La0.9Ba0.1GaO3-delta has been synthesized through solid-state reaction method. X-ray diffraction, AC conductivity, and scanning electron microscopy are used to investigate the structural properties and morphology of the system. X-ray refinement indicates that LaGaO3 is the major phase having an orthorhombic structure with the space group Ibmm. The study revealed that the Ba-dopant in the LaGaO3 creates oxygen vacancies, which are responsible to increase the ionic conductivity through hopping mechanism. The activation energy of the system is nearly similar to 0.65eV. It indicates that the major contribution to overall conductivity is ionic in the present system. The impedance behavior of the sample with frequency and temperature has been investigated using the Bode's plots. The loss tangent variation with temperature has been plotted to verify the relaxation behavior of the present system.