No idea. When I'm running the rates for june - oct, I'm getting about the same deal. $59 each leg on SW, but I think you can get AA for $44 if they haven't went up.
OMG - you're not going to believe this! I'm sitting here and I notice I have a "ding" from Southwest. I click on it and it's a notice of a 15% sale for travel starting 8/23 through 10/31! I just put in the dates of Sat., Aug.23 - 25(girls are with dad anyway) - $93 each way to Chicago!!!!!!!! Ok, we NEED to do something!