I don't disagree, but will say that US doesn't really have the available cash to spend on hedging fuel. That's really why they stopped - betting wrong in late 2008 cost a bunch and they don't want to be caught by that mistake again. All this about "natural hedges" is spin. That "natural hedge" works OK as long as the price of oil/fuel changes gradually over time and US can raise fares/ancillary income to match.
The way US hedged (and (presumably HP before the merger) was the wrong way to hedge. US shot for about 50% of a quarters needed fuel hedged when the quarter started. 6 months before they have little or no hedges in place for that quarter. In short, they hedged short term, which is why they lost a bundle on the hedges when the price of oil collapsed in mid-2008 - the short term strategy meand they had hedges at $120, $130, $140 when the price went to less than $40/bbl.
There are two ways to hedge, and the first is no guarantee. 1 - accept that the price of oil will tend to increase over the long term so hedge long term. WN has some hedges in place 3-4 years out but even they were caught by the price collapse in late 2008, just not as badly as US. 2 - Don't worry about cutting fuel expense by hedging but use hedges to get a known cost for a major item on the expense side of the P&L statement. That's what AS does, again using longer-term hedges. They effectively fix a big chunk of their future cost of fuel using instruments that don't lose money if oil prices drop.
Jim