Originally Posted by FlyerGoldII

This is a serious question - just because a certain plane is flies in one direction between 2 cities does not mean that the same plane always flies in the reverse direction (I am talking about any airline in the world - including AC - can you say that every AC route which has a given plane flying in one direction has that plane always flying the corresponding route in the other direction) - who is to say that in the reverse direction this plane does not fly HNL-SFO.

Maybe just HNL-EWR and HNL-IAD.

I presume this plane does not at all fly HNL-LAX or HNL-ORD or HNL-DEN?