After seeing the finale and seeing Ozai fly around like a fiery bird I asked myself could he always fly or was it only during the comet that he had that kind of power? Now some might say that it is only during a comet that a firebender has the power to do that but then I think of how skilled he was at flying around like that. He matched Aang move for move in the air and he's an airbender flying is his life. Which makes me think that he had practice before that day... power can't make up for experience and Ozai seemed to have alot.
I personally think that a skilled bender has the ability to fly but like lightning it is something that is hard for them to accomplish.
What do you think?