Leaving aside the fact that YQ is not a fuel charge specifically anymore (if it ever was), IAG remains fairly heavily hedged in 2015 according to their Q2 earnings presentation. That looks like it will unwind fairly fast in 2016, how much of the gain flows into pricing and how much into the bottom line remains to be seen...

I do wonder why people get so bothered about this, surely for customers YQ only really matters in terms of redemption bookings, which in BA's case are now fundamentally part cash / part miles? For any other bookings, I look at the total price on BA vs total price on other carriers, the breakdown doesn't come into it for me.