Hi There,
Don't get me wrong, I am considering Jet Blue. It's all about price, but my wife is a little antsy about them. She also only reads the headlines or listens to TV news, which is not the best source of info. They did however, cancel flights a few weeks ago before any snow flew. It was so the planes would be in the right places after the snow.
And by the way, a snowstorm in early Dec in boston would not be a freak storm. Unusual maybe, but not freak. We flew home in early Nov a few years ago from San Diego and there were several inches on the ground here.