First, I would strongly advise you to delete your father's SSAN from your post.
There are some other folks who can give you advice on dealing with the Records Center at St Louis and who are familiar with geneology sites that could get a bit more information.
As for Love Field, you are correct in believing it was primarily a station of the Air Corps Ferrying Command (later Air Transport Command) in 1942-1943.
Units at Love included the 5th Ferrying Group, the 2d, 11th, 12th, 14th, 16th, 62d, and 91st Ferrying Squadrons, the 14th Transport Transition Training Detachment, the 347th Base Headquarters & Air Base Squadron, the 1042d Guard Squadron, the 24th Sub Depot, the 391st (later 691st) AAF Band and several Air Depot Detachments. http://www.airforcehistoryindex.org/
contains a searchable list of abstracts of AF unit histories and other documents that are available at the Air Force Historical Research Agency that may help determine what unit he was in.
If you have information on his AF serial number (or a later Army one), it would be helpful. If he had an Air Force Serial Number identical to his Army serial number with an AF prefix, it would indicate he was still enlisted in September 1947, when the AAF was replaced by the USAF.
If he had another Army Serial Number with an O prefix, that would indicate he was an officer before transferring to the USAF.
His officer serial number in the USAF would likely be prefixed by AO (reserve - same as his O serial number in the Army if he had one). or suffixed by A (regular AF). About 1964, the AO was replaced briefly by FV and the A was replaced by FR. A couple of years later, the USAF dropped serial numbers and replaced them with the Social Security Number with an FV or FR at the end.