Originally Posted by jdrtravel

We can't be certain that the customers upgraded were not also F pax who also had IRROPS.




I believe that one purpose of the advanced upgrade program is so that DL can open up more coach inventory to sell, especially when Y tickets are the most expensive. I actually think that this is probably their #1 reason for offering advanced upgrades. I don't think they care where you sit as long as you buy a ticket.