Need Help Building Flier team

I tend to run player phase teams or mixed phase.

Player Phase team: I'd say Summer Corrin, Cherche, Elincia and Cordelia. Blades and braves overwhelm on player phase with Hit and Run and reposition letting them retreat to avoid retaliation. All would ideally like to receive a Hone Flier buff but Corrin is the one that needs it as well as Fortify. Cherche can make use of Fortify as she can run Heavy Blade and Ingis which will charge after her first two hits ready for the next player phase so she can use the +6 Def. Just an idea.

If you ever get flying dancer they can be good support here, they'd run Hone Fliers as they have little need of it themselves.

Mixed Phase team: Summer Corrin for blade offense, Camilla can pull good mixed phase and buffing roles while Minerva runs a very good enemy phase with her special refine and 1 charge Moonbows. Robin is basically magic Minerva who can bait archers. The red could go to player phase Elincia or Caeda who can deal with armors.

Mix and match the units and see what works for you. I find what works also varies depending on what you're up against in PvE.