| Season | Team | Competition | MP | G | A | Rating | ||
|---|---|---|---|---|---|---|---|---|
| 2025/2026 | KA Akureyri | Conference League | 2 | 1 | 0 | 0 | 0 | 7.0 |
| 2023/2024 | CSKA 1948 Sofia | Europa Conference League | 2 | 0 | 0 | 0 | 0 | – |
| 2018/2019 | Maccabi Tel Aviv | Europa League | 8 | 3 | 0 | 0 | 0 | – |
| 2017/2018 | Maccabi Tel Aviv | Europa League | 5 | 0 | 0 | 1 | 0 | 6.4 |
| 2016/2017 | Maccabi Tel Aviv | Europa League | 5 | 1 | 0 | 1 | 0 | 6.6 |
| Total | 22 | 5 | 0 | 2 | 0 | – | ||
| Date | From | To | Type | |
|---|---|---|---|---|
| 04 May 2024 | CSKA 1948 Sofia | KA Akureyri | Free agent | |
| 07 Jan 2023 | Atromitos | CSKA 1948 Sofia | Free agent | |
| 08 Jan 2022 | Valerenga | Atromitos | Free agent | |
| 09 Oct 2020 | FK Rostov | Valerenga | Free agent | |
| 08 Mar 2020 | Yeni Malatyaspor | FK Rostov | Return from loan | |
| - | FK Rostov | Yeni Malatyaspor | Loan | |
| 01 Nov 2020 | Rubin Kazan | FK Rostov | Return from loan | |
| - | FK Rostov | Rubin Kazan | Loan | |
| - | Hammarby | FK Rostov | Return from loan | |
| - | FK Rostov | Hammarby | Loan | |
| - | Maccabi Tel Aviv | FK Rostov | Transfer | |
| - | Malmo FF | Maccabi Tel Aviv | Transfer | |
| - | Jiangsu Suning | Malmo FF | Transfer | |
| - | Valerenga | Jiangsu Suning | Transfer | |
| 01 Jan 2014 | Fylkir | Valerenga | Transfer | |
| 03 Mar 2013 | Selfoss | Fylkir | Transfer | |
| - | Vestmannaeyjar | Selfoss | Transfer | |
| - | Selfoss | Vestmannaeyjar | Free agent |
O. Kjartansson Vidar career history shows progression across clubs and competitions, including club timeline, national team appearances and overall career totals.