We used Delta each year we've gone to WDW and I'm seriously thinking about going with Southwest next time. Delta changed our flights 11 times last year! We started out with a non stop 6am Louisville, KY to Orlando and a return for Orlando to Louisville, KY but after they had changed it 11 times we ended up with a 7am Louisville to Atlanta (56 minute layover) to Orlando. And a 8am Orlando to Atlanta (1 and a half hour layover) to Louisville. I'm really sick of Delta!