| 1. Round | 18/08/2018 | RC Celta | - | Espanyol Barcelona | 1:1 | ||||
| 2. Round | 27/08/2018 | Levante UD | - | RC Celta | 1:2 | ||||
| 4. Round | 17/09/2018 | Girona FC | - | RC Celta | 3:2 | ||||
| 6. Round | 26/09/2018 | Valencia CF | - | RC Celta | 1:1 | ||||
| 8. Round | 07/10/2018 | Sevilla FC | - | RC Celta | 2:1 | ||||
| 9. Round | 19/10/2018 | RC Celta | - | CD Alavés | 0:1 | ||||
| 10. Round | 27/10/2018 | RC Celta | - | SD Eibar | 4:0 | ||||
| 18. Round | 07/01/2019 | RC Celta | - | Athletic Club | 1:2 | ||||
| 19. Round | 11/01/2019 | Rayo Vallecano | - | RC Celta | 4:2 |
Germany
Spain