| 1. Round | 09/05/2020 | Incheon United | - | Daegu FC | 0:0 | ||||
| 2. Round | 17/05/2020 | Seongnam FC | - | Incheon United | 0:0 | ||||
| 3. Round | 23/05/2020 | Suwon Bluewings | - | Incheon United | 1:0 | ||||
| 4. Round | 31/05/2020 | Incheon United | - | Pohang Steelers | 1:4 | ||||
| 5. Round | 05/06/2020 | Incheon United | - | Gangwon FC | 1:2 | ||||
| 6. Round | 13/06/2020 | Jeonbuk FC | - | Incheon United | 1:0 | ||||
| 7. Round | 17/06/2020 | Gwangju FC | - | Incheon United | 2:1 | ||||
| 8. Round | 21/06/2020 | Incheon United | - | Busan IPark | 0:1 | ||||
| 9. Round | 27/06/2020 | FC Seoul | - | Incheon United | 1:0 | ||||
| 10. Round | 04/07/2020 | Ulsan Hyundai FC | - | Incheon United | 4:1 | ||||
| 16. Round | 16/08/2020 | Daegu FC | - | Incheon United | 0:1 | ||||
| 18. Round | 29/08/2020 | Sangju Sangmu | - | Incheon United | 3:1 | ||||
| 21. Round | 16/09/2020 | Incheon United | - | FC Seoul | 1:0 |
South Korea