Alaska has opened up a lot of new routes out of Austin, but they're consistently booked enough such that all the "sale" emails I get never have any Austin routes included. Very different from this time last year, with AUS-LAX fares at $79 o/w.
I've got a few Delta flights now, but mainly because of lower price combined with their "free Diamond status through August" promotion via Amex. When looking at "real" fares, I often have to consider the buy-up to C+ on Delta vs. the included PC I get today on AS.