Currently all of the flight magic can only be used on ones self. I suggest that from B tier and up you can start using it on yourself an others as well. The other player obviously can't go flying off on their own and would basically be in "orbit" around the casters gravity(if that makes sense. If not, please let me know so I can explain better).
One downside of flying with others could be reduced total speed.
One downside of flying with others could be reduced total speed.