It's not easy shooting into the sun from an airplane window. There's a lot of reflection on the glass to deal with, smudgy prints on the window and vibrations too.
Personally I'd prefer a more level horizon for a sunrise shot, though I don't normally attempt into the sun shots myself. I'd rather shoot on the other side when the sun gets a little higher and illuminates the other wing and engine pod. You can tell I like taking pics from airplanes. Good effort.