Flournoy attended Homewood-Flossmoor High School in Illinois. He was not very highly recruited and chose to join Central Missouri.
Flournoy redshirted in 2018, seeing no game action. In 2019, he played 10 games, making 17 catches for 170 yards. He then transferred to Iowa Western CC.
Flournoy was Iowa Western’s top receiver in 2021 with 32 receptions for 545 yards and five touchdowns. He transferred again after the 2021 season and went to Southeast Missouri State.
In 2022, he started 12 games, making 61 receptions for 984 yards and 7 touchdowns. In his 2023 season, he played 10 games, hauling in 57 receptions for 839 yards and 6 touchdowns.