Once Deportivo: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2025-01-04 | Jorge Cruz | Once Deportivo | FAS | — |
| 2025-01-01 | Josué Rivera | Once Deportivo | ADI Metapán | Free |
| 2023-07-01 | Marcelo Díaz | Once Deportivo | CD Águila | Free |
| 2023-01-01 | Melvin Cartagena | Once Deportivo | CD Águila | Free |
| 2022-07-01 | Julio Sibrián | Once Deportivo | CD Águila | Free |
| 2022-01-01 | Josué Rivera | FAS | Once Deportivo | Free |
| 2021-02-04 | Jorge Cruz | Alianza FC | Once Deportivo | — |
| 2021-02-01 | Elvin Alvarado | Once Deportivo | Alianza FC | Free |
| 2020-07-01 | Melvin Cartagena | FAS | Once Deportivo | Free |
| 2020-07-01 | Marcelo Díaz | Alianza FC U20 | Once Deportivo | Free |
| 2020-07-01 | Julio Sibrián | Sonsonate | Once Deportivo | Free |
| 2020-01-01 | Elvin Alvarado | CD Águila | Once Deportivo | Free |
| 2019-09-12 | Juan Vásquez | Once Deportivo | CD América | — |
| 2019-07-01 | Juan Vásquez | Unknown | Once Deportivo | — |