Celestial Sorcerer Wings( Player's Handbook II, p. 91)
You channel your inborn magical abilities to spawn a pair of spectral, magical wings that glow with majestic power.
Celestial Sorcerer Heritage (PH2) , sorcerer level 1st,
You can expend a spell slot as a standard action to gain the ability to fl y. You fly at a speed equal to twice your base land speed with good maneuverability. This benefit lasts for 1 round per level of the spell slot used to activate it. This is a supernatural ability.