| Temporada | Equipo | Competición | PJ | G | A | Nota | ||
|---|---|---|---|---|---|---|---|---|
| 2025/2026 | Wigan | FA Cup | 2 | 0 | 0 | 1 | 0 | 6.2 |
| 2025/2026 | Wigan | EFL Trophy | 1 | 1 | 0 | 0 | 0 | 7.9 |
| 2025/2026 | Wigan | EFL Cup | 2 | 0 | 0 | 1 | 0 | 6.5 |
| 2024/2025 | Accrington | FA Cup | 2 | 0 | 0 | 0 | 0 | – |
| 2024/2025 | Accrington | EFL Trophy | 1 | 0 | 0 | 0 | 0 | 6.7 |
| 2024/2025 | Accrington | EFL Cup | 1 | 0 | 0 | 0 | 0 | 6.3 |
| 2023/2024 | Dundee FC | Scottish Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2022/2023 | Burnley U21 | Premier League Cup | 1 | 1 | 0 | 0 | 0 | – |
| 2022/2023 | Burnley | EFL Cup | 2 | 0 | 0 | 0 | 0 | 6.3 |
| 2021/2022 | Burnley U23 | Premier League Cup | 1 | 1 | 0 | 0 | 0 | – |
| 2019 | Galway | League Cup | 1 | 0 | 0 | 1 | 0 | – |
| Total | 15 | 3 | 0 | 3 | 0 | – | ||
| Fecha | Desde | Hacia | Tipo | |
|---|---|---|---|---|
| 07 ene 2025 | Burnley | Wigan | Transfer | |
| - | Northampton | Burnley | Return from loan | |
| 02 mar 2025 | Burnley | Northampton | Loan | |
| - | Accrington | Burnley | Return from loan | |
| 08 ago 2024 | Burnley | Accrington | Loan | |
| - | Dundee FC | Burnley | Return from loan | |
| 01 ene 2024 | Burnley | Dundee FC | Loan | |
| - | St Johnstone | Burnley | Return from loan | |
| - | Burnley | St Johnstone | Loan | |
| - | Bradford City | Burnley | Return from loan | |
| - | Burnley | Bradford City | Loan | |
| 02 ene 2021 | Galway | Burnley | Transfer |
D. Costelloe career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.