In the last few months, nothing before 24 hours and more frequently around 4 hours right before the upgrade list appears at the airport.

I have 15 stickers to use and no luck lately in them clearing. So they just keep accumulating. Going into this year, I plan on just booking F fares at the most competitive price rather than playing the upgrade game. Just flew OGG-LAX and there were 16 passengers on the upgrade list. I pretty much expected it wouldn't clear knowing the limited F space on the 32B but still surprising to see the list so long on that route.

I did not mean that last statement seriously. I should have attached a smiley.

I understand that. I was pointing out that they have plenty of confirmable upgrades (C) but have not cleared my comp upgrade.

Hah, should have recognized it, but on this forum you can never tell.

The "confirmable upgrade being available, but no complimentary upgrade yet" phenomenon is also not new. LAA did it all the time (there's a whole thread about the lack of such space with the new F->J schema) and while I only took advantage of it a few times, I love that I have the option to spend a few miles and $ to confirm an upgrade if I so desired.

Either way, with inventory like that, it's likely you'll clear as it is.

T-Minus 1 Hour- I'm ExPlat- 17 available in Business, 1st on "list" but still haven't cleared. I think It's safe to say that AA has eliminated 100 Window haha

Msy-D.C.'a did not clear until t-8 hours and there are currently 5 empty seats on the plane

Already proven false in this very thread....

So I ended up with an upgrade by the gate agent, but stuck in a window. There were 3 seats available: 2A (single seat and best FC E175 seat IMHO), 3A, and 3F. I got 3F dispite being #1 on the upgrade list #firstworldproblems. I suppose if I had gone to the gate agent and requested 2A instead of sitting in the club, I could have gotten it. But if they had cleared the upgrade earlier, it would not have been an issue.

Haven't seen anything further out than T-24 (to 30) in all of 2016
 

Monday I am on a 767 with not a single seat occupied in Business and maybe half full in the back with very few Elite or E+ seats occupied... (it's MIA-MCO - so the odds of tons of business people suddenly booking it should be fairly low). I figured if there is one flight I'd see a t-100, it would have been this one.

Window still exists: I cleared T-100 this week for a Saturday flight CRP-DFW on a mainline MD-80 ~350 mile flight).

Weird, in my experience at the gate they fill seats front to back too.

Someone else may have asked the gate agent for it

Yea or the GA cleared them all at once and it did it by alphabetical order or something.

I flew that roundtrip this week. On both flights, the F cabin was completely empty at T-48, and then I cleared on both around T-27. Neither one had anyone still left on the upgrade list at T-4.

Of course, these rare >24 hour upgrades were on RJ flights with no advance meal selection available...

Plat; made the request upon the 2016-10-12 booking of a 2017-01-10 EZE-MIA flight. I arrived at the gate maybe 5 min before scheduled boarding time. I asked the GA if there was any chance I'd get the upgrade (no list was showing on the monitor). She checked and said "no", then "wait a couple minutes; one person hasn't checked in yet". A few minutes later, she'd handled the few people in her line; checked again, smiled, and issued me the new BP just as priority boarding started.

And then she had to come on board to take my card back to the desk for the co-pay.

This was a 16J 737 777-300ER aka 77W; I got seat 4J (no surprise).

AA Flight 1787 1-13-17.
At T-2.5 hours, and 8 seats free in F. 33 in the upgrade list, including at least 1 EXP (me) and someone that is EXP or higher.