American Airlines, Southwest, and Delta have posted competing round-trip flights from Dallas (DFW) to Knoxville, Chicago, Salt Lake City, Los Angeles, Sacramento, or Philadelphia (TYS, ORD/MDW, SLC, LAX, SMF, PHL) for $183-$190, NONSTOP. Flights September to February. No Sunday departures.
List Ordered by cheapest price: Knoxville $183 -> Philadelphia $250