I have a deviated septum and underbite :(

Do the underbite first, and the deviated septum second. I have had sinus surgery twice, and both times they fixed my deviated septum. Contrary to what ArtistBboy said, this procedure does not alter your appearance in any way, as they are simply realigning your cartilage, not breaking your nose. Also, the surgery for the underbite involves breaking your jaw, which would likely undo a lot of the work that your doctor did in your nose.

I don't know the cost but I had an underbite as well what they did for me was put a couple caps on top of my teeth to readjust my top jaw my underbite was minor but could've gotten worse had the dentist not done anything. I agree with everyone and say that the nose first is the best because you don't want you teeth to be "straight" with the wrong angle of your nose lol

I had both of those and had surgery on my mouth about 5 years ago I think I was a somemore in high school but yes it was very expensive and we had dental insurance and I also had braces all and all without insurance it was about 15,000 dollars but I paid about 5,000 because of my parents dental insurance.