In something that seems rare reading this thread, it appears that all three QF flights ex-LAX might depart on time tonight. QF12 transcon is already in LAX having arrived early.
Himeno, if we call 'on time' 'within 15 minutes but lately it has indeed been pretty rare. The main problem appears to be the QF12 connection and the difficulty in departing JFK on time if QF11 is delayed: the layover at JFK appears oftern to increase in duration from the timetabled timespan.
On Wednesday 5 July, QF81 (1025 hours SYD - SIN) departed at 1059 with the 1725 hours predicted arrival to be 35 minutes tardy.
The ex MEL QF93 was further delayed than QF predicted with departure not until 1102, meaning same day estimated arrival in LAX at 0825, 110 minutes late. If the B744 on QF11 is held, it will be delayed from 0820 to at least 0930 in its departure for JFK.
QF129 (0935 hours SYD - PVG) departed at 1030 so it should be at its destination at 1940 this evening (70 late), delaying the overnight returning QF130.
The 1230 hours SYD - DFW A388 (QF7) is often a departure on the knocker but today it was delayed until 1313; arrival same day should be at 1330 hours, half an hour behind.
QF1 departed DXB at 0449 hours, 159 minutes late with LHR arrival suggested at 0920, 125 minutes behind schedule. However this in theory should be in way more than sufficient time to form QF10 to MEL, the 1330 hours that has as its first stop DXB.
QF10 into MEL tonight (ex DXB and earlier, LHR) is expected at 2125 hours, half an hour behind schedule, so tonight's QF9 will be at least slightly later than the timetabled expectation of a 2255 hours departure.