Originally Posted by
ryanbriar
I am convinced that it has to do with how the instant upgrade gets re-ticketed versus how a Y-J SWU on the AA segment gets re-ticketed. I feel like I am pretty good at navigating AA nuances, but this is one that has me stumped.
I would say that this is definitely the case. If you did an instant upgrade on AA, I would doubt very much that anything was applied towards carrier surcharge conponent paid and so when rebooking on the BA flight, the difference between YQ paid and YQ for journey undertaken would be applied
Given that this is just an intra Europe flight, there is little difference between economy and business - you already have lounge access and may well be more comfortable in an exit row seat in economy than a regular seat in business