Originally Posted by
Mountain Trader
Back when Stapleton was open, I was flying often to Seattle, which UA listed as 1,007 miles. This meant I needed 3 of the old upgrade certs to get in first...
That's UA for you. AA has a 50-mile leeway on these.
There will always be a trip just over any cutoff, of course. Unofficially, when they were paper, they'd usually take three AA stickers for the 1,562-mile BOS-DFW trip. In the electronic system, it's always four.