Philadelphia to Memphis $47 OW or $88 RT Nonstop on American Airlines BE (Limited Dates Aug-Oct)

American Airlines have low one-way airfares travelling from Philadelphia (PHL) to Memphis (MEM) for $47, nonstop. If you could build a round-trip airfare with the dates below, it’d be $88, nonstop. See my screenshot for a RT airfare. This is a basic economy fare. After Sept 5th, American will allow one carry-on, in addition to the small personal item, on board for free.
Frontier Airlines have this airfare at $70 but Frontier will only allow 1 small personal item and that’s it.
Travel Availabiility:
Departs: PHL: Aug 22, 25, 29; Sept 1, 5, 8, 12, 15, 19, 22, 26; Oct 3
Departs MEM: Sept 8, 19, 22, 29
Enter travel information on and choose American Airlines, the select your favorite OTA to book.
http://www.aa.com