1:4 | ||||
| 25. Jornada | 15.08.2021 | Gwangju FC | - | Incheon United | 1:0 | ||||
| 20. Jornada | 18.08.2021 | Incheon United | - | Seongnam FC | 1:0 | ||||
| 28. Jornada | 29.08.2021 | Ulsan Hyundai FC | - | Incheon United | 3:2 | ||||
| 29. Jornada | 11.09.2021 | Incheon United | - | Jeju United | 1:2 | ||||
| 30. Jornada | 19.09.2021 | Incheon United | - | Seongnam FC | 0:1 | ||||
| 31. Jornada | 22.09.2021 | FC Seoul | - | Incheon United | 0:0 | ||||
| 32. Jornada | 25.09.2021 | Jeonbuk FC | - | Incheon United | 2:0 | ||||
| 33. Jornada | 02.10.2021 | Incheon United | - | Suwon Bluewings | 0:1 | ||||
| 26. Jornada | 06.10.2021 | Incheon United | - | Gangwon FC | 0:1 | ||||
| 24. Jornada | 24.10.2021 | Pohang Steelers | - | Incheon United | 0:1 |  |
Corea del Sur