American Airlines and Southwest have round-trip flights from Dallas (DFW/DAL) to Milwaukee, Raleigh, Fort Myers, Philadelphia, Jacksonville, Florida, Pittsburgh, or Charlotte, North Carolina (MKE, RDU, RSW, PHL, JAX, PIT, CLT) for $123, NONSTOP. Flights September to June. Cheapest departures on Tuesday, Wednesday, and Saturday. Extended weekends available. Origin/Destination reversible.
There are two pairs of links for this deal. One that directs to Southwest and the other to Expedia. Check both websites before finalizing your purchase.
A Carry-on bag and also a personal item is allowed for free. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.