Well yeah both SA and Austin have airports. Love Field is probably more "central" for some reason, back when I traveled to Abu Dhabi monthly I always found direct tickets to Dallas or Houston, and for cheaper but since I need to land in San Antonio I had to take transit flights, usually Atlanta cause I traveled Delta. (Delta sucks at customer service and care but I pick it cause Atlanta has the best airport out of all the other transit options that I tried out, including Detroit, Chicago and Washington D.C. They have nice big smoking rooms there that are well vented and also the Atlanta TSA are the nicest)
But then again isn't Houston just as major and central as Dallas? If there was a Houston show, would it be a better option for non-Texans?