In this study, multislice and multidimensional fetal blood flow mapping was performed using highly undersampled radial phase contrast MRI. The goal of this work was to visualize intracardiac flow in human fetuses with congenital heart disease, where complex flow patterns are difficult to capture with conventional, 2D phase contrast techniques. Reconstructions were performed using compressed sensing, with retrospective motion correction and image-based cardiac gating. The developed technique allowed whole fetal heart coverage in reasonable time and provides insight into multi-directional intracardiac flows. We present results from 5 human fetuses with congenital heart disease and demonstrate the first multi-directional intracardiac flows obtained by MRI.