I can only speak for DL
on the ATL
route, but as would be expected O&D is nearly non-existent due to the close proximity of the two cities, which can be reached in approximately two hours by auto. And with advance purchase fares approaching $200.00 r/t, fighting the airport hassle is just not really an option.
Delta's market share in BHM
has steadily declined over the past several years, with WN
#1 in passenger boardings, AFAIK. BHM
used to see a steady diet of 757's from ATL
every day, but now these are down to a mix of MD
-88's and 737-200's. Quite a reduction in available seats...