US airfares have climbed 22.4% over the past year, more than six times the broader 3.7% inflation rate, and the driver behind it isn’t a surge in travel demand. It’s the cost of flying planes at all. Jet fuel prices have jumped roughly 91%, from $2.43 to $4.63 a gallon between February and October, after conflict linked to Iran disrupted oil supplies and refining capacity across the region.
Fuel now makes up nearly a third of airline operating expenses in 2026, up from about a quarter the year before. That shift has pushed major US carriers, including American, United, Delta, Southwest and Alaska, toward a strategy that would have looked counterintuitive a year ago: deliberately flying with more empty seats while charging more for the ones they do sell.
American Airlines’ chief commercial officer described the approach bluntly, saying the carrier has been deliberate in prioritizing yield over load factor, proactively securing meaningfully higher fares per passenger in exchange for accepting somewhat emptier planes. In an environment where every gallon of fuel costs nearly twice what it did in February, filling a plane at a discount is no longer the profitable move it used to be.
The numbers show the strategy working, at least on the revenue side. The five major US airlines generated $8.8 billion more in passenger revenue in the third quarter of 2026 than in the same period a year earlier, an 18% increase, even though overall passenger traffic grew by less than 1%. Airlines are extracting substantially more money from roughly the same number of travelers.
That revenue growth hasn't translated cleanly into profit. Delta has forecast absorbing a $6 billion increase in fuel costs this year, against a projected pre-tax profit of just $4.5 billion, a gap that illustrates how much of the industry's higher pricing is simply offsetting costs rather than expanding margins.
The practical effect for travelers is a market where flights are both pricier and, counterintuitively, easier to get seats on, since carriers are intentionally not chasing full planes the way they once did. For an industry still digesting the aftermath of Iran-linked disruption to global oil supply, the current approach looks less like a temporary adjustment and more like the new baseline for how airlines are managing a cost environment that shows no clear sign of easing.
