| Season | Team | Competition | MP | G | A | Rating | ||
|---|---|---|---|---|---|---|---|---|
| 2026 | Valur | Icelandic Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2026 | Valur | League Cup | 1 | 1 | 0 | 0 | 0 | – |
| 2025 | Valur | Icelandic Cup | 5 | 0 | 0 | 0 | 0 | – |
| 2025 | Valur | League Cup | 2 | 0 | 0 | 0 | 0 | – |
| 2024 | Valur | Icelandic Cup | 2 | 0 | 0 | 0 | 0 | – |
| 2024 | Valur | Super Cup | 1 | 0 | 0 | 0 | 0 | – |
| 2024 | Valur | League Cup | 5 | 0 | 0 | 0 | 0 | – |
| 2024 | Valur | Reykjavik Cup | 3 | 0 | 0 | 0 | 0 | – |
| 2023 | Valur | Icelandic Cup | 2 | 1 | 0 | 0 | 0 | – |
| 2023 | Valur | League Cup | 7 | 2 | 0 | 2 | 0 | – |
| 2023 | Fjolnir | Reykjavik Cup | 2 | 1 | 0 | 0 | 0 | – |
| 2021/2022 | Empoli U19 | Coppa Italia Primavera | 1 | 1 | 0 | 0 | 0 | – |
| 2021 | Fjolnir | Icelandic Cup | 3 | 4 | 0 | 0 | 0 | – |
| 2021 | Fjolnir | League Cup | 1 | 1 | 0 | 0 | 0 | – |
| Total | 36 | 11 | 0 | 2 | 0 | – | ||
| Date | From | To | Type | |
|---|---|---|---|---|
| 02 Mar 2023 | Fjolnir | Valur | ||
| 05 Dec 2022 | Empoli | Fjolnir | Return from loan | |
| - | Fjolnir | Empoli | Loan |
L. Heimisson career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.