Originally Posted by
smellyplane
what's the usual compensation if a C passenger is involuntarily bumped or downgraded to Y? (assuming all F passengers check in for the flight)
It's much more likely that C is overbooked based on unsold capacity in F, and the passenger will be involuntarily
upgraded to F. When C is sold over capacity, the F seats are usually taken out of inventory. I think it's pretty rare that the combined F/C cabins will be overbooked except on flights where they have a pretty good idea of how many no-shows there will be.
Now, my understanding is that SQ is loathe do to even operational upgrades, so seems that they either (1) don't overbook C or (2) do overbook and sometimes have to downgrade, pay compensation and probably lose a customer for good. Neither seems like a financially optimal way to run an airline.