Airvault is a commune in the Deux-Sèvres department in the Nouvelle-Aquitaine region in western France. It is located on the River Thouet. …Airvault is a commune in the Deux-Sèvres department in the Nouvelle-Aquitaine region in western France. It is located on the River Thouet. The inhabitants of Airvault are the Airvaudais and the Airvaudaises in French.