I have gotten a handful of op ups over the years on CO TATL and TPAC itineraries. If I had to guess I would say it was about 15% of the time. One I do remember off hand was AMS-EWR when I was silver elite. I don’t know if Y was sold out because; hey, I was up in front…
I have found that the best way to guarantee
not receiving an upgrade on international flights is to directly
ask for one. Your have a better chance if you check in at the airport early, dress presentably, and chat it up with the airline personnel. Developing a traveling rap with some good humor helps... ^
Many here will say that is a good thing that Continental is protecting the integrity of is Business Class product, and I would agree with that statement.
SunLover