| Temporada | Equipo | Competición | PJ | G | A | Nota | ||
|---|---|---|---|---|---|---|---|---|
| 2025/2026 | Brann | NM Cup | 3 | 1 | 0 | 0 | 0 | – |
| 2025/2026 | Hertha Berlin | DFB Pokal | 3 | 1 | 0 | 0 | 0 | 6.9 |
| 2024/2025 | Hertha Berlin | DFB Pokal | 2 | 0 | 0 | 0 | 0 | 6.3 |
| 2023/2024 | Leuven | Belgian Cup | 3 | 0 | 2 | 1 | 0 | – |
| 2022/2023 | Leuven | Belgian Cup | 2 | 0 | 0 | 0 | 0 | – |
| 2021/2022 | Aarhus | Landspokal Cup | 2 | 1 | 0 | 0 | 0 | – |
| 2020/2021 | Aarhus | Landspokal Cup | 5 | 1 | 0 | 0 | 0 | – |
| 2019/2020 | Aarhus | Landspokal Cup | 3 | 0 | 0 | 1 | 0 | – |
| 2018/2019 | Vendsyssel | Landspokal Cup | 3 | 0 | 0 | 0 | 0 | – |
| 2017/2018 | Fulham U21 | EFL Trophy | 3 | 1 | 0 | 0 | 0 | – |
| 2016/2017 | Fulham U23 | Premier League Cup | 2 | 2 | 0 | 0 | 0 | – |
| Total | 31 | 7 | 2 | 2 | 0 | – | ||
| Fecha | Desde | Hacia | Tipo | |
|---|---|---|---|---|
| - | Brann | Hertha Berlin | Return from loan | |
| 02 feb 2026 | Hertha Berlin | Brann | Loan | |
| - | Leuven | Hertha Berlin | Transfer | |
| 07 abr 2022 | Aarhus | Leuven | Free agent | |
| 07 ene 2019 | Fulham | Aarhus | Transfer | |
| - | Vendsyssel | Fulham | Return from loan | |
| - | Fulham | Vendsyssel | Loan | |
| 09 feb 2015 | Kopavogur | Fulham | Transfer |
J. Thorsteinsson career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.