Brazil: Carioca U20 - Taca Guanabara - Play Offs |
| Semi-finals - 2nd leg | Flamengo RJ U20 | Boavista U20 | 2:0 (1:0, 1:0) | details | 26.09.2024 |
| Semi-finals - 1st leg | Boavista U20 | Flamengo RJ U20 | 1:1 (1:1, 0:0) | details | 21.09.2024 |
| Quarter-finals - 2nd leg | Flamengo RJ U20 | Nova Iguacu U20 | 0:1 (0:0, 0:1) | details | 14.09.2024 |
| Quarter-finals - 1st leg | Nova Iguacu U20 | Flamengo RJ U20 | 0:2 (0:1, 0:1) | details | 07.09.2024 |
Brazil: Carioca U20 - Taca Guanabara |
| 11. Round | Flamengo RJ U20 | Nova Iguacu U20 | 1:0 (0:0, 1:0) | details | 01.09.2024 |
Brazil: Brasileiro U20 - Play Offs |
| Quarter-finals | Flamengo RJ U20 | Fortaleza U20 | 0:1 (0:0, 0:1) | details | 29.08.2024 |
World: Intercontinental Cup U20 - Main |
| Final | Flamengo RJ U20 | Olympiacos Piraeus U19 | 2:1 (0:0, 2:1) | details | 24.08.2024 |
Brazil: Brasileiro U20 - Main |
| 19. Round | Flamengo RJ U20 | Internacional U20 | 2:2 (0:1, 2:1) | details | 21.08.2024 |
| 6. Round | Gremio U20 | Flamengo RJ U20 | 2:3 (1:0, 1:3) | details | 17.08.2024 |
| 18. Round | RB Bragantino U20 | Flamengo RJ U20 | 0:2 (0:0, 0:2) | details | 14.08.2024 |
| 17. Round | Ceara U20 | Flamengo RJ U20 | 0:2 (0:1, 0:1) | details | 08.08.2024 |
Brazil: Copa Rio U20 - Play Offs |
| Final - 2nd leg | Vasco U20 | Flamengo RJ U20 | 4:1 (3:1, 1:0) | details | 28.04.2024 |
| Final - 1st leg | Flamengo RJ U20 | Vasco U20 | 0:1 (0:1, 0:0) | details | 20.04.2024 |
| Semi-finals - 2nd leg | Fluminense U20 | Flamengo RJ U20 | 0:1 (0:0, 0:1) | details | 14.04.2024 |
| Semi-finals - 1st leg | Flamengo RJ U20 | Fluminense U20 | 1:1 (0:1, 1:0) | details | 06.04.2024 |
Brazil: Copa Rio U20 - Main |
| Group A - 5. Round | Flamengo RJ U20 | Portuguesa RJ U20 | 4:0 (2:0, 2:0) | details | 30.03.2024 |
South America: Copa Libertadores U20 - Play Offs |
| Final | Boca Juniors U20 | Flamengo RJ U20 | 1:2 (1:2, 0:0) | details | 17.03.2024 |
| Semi-finals | Rosario Central U20 | Flamengo RJ U20 | 1:2 (1:0, 0:2) | details | 14.03.2024 |
South America: Copa Libertadores U20 - Main |
| Group C - 3. Round | Sporting Cristal U20 | Flamengo RJ U20 | 1:4 (0:3, 1:1) | details | 10.03.2024 |
| Group C - 2. Round | Flamengo RJ U20 | Aucas U20 | 2:1 (0:0, 2:1) | details | 07.03.2024 |
| Group C - 1. Round | Defensor Sp. U20 | Flamengo RJ U20 | 0:1 (0:1, 0:0) | details | 04.03.2024 |