Interesting to see that Qantas will operate QF1 and QF2 via Darwin on two days this week, instead of the usual stop in Singapore. As far as I am aware, this would set the record for the longest A380 passenger sector?
QF001 SYD1700 – 2115DRW2300 – 0615+1LHR 388 24MAR20 / 25MAR20
QF002 LHR2035 – 2355+1DRW0115+2 – 0700+2SYD 388 24MAR20 / 25MAR20
Probably via DRW as it is the shortest route, more or less the same than the shortest route via Asia, HKG, which is virtually on the great circle route (shown as just 2mi longer on GC mapper) and there is already a flight via PER. Unlikely to work on a permanent commercial basis hence PER is used.