previous articles about DFW base:
https://news.flyfrontier.com/frontie...ional-airport/
....To celebrate the occasion, America’s Greenest Airline is offering fares from DFW starting at $39*. Service to new destinations, which started this month, include Montego Bay, Jamaica (MBJ), San Juan, Puerto Rico (SJU), Cleveland (CLE), and New York LaGuardia (LGA). With the new service, Frontier will serve 21 destinations from DFW, making Frontier the airport’s third largest carrier based on destinations served.
again "20 destinations rule" in play. I might modify this to say "with new cities considered in the total, 20 destinations as a minimum"
which means CVG indeed is in play