An airbag housing for a vehicle and a manufacturing method thereof may include a main body receiving an airbag configured to expand upon collision of the vehicle and an inflator expanding the airbag, and including an end being open such that expansion of the airbag spreads in one direction, and a door portion coupled with the main body at the end of the main body to form a closed space therebetween in which the airbag and the inflator may be disposed, wherein the door portion may be open by the expansion of the airbag, wherein the door portion may be formed by combining a stiffness portion with a ductile portion, a ductility of which may be higher than a ductility of the stiffness portion.