Lance :
Delta recently changed it up but it was T for business (LGA, DCA, etc), A for America (DFW, TPA, all the major cities), B for boring (GRR, BDL, all the generic US cities), C for the 717s and CRJs (regional flying), D for the rest of the CRJs and 717s (regional flying plus Canada), then E and F for international. However, now that the refurbished D concourse is open, they’re operating more domestic flights out of there (basically taking the place of B and moving all the CRJs and low cost carriers to C). Southwest also cut capacity at ATL so instead of occupying the entire southern half of C, they share it with frontier
2026-07-29 00:20:07