In 2006, after being the band's touring drummer for two years, Flynn officially replaced the original drummer of Maroon 5, Ryan Dusick, who left the group due to serious wrist and shoulder injuries sustained from constant touring after the release of their first album, Songs About Jane in 2002.

[citation needed] Prior to joining Maroon 5, Flynn has played drums for The B-52's, Gavin DeGraw and Gandhi.

Later that year he came third in his high school talent show, behind stand up comedian Daniel Tosh and a dance crew known as "Tropic Lightning".

Flynn graduated from Gunn High School and briefly attended San Diego State University.

[2] Over the years, Flynn has played Yamaha and Ludwig drums, as well as Sabian and Zildjian cymbals, among other brands.