Originally Posted by kurz
KL has for Economy the following booking classes: S (full fare intercontinental economy and a crazy expensive amount for a seat in coach. It can be combined with segments in C and goes first in operational upgrades. I presume by KL it is often treated as C)
kurz,
I have travelled on S class tickets many times (what do you do when nothing else is available?) and KL definately doesn't treat it as C. I think it doesn't even make a difference with let's say L or Q for op-ups, at least that's my experience.