I am surprised that most consumer advocates are not onto this - taxis are not allowed to put on a fuel surcharge rather they raise the flagfall charge and include it in the "driveaway" price.
Airlines - well mostly, have a hedging policy to preserve prices, and yet their surcharges are based on the pump price.
If they were smart, they would role it into the ticket price, to help increase the yields when the oil (in its normal life cycle) returns to traditional rates.
The spin doctors would have an easier time defending ticket prices rather than defending surcharges.