Originally Posted by
SQ421
I know the flight needs to be booked on the operating carrier's code if using the booking tool. I was assuming (hoping?) that AA would be able to ticket any flights on AA codeshare as long as AA had a code on that flight. Or is there some rule that requires the first flight in a *ONE* to be booked using the operating carrier's code?
There is no rule that requires the first flight be on the operating carrier's code (I have booked a LONE4 with the first flight being QF metal and AA flight number)
The problem for you is that you can take the AA-coded JNB-LHR flight only if you are connecting in LHR to an onward AA TATL flight. This is not a rule of the RTW ticket, but is a rule of the agreement by which AA codeshares on these BA flights (I don't know if it is say a UK Govt requirement, or just the contractual agreement between the two airlines that requires this)