| 1er tour | 12.07.2018 | ÍBV Vestmannaeyjar | - | Sarpsborg 08 | 0:4 | ||||
| 1er tour | 19.07.2018 | Sarpsborg 08 | - | ÍBV Vestmannaeyjar | 2:0 | ||||
| 2e tour | 26.07.2018 | FC St. Gallen | - | Sarpsborg 08 | 2:1 |  |
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| 2e tour | 02.08.2018 | Sarpsborg 08 | - | FC St. Gallen | 1:0 | ||||
| 3e tour | 09.08.2018 | Sarpsborg 08 | - | HNK Rijeka | 1:1 |  |
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| 3e tour | 16.08.2018 | HNK Rijeka | - | Sarpsborg 08 | 0:1 | ||||
| Play-offs | 23.08.2018 | Sarpsborg 08 | - | Maccabi Tel Aviv | 3:1 | ||||
| Play-offs | 30.08.2018 | Maccabi Tel Aviv | - | Sarpsborg 08 | 2:1 |
Norvège