Originally Posted by
MLRoach
I asked once (and received) an upgrade on the flight when I noticed a free FC seat under UDU. I don't know if it's necessary to request it before they close the door, but it doesn't hurt to ask!
On a recent IAD-MCI CR7 flight, I noticed that 2A was still open, after we had loaded up. When I mentioned this to the FA and showed her my elite card, she said that I could move if nobody showed up... Of course, one minute before the door closed, the person in 2A showed up.