First of the Wednesday 17 April 2019 morning's from SYD down to MEL, JQ501, the 0605 hours, has had a sleep in as takeoff for A320 VH-VFN was not until 0740. Arrival should be at 0855, 75 late. With school holidays and tomorrow - Holy Thursday - being one of the busiest days for air travel, so there's some 'spillover effect' today - it will be hard for this aircraft to be on time all day unless JQ decides to cancel a return flight.
The MEL - OOL JQ430, the 0600 hours, took off at 0646 with A321 VH-VWT and is arriving at 0839, 39 late. Yesterday afternoon, this plane's previous four flights were between 45 and 95 minutes late arriving, but it overnighted in SYD from 2349 hours so no obvious reason as to why it's late this morning.
JQ560 (0820 hours MEL - BNE) had not taken off by 0914, so it will be at least 40 minutes late into the Sunshine State's capital.