United Airlines flies CMH → CLT — 2 flight numbers on record (UA3302, UA3305). No departures are in the next-48h assignment window yet; aircraft assignments publish about two days out.
Counted from live tail assignments over the next 48 hours. A route with no equipped departures today can still get one — assignments publish about two days before departure.
Want the reverse leg? CLT to CMH, or compare a full itinerary.