What markets depends upon where exactly you are going to be. In the Pigeon Forge Tn. area the biggest weekend market is The Great Smokies Flea Market in Kodak. Exit 407 off I-40 . Here in western NC, the biggest is Smiley's , exit 44 off I-26. In the Cherokee-Franklin-Dillsboro area you could try Uncle Bills, good tourist market in the summer. Weekdays are smaller local markets
You can find them on the web by checking on
Flea Market Guide for Flea Markets, Fairs and Special Events . Or just search for NC Flea Markets.