| 4. Round | 24/09/2018 | Panionios GSS | - | Olympiakos Piraeus | 0:1 | ||||
| 5. Round | 30/09/2018 | Apollon Smyrnis | - | Panionios GSS | 0:2 | ||||
| 6. Round | 06/10/2018 | Panionios GSS | - | Aris Saloniki | 1:0 | ||||
| 7. Round | 20/10/2018 | Panathinaikos | - | Panionios GSS | 1:0 | ||||
| 8. Round | 28/10/2018 | Panionios GSS | - | Atromitos | 2:2 | ||||
| 9. Round | 03/11/2018 | Panionios GSS | - | Panetolikos | 3:0 | ||||
| 10. Round | 10/11/2018 | Xanthi FC | - | Panionios GSS | 0:1 | ||||
| 11. Round | 26/11/2018 | Panionios GSS | - | Lamia | 1:0 | ||||
| 12. Round | 01/12/2018 | AE Lárissa | - | Panionios GSS | 4:2 | ||||
| 13. Round | 10/12/2018 | Panionios GSS | - | Levadiakos | 1:1 | ||||
| 14. Round | 15/12/2018 | PAS Giannina | - | Panionios GSS | 3:1 | ||||
| 16. Round | 12/01/2019 | OFI Heraklion | - | Panionios GSS | 1:1 | ||||
| 17. Round | 19/01/2019 | PAOK Saloniki | - | Panionios GSS | 3:0 | ||||
| 15. Round | 30/01/2019 | Panionios GSS | - | Asteras Tripolis | 1:0 | ||||
| 19. Round | 02/02/2019 | Olympiakos Piraeus | - | Panionios GSS | 4:0 | ||||
| 20. Round | 09/02/2019 | Panionios GSS | - | Apollon Smyrnis | 0:1 | ||||
| 21. Round | 17/02/2019 | Aris Saloniki | - | Panionios GSS | 1:1 | ||||
| 22. Round | 24/02/2019 | Panionios GSS | - | Panathinaikos | 2:0 |
Slovenia