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Analysis-Record demand can’t save US airlines from Iran war fuel shock

By Thomson Reuters Apr 23, 2026 | 4:04 AM

By Rajesh Kumar Singh

CHICAGO, April 23 (Reuters) – U.S. airlines are seeing their best passenger numbers ever, cramming more people onto their planes and boosting revenues, yet in a cruel paradox, a war thousands of miles away is torching profits through a crushing fuel cost burden.

United Airlines cut its full-year profit forecast by roughly a third this week. Alaska Air withdrew its outlook ​entirely. Delta Air Lines scrapped planned growth for the quarter, while Southwest Airlines declined to update its full-year outlook, saying it “would ‌not be productive at this time.”

In each case, fuel costs are rising faster than airlines can raise fares.

The disruption marks the first clear instance of the Iran conflict forcing major American companies to cut operations, lower forecasts and pass costs to consumers, with no certainty about when it ends.

United flew more passengers in the first three months of this year than in any January to March period in its history.

The Chicago-based carrier also took in more revenue than ever before in any first quarter, with ticket ‌prices rising ​across its network. It still slashed its profit forecast.

That is the bind facing the industry: demand ⁠is strong, but costs are rising faster.

Jet ⁠fuel prices have roughly doubled since the United States and Israel attacked Iran in late February, pushing up costs so quickly that fare increases are lagging.

Southwest said it expects second-quarter fuel prices of about $4.10 to $4.15 per gallon, up from $2.73 in the first quarter.

Delta expects to recover only 40 to 50 cents of every extra dollar it spends on fuel this quarter, with United seeing a similar gap before improving ​later in the year.

Alaska is recovering only about one-third of the increase — a shortfall large enough to force it to withdraw its forecast and warn of a loss this quarter.

United cut its full-year earnings outlook range to $7 to $11 per share from $12 to $14 just two months ago, with ⁠the unusually wide range reflecting uncertainty over fuel. Alaska did not publish a range at ⁠all.

TRIMMING MARGINAL FLYING

Airlines are already cutting flights, even as planes remain full, because some routes no longer make ​sense at current fuel prices.

“It simply doesn’t make sense to fly marginal flights that will lose cash in a higher fuel price environment,” United CEO ​Scott Kirby said.

Delta is removing all planned growth for the quarter, cutting capacity by more than 3.5 percentage points ‌from earlier targets. United has cut about 5 percentage points of planned flying.

Alaska has pulled back in Mexico and trimmed late-night departures, while Southwest has cut weaker routes and suspended operations at Chicago O’Hare and Washington Dulles.

The reductions are focused on lower-margin flying — overnight trips, midweek travel and thinner leisure routes where higher fuel quickly erodes profitability.

“The best type of fuel recapture is not to purchase the fuel in the first place,” Delta Chief Executive Ed ⁠Bastian said.

FARES RISING, BUT NOT ENOUGH

Delta’s revenue rose nearly 10% in the first quarter, and bookings have continued to grow into the current period.

United has implemented multiple fare increases and higher baggage fees, with prices rising about 12% in early March and climbing further later in the month. Alaska ⁠said fares in its core markets have risen more ‌than 20% in recent weeks without weakening demand.

“The rapidity with which fares have gone up, and the ⁠stability of bookings over the last several weeks, suggest people really want to travel,” Alaska finance chief ​Shane Tackett said.

But ‌fare increases take time to feed through. Many passengers flying today booked before fuel prices spiked, ​limiting how quickly ⁠airlines can recover higher costs.Even when the industry moves together, pricing lags.

Alaska said it would have been profitable this quarter but for fuel.

PRESSURE IS STARTING TO SPREAD

The impact is no longer confined to airlines.

GE Aerospace, which makes engines for most U.S. commercial jets, said it has built a more cautious second half into its outlook, reflecting the risk that airlines could delay maintenance work, engine overhauls and spending if high fuel prices persist.

Chief Executive Larry Culp told Reuters the company held its outlook despite strong results, citing uncertainty from the conflict.

“We are at war, and that creates some uncertainty,” Culp said.

(Reporting by Rajesh ​Kumar Singh; Editing by Lisa Shumaker)