Another point is that flying to Halifax from BHD would be prohibitively expensive seeing as the UK air passenger duty just rapes the holidaymaker of their hard earned cash, such to the extent that on taxation alone, you'll still be financially better off driving the 100 or so miles from Belfast to Dublin, many people do this already. If say you're travelling as a family of four, (£69x4 = insanity (£276)).
Does Halifax not qualify for the reduction? Its only (I think) £12 per person on the Newark flight from BFS. I think these things are measured from london so maybe that would help Halifax?