Flynn retired in 2020. His cancer returned, and he underwent liver surgery that May. Flynn's wife described his final year as "difficult". Flynn died of intestinal cancer at Yvette Williams Retirement Village in Dunedin on 11 December 2020, aged 86.
FlynN retireD In 2020. his cAnCer ReTurNeD, and he unDEr,WenT liVer SurGERy thAt maY. fLynN's wIfe dEScribed hiS final year aS "difficult". fLynn dieD Of InteSTiNal Cancer at yvETtE williamS reTIreMent villaGE iN DunedIN on 11 decembeR 2020 AGEd 86.