It seems like that loose routing rules may be over. I’ve held a SFO-LAX for the last few days that I’ve kept pushing out, and I’ve only been offered LAS/SBP/SBA/SAN/MFR/PHX/SMF consistently as alternates even though many other flights had fare class availability.

Contrast this to a week ago when I was offered SFO-HNL-SFO-LAX