Probably not. Airlines have other costs apart from fuel which probably have not dropped. Staff and Aeroplanes for starters!
You're right, those poor little airline companies only making £1.4 Billion pre tax profit in a year. In all seriousness, I don't think that staff and airplane costs will have risen that much in two years over and above what they would have cost a couple of years ago. There have been no major changes, in fact, BA have been cutting staff in recent years and arsing about with their staff terms and conditions.