Quantum Air (formerly known as Aerolíneas de Baleares, operated as AeBal) was an airline based in Madrid, Spain. It operated domestic scheduled services within Spain, as well as charter and ACMI operations all over Europe. Its fleet was originally wet-leased to Spanair for use on domestic and international routes, but since 2009, they operated on their own. Its main base was moved from Son Sant Joan Airport, Palma de Mallorca to Madrid Barajas Airport.
The airline was established in 1999 and started operations on 5 July 2000 from Madrid with domestic services and an initial fleet of three Boeing 717 aircraft. It was originally named Aerolíneas Baleares Blue Star, but has operated under the AeBal-Spanair Link name, whilst retaining much of its Spanair pedigree in the livery. It was owned by Spanair (51%) and SAS Group (49%) and had 155 employees (at March 2007).
AeBal ceased operations on 16 September 2008, as part of the Spanair economic restructuring plan, canceling their wet-lease agreement. Finally, the airline was sold by SAS in January 2009 to Proturin, a Spanish investment company controlled by former Aerolíneas Argentinas CEO, Antonio Mata. In March 2009, AeBal ceased to exist and has been replaced by Quantum Air. As of 26 January 2010, Quantum Air has ceased all operations and ticketing.