American Airlines cut its full-year 2026 earnings forecast on Wednesday, becoming the latest major U.S. corporation to lower guidance as the Iran war drives jet fuel into a price band that no airline budgeted for at the start of the fiscal year. The carrier, in a filing accompanying its first-quarter earnings release, attributed the reduction to a roughly 40 percent rise in jet fuel costs since hostilities began in late February, costs that the company said had added "billions of dollars in industry-wide expense" over the relevant period and that are not expected to fully reverse before the third quarter. CNBC was first to report the revised guidance.

The announcement followed a broader pattern across the carrier sector that has developed over the past four weeks, with airlines having already cut more than 5 percent of scheduled flights globally to conserve fuel and several Southeast Asian carriers having canceled long-haul routes outright. The aviation industry consumes approximately 8 percent of global refined petroleum output, according to the International Energy Agency, and is among the most directly exposed sectors to the Hormuz supply disruption because jet fuel is a high-quality refined product whose spreads over crude have widened sharply during the period of Gulf refining-complex disruption that the strait closure produced.

The Cost Path

Jet fuel prices have risen approximately 40 percent since the war began, tracking the broader crude oil increase but with the additional pressure of widened crack spreads on refined products. Crude oil itself has retreated from its peak above $118 per barrel to the mid-$80s following Iran's partial reopening of the strait on April 17, but the decline has not fully flowed through to refined products because refiners face their own cost pressures and because the disruption to Gulf refining capacity that the closure produced will take longer to unwind than the headline crude price suggests.

American Airlines is not the only carrier signaling fuel-driven margin compression. United Airlines and Delta Air Lines have both indicated in recent investor communications that fuel costs will compress margins significantly in the second and third quarters of 2026, with United's most recent investor day presentation projecting a year-over-year increase in fuel expense of approximately $1.8 billion if current prices hold through the third quarter. Southwest Airlines, which hedges fuel more aggressively than its competitors and which therefore enters the current price environment with a substantial book of forward contracts at lower prices, is better positioned in the near term but is not immune to the medium-term effects of an extended Hormuz disruption.

The Trade Deficit

The U.S. monthly trade deficit widened to $57.3 billion in February, up from $54.7 billion in January, the Bureau of Economic Analysis reported earlier this month. The widening reflected an increase in imports that exceeded the increase in exports, with petroleum imports having risen sharply on both volume and price effects during the early phase of the war. The deficit is likely to widen further in the March and April readings as the higher energy import costs flow through the accounts and as the export side absorbs the secondary effects of foreign customers reducing orders during the period of acute price uncertainty.

Spillovers Beyond Aviation

The fuel cost surge has been felt across sectors beyond aviation, with diesel prices remaining elevated approximately 30 percent above pre-war levels according to American Trucking Associations data, and that increase propagating through the entire freight network in ways that show up in shipping rates, in inventory carrying costs, and in the input costs of every product that moves by truck. Manufacturing input costs have risen across petroleum-derived feedstock categories that include plastics, industrial chemicals, fertilizers, and pharmaceuticals, with agricultural producers facing simultaneous increases in diesel, fertilizer, and transportation costs that the Department of Agriculture has flagged as the principal driver of the modest food-price tick now visible in the most recent CPI release.

Tesla reported better-than-expected earnings Tuesday but Chief Executive Elon Musk used the earnings call to warn that the company's capital expenditure would "rise substantially" through the remainder of 2026, in part because of supply chain disruptions related to the Hormuz crisis, in remarks reported by CNBC. IBM and ServiceNow both traded lower in after-hours trading following earnings reports that, while broadly in line with analyst expectations on revenue, contained forward-looking commentary about rising input costs and customer caution that markets read as more cautious than the headline numbers suggested.

The Asymmetric Recovery

The partial reopening of the Strait of Hormuz on April 17 sent oil prices down 11 percent in a single session and produced an immediate equity rally that pushed major indices to record highs, on the assumption among traders that the lower oil price would translate quickly into corporate earnings recovery. The corporate earnings now arriving suggest that the recovery is operating on a slower and more uneven schedule than equity markets initially priced, because the damage to corporate margins, consumer budgets, and supply-chain plans that occurred during the eight weeks of elevated prices does not reverse instantly when the headline crude price declines, and because the underlying conditions of the conflict, including the continued naval interdiction architecture, the indefinite ceasefire, and the partially-open Iranian-conditioned status of the strait, do not yet constitute the environment in which corporate planning departments are willing to restore their forecasts to pre-war assumptions. American Airlines' guidance cut on Wednesday reflects that more cautious institutional reading of the recovery's pace, and several Wall Street equity strategists indicated in notes Wednesday afternoon that they expect additional guidance reductions of comparable magnitude from other large transportation, manufacturing, and consumer-facing companies as the second-quarter earnings cycle continues over the next four weeks.