9. Round | 25/04/2018 | Pohang Steelers | - | Jeju United | 0:1 | ||||
12. Round | 05/05/2018 | Incheon United | - | Jeju United | 1:2 | ||||
15. Round | 07/07/2018 | Suwon Bluewings | - | Jeju United | 2:3 | ||||
16. Round | 11/07/2018 | Jeju United | - | Gyeongnam FC | 0:0 | ||||
26. Round | 25/08/2018 | Jeju United | - | Incheon United | 0:0 | ||||
27. Round | 02/09/2018 | Pohang Steelers | - | Jeju United | 2:2 | ||||
29. Round | 23/09/2018 | Jeju United | - | Gangwon FC | 2:2 | ||||
30. Round | 26/09/2018 | Ulsan Hyundai FC | - | Jeju United | 3:2 | ||||
31. Round | 29/09/2018 | Jeju United | - | Jeonnam Dragons | 1:0 | ||||
32. Round | 07/10/2018 | Gyeongnam FC | - | Jeju United | 0:1 | ||||
33. Round | 20/10/2018 | Jeju United | - | FC Seoul | 1:0 |