Stylish Wings
One of the design decisions I made for Into the Omega was to never grant creative flight (at least - not for starter content, perhaps in a future expansion). Rather than allowing the player to fly endlessly, or with some time limit, I opted to hook into the double-jump mechanic used by several ITO artifacts.
Dragon Wings
These wings are available as a rare drop from defeating the Dragon, but they will only spawn after the second kill.
Phoenix Starfall Wings
These wings are also available as a rare drop from the Phoenix boss, but the location & thematic name of this boss is subject to change. Right now the set is called Starfall, but I'm considering moving that to a different content patch.