I would say that generally, in real world a maths, engineering or science based degree (particuarly fiziks) are looked upon favourably in any profession. I imagine, that such a degree would accentuate your accademic accumen more than an aviation management related degree. I would guess that even an airline would take this view. If you are thinking of a management degree, consider carefully. The only management degree that carries an real oomph! is the MBA (Master Business Administration) and that is a post-grad qualfication. This qualification is very highly regarded by any organisation, as they know that you know how to help make them more money.