We(2 adults, 1 child) will be flying IAH-TYS(Knoxville) in early August. Currently fares on CO are $420. Looking at the seat maps show mostly empty flights. IIRC TYS is also a maintenance center for the RJ's so the planes will be going there regardless. Should I expect fares to drop? I've bid for the flight on Priceline and have been offered $275.

Thanks,
Keith