Brussels, 19/12/2003 (Agence Europe) - The European Commission has called on 18 airline companies to explain why their ticket prices differ in the various member States, differences that can sometimes reach up to 300% for one and the same flight. "The Commission receives a growing number of complaints from citizens who consider they are the victims of discrimination when purchasing air tickets, mainly via the internet", the Commission notes in a press release. Companies reportedly apply...