I tend to fly Southwest most of the time, but there was an instance where I needed to fly from Reno to Irvine California. Southwest was going to be about $100 and allegiant was only $33. Anyway, food for thought. There are other airlines out there That maybe don’t advertise that heavily but could be good values. Best way to know who flies there is to go to the McCarran/Reid airport website. All of the carriers will be listed there.