Hi!
It depends if you are in 747 or A380 world. On the A380 you fly to Singapore and LA, and do around 7 to 8 trips over the 2 month roster period. On average the Singapore trip is 3 days away and LA is 4 days.
Those who fly on the 747 and other long haul aircraft fly everywhere on the Qantas international network. Some of the trips are much longer than on the A380.