The club was founded in 1981 with the purpose of having an elite team in the city of
Zaragoza with sufficient resources to play in the 1ª División. In 1984, CAI Zaragoza achieved its first title: the
Copa del Rey, after beating
FC Barcelona 81–78 in
Zaragoza. The second Copa del Rey arrived in
1990, when CAI Zaragoza beat
Ram Joventut 76–69 in the
Centro Insular de Deportes at
Las Palmas. In 1990–91 season, the club participated in the
FIBA European Cup Winners' Cup and managed to reach the final in
Geneva where CAI lost to
PAOK by 76–72. From 1992 to 1994, the club was sponsored by
Banco NatWest España. Later, in 1996, due to financial problems, CB Zaragoza sold their
Liga ACB berth and the
FIBA Korać Cup spot to
CB Granada and the senior team was folded. In 2001 the senior team returned to
Liga EBA but only played two years. Since 2004, CB Zaragoza started to play regional competitions. It was promoted several times to Liga EBA, but always remained in the
Primera División. == Sponsorship naming ==