1. Round | 01/03/2018 | Jeju United | - | FC Seoul | 0:0 | ||||
2. Round | 10/03/2018 | Gyeongnam FC | - | Jeju United | 2:0 | ||||
5. Round | 08/04/2018 | Jeju United | - | Sangju Sangmu | 0:0 | ||||
6. Round | 11/04/2018 | Jeonnam Dragons | - | Jeju United | 0:3 | ||||
7. Round | 14/04/2018 | Jeju United | - | Incheon United | 4:2 | ||||
10. Round | 28/04/2018 | Daegu FC | - | Jeju United | 1:4 | ||||
19. Round | 21/07/2018 | Gangwon FC | - | Jeju United | 3:1 | ||||
20. Round | 29/07/2018 | Jeju United | - | Ulsan Hyundai FC | 1:1 | ||||
22. Round | 11/08/2018 | Jeju United | - | Pohang Steelers | 0:0 | ||||
24. Round | 18/08/2018 | Sangju Sangmu | - | Jeju United | 1:1 | ||||
27. Round | 02/09/2018 | Pohang Steelers | - | Jeju United | 2:2 | ||||
25. Round | 08/09/2018 | Jeju United | - | Suwon Bluewings | 0:0 | ||||
28. Round | 15/09/2018 | Jeonbuk FC | - | Jeju United | 4:0 | ||||
29. Round | 23/09/2018 | Jeju United | - | Gangwon FC | 2:2 | ||||
31. Round | 29/09/2018 | Jeju United | - | Jeonnam Dragons | 1:0 | ||||
32. Round | 07/10/2018 | Gyeongnam FC | - | Jeju United | 0:1 |