Last minute flights = zero chance of upgrade
It really doesn't make any sense. Because of my job, I buy 99% of my tickets a day or two before departure. I am ALWAYS #1 on upgrade when I book 1 day before flight on United - however, I never get upgraded because of all the upgrades via the 72 hour upgrade block. By the time I book, first is already filled with lower tier/lower fare tickets.
So they charge me an UBER premium for flying last minute and I end up sitting in possibly the most expensive coach seat on the plane. Thanks for rewarding profitability United...
Awkward for United that when I do fly them, I remember why I stopped. You'd figure just once, that I'd be reminded why I used to fly United... but that hasn't happened in a while.