For those of you that must get back to JFK, you might want to think about taking the Eurostar to Brussels (2 hr train ride under the channel) then rebook on BRU - JFK. I just flew in from JFK on DL140 on Sunday and this flight usually has room on it.

I know taking the train to another city isn't the easiest but if you must get to JFK, it might be a good solution. My flight from JFK was full of people that had canceled flights that were trying to get to London/Paris doing the same thing but in reverse.

Good luck to those traveling today.