Usually, it's not much of a concern on the far end. The question is here--whether to fly out of CHA or do a level-0 to BNA or ATL first. As far as I know, they will not put people on AirTran, but Southwest is considered OK. Being accountants by trade, our firm tends to be pretty sensible about balancing the pain of a two-hour drive (or in my case, a $55 shuttle ride) against the airfare differential.