We aimed to assess if resting state functional connectivity (FC) changes were related to hypoperfusion in a group of Parkinson’s disease (PD) patients. Independent component analysis was performed to identify common spatial patterns of FC and of arterial spin labeling perfusion separately, in the whole group of PD and healthy controls. Concurrent FC and perfusion group differences were assessed. The observed FC alteration in the visual network may be influenced by the significantly reduced cerebral blood flow in the lateral occipital cortex, and vice-versa. The cross-talk between functional and perfusion findings should be considered when interpreting the results.