I work at GoJet and commute out of SAT. GoJet flies at least 1 and sometimes 2 flights a day from AUS/SAT - ORD/DEN. Honestly in the 5ish years of commuting to ORD, I might have been bumped one or two times and I’d say 90% of the time I have a seat in the back.
The only tough times commuting from SAT/AUS are around SXSW and Spring Break times. But overall it’s one of the easier commutes I’ve done.
Feel free to PM me if ya have any specific questions.