Originally Posted by
gooselee
This is possible in the app, at least in whatever version I'm using on Android. I click the "Upgrade/Standby List" button, then toggle over to the "Standby" tab and there it is. Been that way for quite a while AFAIK.
I'm only occasionally on standby, but I look at the SB list somewhat often if I'm just bored and/or want to see approx how full the flight is and how much of a chance there is that the empty middle next to me stays that way.

Gooselee, unless I am missing something, you can do this for a flight your are already on. However, you cannot check standby for a flight that you are not yet confirmed. If you can actually check standby for a flight you are not on, that is definitely news to me and would love to know how to do it.