Strait of Hormuz Tensions Push Airline Stocks Down as Fuel Costs Rise
Global Aviation Round-Up from Aircraft Value Intelligence (AVN) File photo Editor's Note: To watch a video report that concisely examines the themes of this article, click here . Geopolitical flashpoints have a way of upending the market’s priorities. Investors may spend weeks focused on inflation, interest rates, or corporate earnings, only to have an overseas conflict suddenly dominate trading. On Wall Street, the phenomenon is known as "headline risk." The latest example is unfolding in the Middle East. Renewed friction between the United States and Iran is putting the Strait of Hormuz back in the spotlight, injecting fresh uncertainty into global financial markets. One sector particularly hard hit is aviation. Last week at the NATO summit in Ankara, Turkey, President Trump declared that the Iran cease fire was "over." Subsequently, on July 13, Trump announced that the U.S. would be "taking over" the Strait of Hormuz and reinstating its naval blockade on Iran. The result has been a jittery stock market. Major indexes have swung sharply as traders react to each new development out of the Middle East, and some of the market’s biggest losers have been airline stocks. The connection isn’t hard to understand. The Strait of Hormuz is one of the world’s most important oil transit routes, carrying roughly one-fifth of global petroleum supplies. Whenever shipping through the narrow waterway appears threatened, oil traders immediately begin pricing in the possibility of supply disruptions. Even if those disruptions never materialize, crude prices can spike simply because the risk has increased. That’s bad news for an industry that runs on fuel. For most airlines, jet fuel ranks just behind labor as the largest operating expense. Fuel costs can account for 20% to 30% of an airline’s budget, so even a modest jump in oil prices can quickly eat into profit margins. Unlike energy companies, airlines don’t enjoy a windfall when oil climbs. In fact, they’re often caught flat-footed. Seats may have been sold months in advance at fixed prices, leaving carriers little choice but to absorb higher fuel bills until they can gradually adjust fares. That’s why airline stocks often sell off almost automatically whenever oil starts climbing on geopolitical fears. There’s another problem that doesn’t get as much attention: flight operations themselves. Carriers serving Europe, Asia, and the Middle East sometimes have to reroute aircraft to avoid conflict zones or closed airspace. Those detours burn more fuel, lengthen flight times, complicate crew scheduling, and raise operating costs. On a busy international network, those expenses can add up quickly. Taken together, higher fuel bills and longer routes create an unwelcome squeeze on profitability. Investors know the pattern well. When geopolitical risk rises, money tends to flow out of economically sensitive industries and into sectors viewed as safer. Airlines, cruise operators, hotels, and other travel-related businesses often come under pressure, while energy producers and defensive sectors such as utilities or healthcare attract fresh buying. That shift isn’t always a reflection of company fundamentals. It’s often a response to uncertainty itself, and Wall Street hates uncertainty. Past Is Prologue History offers plenty of examples. During the Gulf War, after the September 11 terrorist attacks, and during previous confrontations involving Iran, airline shares generally lagged the broader market. Once oil prices retreated and tensions eased, many carriers recovered. But investors who held through the volatility had to endure some rough stretches along the way. This latest episode has followed a familiar script. Reports of military escalation have pushed crude prices higher and weighed on airline shares. Headlines hinting at diplomatic progress have sparked equally swift rebounds. Those reversals have become almost routine, producing the kind of volatile trading sessions that can leave investors wondering whether they’re watching markets or ping-pong. Indeed, the almost predictable reaction of financial markets to news out of the Middle East has sparked concerns about insider trading. None of that necessarily changes the industry’s long-term outlook. U.S. airlines are generally in stronger financial shape than they were before the pandemic, and demand for both leisure and business travel has remained surprisingly resilient. Travelers have continued booking vacations and business trips despite higher ticket prices, giving carriers some pricing power that didn’t exist a decade ago. Still, there’s a limit to how much cost inflation airlines can pass along. If crude oil remains elevated for an extended period, analysts will almost certainly begin trimming earnings forecasts. Carriers with extensive international operations or limited fuel-hedging programs could face the greatest pressure. Aircraft manufacturers are affected as well. Notably, Airbus recently lowered its forecast for global aircraft demand over the next 20 years, citing the economic effects of the Iran conflict, trade tensions, and a softer-than-expected post-pandemic recovery. The broader market faces a similar dilemma. Higher energy prices can reignite inflation just as central banks have been looking for room to ease monetary policy. If oil stays expensive, policymakers may find themselves reluctant to cut interest rates, even if economic growth begins to cool. Liquidity is the lifeblood of equity markets; investors turn bearish when the monetary spigot tightens. For now, every development involving Iran, U.S. military policy, or commercial shipping through the Strait of Hormuz is likely to keep traders on edge. For airlines and the OEMs that serve them with aircraft, the flight path will probably remain bumpy for a while. John Persinos is the editor-in-chief of Aircraft Value Intelligence . Previously, John covered global financial markets as the editorial director of Investing Daily .