Originally Posted by
SoCal
There may in fact have ended up being no problem at all, but if the onboard computers detect a problem, they may have diverted to the nearest airport not only where they have facilities but also where they could quickly get clearance to easily land (L.A. area being much busier).
Huh? If there's an urgent situation, they will get priority landing no matter what airport. Clearly, it was not a terribly urgent situation -- so they decided to go to LAS, where Allegiant has more maintenance or possibly a spare aircraft available.