Originally Posted by
flyingmike
The only caveat, and this is an experience on UA, I am not sure if DL numbers it’s flights like this, is some flights even with a plane change are a single flight number and count as one segment.
in other words XXX-YYY-ZZZ is a single flight number and therefore is a single segment.
UA and I think US both did this. I’m new to DL so not certain it numbers flights like that.
mike
UA also used to give an additional 0.5 segments for premium cabin purchases,though I'm not 100% sure on how UA's new system works.