I am flying out on Saturday. I hope! I guess it all depends on the weather. They are saying there is more snow to come...could be in the next day or so, or not until Friday. The weatherman was really hedging his bets with his forecast.
As to what type of flight gets priority, I can't say with absolute authority. But, my mother was caught up in a bomb scare at LHR a couple of years ago. All the flight were delayed for several hours. Once the terminal was cleared, the short haul flights got cancelled and the long haul flights went out.
