Originally Posted by
SK AAR
This is spot on. As the OP is still confirmed in J/C class for PHL-EDI there is close to zero chance that a DTW agent will rebook the OP - let alone rebook to BA or issue a FIM to allow the OP to travel OAL. It is not going to happen. Period. No sane agent at DTW would do that as any unassigned seats is likely to resolved at the gate in PHL by e.g. no-show, misconnections, blocked seats becoming available etc. May I remind you that thousands of times each day pax receive a BP without seat assignment at check-in at the initial departure point, and pax will have to proceed to the gate of the onward flight to get a new BP with seat assignment. If agents were to rebook pax just because of no seat being assigned for the onward flight, it would turn into chaos.
I'm still very confident that the OP will be able to board the AA flight to EDI - and with seats in J/C class.
All of that may be the case for Y, but this is J. In the vast majority of all of those cases, the reason AA doesn't rebook for a lack of a seat assignment is because there are seats available to be assigned, just under airport control which needs to be done at the gate. There still is some question over those blocked seats here, but that doesn't appear to be the case. Also, in Y, it may just take 1%-2% of the people not to show up to open up 2 seats. For this to happen in J, it'll take 12%-14% not to show up, the equivalent of overbooking Y by around 20 seats in a 160Y cabin.