@kazzie
Your comments make no sense whatsoever. LHR practically shutdown. Have a look at the amount of cancellations. An airport is not deemed "open" if flights such as the huge number of long and short haul that had to be cancelled. Would you go into to your local and ask for a pint only to receive a half and accept it along with paying for a full one? A small drop of snow and its chaos is a zero excuse.