To investigate the interactions present in aqueous {d-fructose + ionic liquids 1-butyl-3-methylimidazolium bromide or 1-octyl-3-methylimidazolium bromide or 1-octyl-3-methylimidazolium chloride} solutions, volumetric compressibility and viscometric properties of these systems have been studied at temperatures T = 288.15–318.15 K and atmospheric pressure. The positive and increasing values of transfer volume and transfer partial molar isentropic compression with increasing ionic liquid concentration indicated predominance of ionic–hydrophilic interactions in these systems. The calculated hydration number showed dehydration of fructose in the presence of studied ionic liquids. Further, the interaction and cavity volumes were computed using the scaled particle theory.