8. Round | 22/04/2018 | Incheon United | - | Suwon Bluewings | 2:3 | ||||
9. Round | 25/04/2018 | Ulsan Hyundai FC | - | Incheon United | 2:1 | ||||
11. Round | 02/05/2018 | Pohang Steelers | - | Incheon United | 0:0 | ||||
12. Round | 05/05/2018 | Incheon United | - | Jeju United | 1:2 | ||||
13. Round | 13/05/2018 | Sangju Sangmu | - | Incheon United | 3:2 | ||||
15. Round | 07/07/2018 | Jeonbuk FC | - | Incheon United | 3:3 | ||||
17. Round | 14/07/2018 | Gyeongnam FC | - | Incheon United | 3:0 | ||||
18. Round | 18/07/2018 | Suwon Bluewings | - | Incheon United | 5:2 | ||||
19. Round | 22/07/2018 | Incheon United | - | FC Seoul | 2:1 | ||||
20. Round | 28/07/2018 | Jeonnam Dragons | - | Incheon United | 1:3 | ||||
21. Round | 04/08/2018 | Incheon United | - | Pohang Steelers | 1:2 | ||||
22. Round | 11/08/2018 | Daegu FC | - | Incheon United | 2:1 | ||||
25. Round | 22/08/2018 | Incheon United | - | Jeonnam Dragons | 3:1 | ||||
26. Round | 25/08/2018 | Jeju United | - | Incheon United | 0:0 | ||||
27. Round | 02/09/2018 | Incheon United | - | Ulsan Hyundai FC | 3:2 |