We are taking JetBlue down to MCO from NY this coming week. We are going down Tuesday and there is still many empty seats on our plane. The total of empty seats for the day is 215 for all the flights going down that day. I know some people can still buy seats but I am wondering if there is more of a chance that JetBlue will cancel one of the flights to put those people on the other planes for that day? I am sure airlines don't like to fly planes with 30 or more empty seats. It does seem that JetBlue does cancel flights a few times a week. Are they allowed to cancel a flight for any reason?