| 3. Round | 21/01/2021 | UD Ibiza | - | Athletic Club | 1:2 |  |
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| Round of 16 | 28/01/2021 | CD Alcoyano | - | Athletic Club | 1:2 | ||||
| Quarter-finals | 04/02/2021 | Real Betis | - | Athletic Club | 1:4 pso | |
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| Semi-finals | 11/02/2021 | Athletic Club | - | Levante UD | 1:1 | ||||
| Semi-finals | 04/03/2021 | Levante UD | - | Athletic Club | 1:2 aet | ||||
| Final | 17/04/2021 | FC Barcelona | - | Athletic Club | 4:0 | |
Spain