The ovenight snowstorm may have something to do with the cancellation. The only times we have experienced cancelled flights into or out of Boston were with American. If the weather's bad, you can't blame the airline.
They cancelled a return flight to Newark from St. martin in July on us. No reason was ever given. No weather related issues. As a result we missed our flight from SanJuan into Newark. They told us we could stay in sj overnight and try for the next day or take there later flight into JFK. Our car was in Newark. We opted to do that, and had to take a bus to Newark airport from JFK. I would never trust them. They gave us each a $100 off our next flight we have not used it. The have a horrible record.