Originally Posted by
JClasstraveller
If they upgauged from 789 then that tells you something doesn’t it?
Not everyone wants to fly to JNB via SIN or DXB.
That is a good reason, as that is a considerable detour. When there is really demand, other airlines (SA, MK ?) can join in. And, indeed, the only ULH capable aircraft of QF are the 789 and 380. But next year the long 350s (35X) and long 787s (78X) will arrive.