This communication investigates the effect of radiating heat transfer on unsteady free convection flow past a vertical surface in a rotating porous medium. It is assumed that surface is rotating with angular velocity Ω. The variable heat flux is assumed on the vertical surface varies with time; the governing equations are solved by adopting complex variable notations. The analyticalexpressions for velocity and temperature fields are obtained. The effects of various parameters on mean velocity, mean temperature, transient velocity and transient temperature have been discussed and shown graphically.