| 1. Jornada | 28.02.2021 | Pohang Steelers | - | Incheon United | 2:1 | ||||
| 8. Jornada | 07.04.2021 | Incheon United | - | Suwon Bluewings | 0:0 | ||||
| 9. Jornada | 11.04.2021 | Jeonbuk FC | - | Incheon United | 5:0 | ||||
| 10. Jornada | 17.04.2021 | Incheon United | - | Jeju United | 0:3 | ||||
| 11. Jornada | 21.04.2021 | Seongnam FC | - | Incheon United | 1:3 |  |
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| 12. Jornada | 25.04.2021 | Incheon United | - | Ulsan Hyundai FC | 0:0 | ||||
| 13. Jornada | 02.05.2021 | Incheon United | - | Gangwon FC | 1:0 | ||||
| 14. Jornada | 08.05.2021 | Daegu FC | - | Incheon United | 3:0 | ||||
| 15. Jornada | 11.05.2021 | Incheon United | - | Pohang Steelers | 1:1 | ||||
| 18. Jornada | 21.05.2021 | Suwon FC | - | Incheon United | 2:2 | ||||
| 19. Jornada | 29.05.2021 | Incheon United | - | Jeonbuk FC | 1:1 |
Corea del Sur