It's not unusual to have late running on Sunday evenings, even when weather is benign. It's a busy time and if there's fairly tight turnarounds, delays can occur for multiple reasons.
On Sunday 23 November 2025, A321 VH-VWT on the 1625 hours afternoon ADL to MEL JQ777 took off at 1730 despite its previous flight JQ776 only arriving five minutes late at 1550 hours from MEL. It arrived MEL at 1900 hours, 45 behind, and is hoped to depart as JQ572, the 1855 hours MEL-BNE at 1930: optimistic.
Sister VH-VWU operated JQ821, the 1505 hours BNE down to SYD arriving at 1822 hours, 42 minutes late.
Another A321, VH-OFP arrived in MEL (ex MCY) as JQ795 at 1837 hours, 127 minutes late compared to its scheduled 1630 hours gate arrival. Looks like it still has to operate JQ528 then JQ535 MEL-SYD and back down to MEL.
VH-OFQ was on JQ568, the 1615 hours MEL-BNE up up and away at 1730 hours with gate arrival becoming 1818 hours, 53 late. Its next duty is the 1900 hours BNE across to PER JQ964 so with a 95 minute turnaround allowance in Brisbane, hopefully that flight won't be as delayed.
A321 VH-OFS is on the PER to BKK (international flight) which is the timetabled 1435 hours that was in the air at 1521. Arrival should be at about 2111 mid evening, 36 late.
VH-OFY is running JQ35, the 1755 hours MEL-DPS with gate arrival predicted at about 1929, 34 minutes tardy.
VH-OYF operated JQ678 from MEL up to sunny DRW, arriving at 1637 hours, 32 minutes past the allotted, so its return as JQ675, the 1650 hours ex DRW is naturally delayed.
VH-OYC is another A321 that isn't punctual, with JQ973 from PER across to MEL arriving at gate at 1709, 64 minutes late, with the plane now on JQ974 from MEL back to PER: this 1720 hours scheduled offering was airborne exactly an hour later, so arrival becomes likely at about 1917 hours, 47 minutes late.
A321 VH-OYD is on the DRW up to Indonesia's DPS JQ83, the 1230 hours that wasn't in the sky until 1554 hours, so arrival should be at 1656 hours, 196 minutes behind the timetable. This was due to inbound JQ82 from DPS not arriving DRW today until 1445 hours, 210 minutes late. Prior to that, the PER to DPS JQ108 had arrived the latter at 0054 this morning Bali time, 199 late.
VH-OYK was scheduled to depart DRW at 1720 hours as JQ689 down to ADL, but this has been put back to the odd time of 1824 hours.
I don't know if any of these delays are due to shortages of air traffic controllers, but irrespective, not a great advertisement for JQ's timekeeping.
