Rated De - your comment re oil price in relation to airline fuel expense makes no sense. You quote USD $100 m to 300mill increase in fuel cost for USD $10 increase per barrel of crude. I would hazard a guess that the increase for some would be much less and for some much more - exactly what fleet size etc are you referring to ? And where does QF for example fit in this ?
Perhaps a percentage increase in fuel cost relative to a percentage increase in crude price might be more relevant as a rule of thumb.
And I do realise that level of fuel price hedging comes into the equation just to confuse the issue further.