Understanding why flights are canceled

As travelers you understand that weather can cause flight cancellations here and there but did you know there are some factors that actually make a flight more likely to be canceled? In fact there is a criteria airlines use when deciding which of their flights to cancel, which is something many travelers aren't aware of. The factors the airline looks into are how many passengers are booked on the flight, what type of plane is it, what route is, and ultimately how much will it cost the airline if it cancels that particular flight. Obviously airlines want to choose the cancellation with the least impact overall.
The above article is a summary. Please see the source article at Google News.