My experience is similiar to AGentlRose. Flying with Delta was fine. The fact that the changed my flight times over and over again is what bugged me. Sometimes they tinker with it by minutes, but one flight began as having me leave my home airport at 7pm and arrive at
WDW at 10pm. They changed the times 20 mins to half an hour at a time until I ended up leaving at 9pm and arriving around midnight.