A packaging container for pourable food product comprises a first side having a material laminate structure, a first and second transversal seal and a longitudinal seal extending from the first transversal seal to the second transversal seal. An opening device on the first side of the package comprises a tab portion on an outer surface coupled to an opening strip portion via a bridge penetrating through the material laminate structure to rupture the material of the packaging container to create an opening. The opening strip portion is attached on the inner surface and extends along a substantial portion of the transversal dimension of the first side.