Airlines are cutting capacity again amid $1B surge in Q4 fuel costs — here's what that means for travelers

Air travelers could have fewer flight options — and potentially higher fares — heading into the busy holiday season as some of the country's largest airlines pull back on capacity.

American Airlines, United Airlines and Southwest Airlines are all scaling back or reconsidering planned flight schedules as jet fuel prices surge. The airlines say travel demand remains strong, but the sharp increase in fuel costs is making some lower-profit flights less feasible to operate.

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For American, the latest jump in fuel prices alone is expected to add roughly $1 billion to its fourth-quarter fuel costs compared with the assumptions it made in July. The airline has already adjusted its financial outlook twice this year.

The changes don't necessarily mean travelers should expect widespread cancellations. Instead, airlines are looking at the economics of individual routes and frequencies — particularly flights that generate less revenue.

Fuel is one of an airline's largest operating expenses, which means sudden increases in cost can quickly squeeze profit margins.

American CFO Devon May said fourth-quarter fuel prices have risen by roughly $1 per gallon from the level the airline assumed in July. American estimates that every one-cent change in fuel prices affects its quarterly costs by about $10 million. That makes a $1 increase particularly significant.

Jet fuel prices have been climbing alongside crude oil prices amid the ongoing conflict in Iran. The International Air Transport Association (IATA) reported that, at the time of writing, the global average jet fuel price rose 7.4% to $194.90/bbl compared to the week before.

Airlines can respond to higher fuel bills in several ways, including raising fares, cutting costs or reducing the number of flights they operate. In this case, executives have indicated that capacity reductions are becoming part of the equation.

United has already said some flights that had been scheduled for December will no longer operate . The carrier has also warned that additional adjustments could come in the first quarter of 2027 and beyond if fuel prices remain elevated.