Flint joined Portsmouth aged 8 after playing for local side Widbrook United.[3] Flint broke his arm in January 2019 and despite initially being told he would be released at the end of his scholarship in summer 2019, his scholarship was extended by a further year.[4] He made his Portsmouth debut on 14 September 2019, starting and scoring in a 3–1 EFL Trophy win over Norwich City U21s.[5] In October 2019, Flint joined Isthmian League side Bognor Regis Town before joining the side on a permanent deal in January 2020 following release by Portsmouth.[6]
Volendam
On 13 September 2020, Flint joined Dutch side FC Volendam following a trial at the club, initially joining up with their reserve side in the Tweede Divisie on an amateur basis.[3][7] On 23 November 2020, Flint made his first team debut for Volendam in the Eerste Divisie, coming on as a substitute in a 0–0 draw with Jong Ajax.[8] On 3 October, he scored his first senior goal in a match for the reserve side Jong Volendam in a 3–1 away win over Excelsior Maassluis.[9] On 16 December 2020, Flint signed a new contract with Volendam, keeping him at the club until 2023.[10]
In March 2023, Volendam triggered a clause in Flint's contract that kept him at the club until summer 2024.[11]
In March 2024, it was announced that Flint would be released by Volendam at the end of the season upon the expiry of his contract.[12]
Crawley Town
On 27 June 2024, Crawley Town announced the signing of Flint on a two-year deal.[13] Flint started Crawley's opening match of the 2024–25 season and was awarded the man of the match award as Crawley beat Blackpool 2–1.[14]
Style of play
Flint is 6 ft 2in tall and left-footed.[3][4] He started his career as an attacking midfielder at Portsmouth, but was retrained as a centre back at Volendam.[3][15] Flint has been noted for his technical ability, with former Portsmouth manager Kenny Jackett stating that Flint was "probably technically the Academy's best player",[4] whilst Crawley manager Scott Lindsey claimed that he signed Flint for "his ability to step in and play".[14]