In the title compound, C(22)H(18)FNO(3)S(2), the five-membered thia-zolidine ring is planar (r.m.s. deviation = 0.003 Å) and forms dihedral angles of 70.2 (3), 73.16 (17) and 10.32 (14)° with the cyclo-propane, fluoro-benzene and methyl-thio-benzene rings, respectively. The sum of the bond angles around the thia-zolidine ring N atom (359.6°) indicates sp(2) hybridization. The mol-ecular structure features intra-molecular C-H⋯S, C-H⋯F and C-H⋯O inter-actions. In the crystal, no significant inter-molecular contacts were apparent.