This is now standard sort of stuff around the domestic network Peter! And thats on a good morning!
For example, on a Melbourne to Sydney sector, there is 20 minutes of Air Traffic Holding fuel that is required at all times - this increases to 25+ minutes at some times of the day.
If MEL or SYD goes to single runway operations you're looking at 40 minutes plus.
There is also the issue of the 80 movements per hour cap in Sydney, and the use of Runway 34R.
So, for a SYD - MEL sector with northerly winds in Sydney, you're looking at 15+ minutes of taxi time, then waiting at the holding point for other aircraft/movement cap (add a good 10 minutes), your flight which takes about 1:05 (plus about 8 minutes added to do the world's silliest departure out to the east), then say 10 minutes of traffic delay in Melbourne, 10 minute taxi... and you're already at 1:58 for the sector.
It doesn't take much!
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