Manchester City In March 2014, at age 17, Flint signed her first senior contract with Manchester City ahead of the
club's first campaign in the
Women's Super League. and in October, she was in the starting lineup when City won the 2014 Continental Cup (WSL Cup). In January 2017, she signed with
Sheffield F.C. in WSL 2 (now
FA Women's Championship) before rejoining Fylde in July the same year.
Blackburn Rovers In December 2017, Flint signed with
Blackburn Rovers in the FA Women's National League, the third tier of women's football in England. She won the Women's Championship Player of the Month honours for December 2020 with four league goals during the month. On 4 April 2021, Flint scored the second Leicester goal in a 2–0 win over
London City Lionesses, securing the 2020–21 season title and a promotion to the
FA Women's Super League. Flint had previously worked part-time as a lab technician, but after losing the job to a
COVID-19 pandemic-forced furlough, she moved to training full-time, a change that she has credited for her scoring form with Leicester. She ended the 2020–21 Championship season as the club's top scorer with 17 goals in the competition. On 16 May 2021, Flint scored the winning goal in a 2–3 upset of
Manchester United in the fifth round of the
2020–21 Women's FA Cup.
Celtic Midway through the
2022–23, Flint joined
Celtic on loan for the remainder of the season. She saw a successful loan spell scoring eight goals which helped Celtic capture the
Scottish Cup and secure a place in the
2023–24 UEFA Women's Champions League.
Liverpool In July 2023, Flint signed for
Liverpool. After struggling to get regular games for Liverpool, she rejoined Celtic on loan for the rest of the 2023–24 season in January 2024.
Tampa Bay Sun In June 2024, Flint joined
Tampa Bay Sun ahead of the inaugural
USL Super League season. She scored her first two goals for the Sun in November and was named to the league's
team of the month. In the playoff semifinals, she equalized through a penalty in a 2–1 win over the
Dallas Trinity. Tampa Bay won 1–0 in
the final against cross-state rivals
Fort Lauderdale United to become the inaugural league champions. Flint was named to the
USL Super League All-League First Team.
Denver Summit in 2026 In January 2026, Flint joined
National Women's Soccer League (NWSL)
expansion club Denver Summit FC on loan through March with the option to buy, reuniting with former Manchester City head coach
Nick Cushing, as the Summit loaned
Faith Webber to the Sun. She made her NWSL debut on March 14 in the Summit's inaugural game, a 2–1 defeat away to
Bay FC. Later that month, she scored her first NWSL goal in a 2–0 win over defending champions
Gotham FC, the Summit's first-ever victory. On April 17, the club announced the permanent signing of Flint on a two-year contract. ==International career==