In the title compound, C18H17BrO2S, the dihedral angle between the mean plane of the benzo-furan ring system and the benzene ring is 68.58 (4)°. In the crystal, mol-ecules are linked via pairs of C-H⋯O hydrogen bonds into inversion dimers. These dimers are linked by C-H⋯O hydrogen bonds and π-π inter-actions between the benzene rings of neighbouring mol-ecules [centroid-centroid distance = 3.783 (1) Å], forming a three-dimensional network. In addition, the stacked mol-ecules exhibit inversion-related S⋯O contacts [3.153 (1) Å] involving the sulfinyl groups.