We are looking to travel from London to Hong Kong on a non-stop flight on Saturday 31st May 2014. The costs vary considerably. Cathay Pacific GBP 634.35, Virgin Atlantac GBP 1,049.25 and British Airways GBP 1,370.25. Should I hold off a while and see if any specials come up or book the Cathay Pacific flight now. All opinions greatly appreciated.