New to the AT, so I'm looking for some advice on shuttling to and from Atlanta and possibly Knoxville.

Looking to section hike from Springer to Fontana Dam later this summer (July/August). I know there are a lot of resources out there, but if anyone has any info or other tips based on experience, I'd greatly appreciate it!

I'd be flying into the ATL airport and would need a shuttle from there to Springer. Upon completion at Fontana I'd either do a shuttle back to Atlanta or I'm thinking Knoxville airport since its closer... anyone have any referrals/tips? I guess the real issue is the transit at the end from Fontana to either Atlanta or Knoxville.