After a season in the UPSL with Sporting Arizona in 2018, Flood traveled to Brazil and Japan in pursuit of a professional soccer career.[1] He returned in 2019 to play in the NPSL with FC Arizona.[2][3][4]
On March 31, 2021, Flood signed his first fully professional contract with USL Championship side Phoenix Rising.[5] He made his professional debut on April 30, 2021, starting in a 4–1 win over San Diego Loyal.[6]
In January 2022, Flood was re-signed by the club for another season, as his option was activated.[7]
On January 12, 2023, Flood joined Irish club Finn Harps on a permanent deal, signing a two-year contract in the process.[8] On 15 February 2024, it was announced by Finn Harps that Flood had returned to America on compassionate leave for an undetermined amount of time.[9]
On 14 March 2024, it was announced that Flood had signed for his former club Phoenix Rising.[10][11]