I'll try and get the tail number when/if it takes off at 1:40 p.m. CT.
Here's another private going from AUS --> OMA this afternoon. However, noting it to cross it off the list of possibilities - it's owned by John Kiella, CEO of Kiella Real Estate Group in Temple, who has three aggy children.
Though this Learjet 45 caught my eye:
It started making back-and-forth trips between Austin Executive and Omaha starting the second day of the CWS - June 15 (i.e., the day of aggy's first CWS game).
It last left OMA late Saturday night and landed back in Austin around 12:15 a.m. yesterday. No flights back (or scheduled) since.
The plane is owned by TVPX in name, but TVPX is a company that provides trust services for the real owners for confidentiality and other reasons. So, very well could be a UT-affiliated owner.
It flew to Houston early morning the day of the first UT-ULLA game in the College Station regionals. Returned to Austin a couple days after our final game.
Numerous frequent/recent trips to Addison, TX (visits to B12 headquarters?).
Edit: The flight that @Mo Horn linked just took off. Tail number is N535V. Similar to the one noted above, this plane is also owned by a trust company (Delaware Aircraft Trust).