I do that, and just do via if you are doing multi sector days. YSSY-YBBN-YSSY-YBCG-YSSY as an example.
If you use roster busta or something you may find it easier to do it leg by leg.
The iCal exporter can be reconfigured to, but I'm not smart enough
My suggestion would be to get it on a mobile device, much more convenient day to day.