European airlines are scrambling to secure jet fuel supplies as the escalating conflict in Iran chokes off critical import routes, exposing the continent's growing dependence on external energy sources and threatening to reshape international air travel for years to come.

The crisis has sent long-haul flight fares climbing sharply across major European carriers, with industry analysts warning that prices could rise by 20 to 30 percent on transatlantic and Asia-Pacific routes if the supply disruption extends beyond the summer travel season. According to OilPrice.com, the war in Iran has effectively cut most of Europe's jet fuel imports from the Middle East, a region that has historically supplied roughly 40 percent of the continent's aviation fuel.

The supply shock arrives at a particularly vulnerable moment for European aviation. Over the past 18 years, the continent has witnessed a steady erosion of its refining capacity, with dozens of facilities either shutting down permanently or converting to biofuel production in response to stricter environmental regulations and shifting energy policies.

A Refining Sector in Decline

Europe's refining landscape has transformed dramatically since 2008. Major facilities in countries including France, Italy, Sweden, and the United Kingdom have closed their doors, victims of thin profit margins, aging infrastructure, and increasingly stringent EU climate directives that have made traditional petroleum refining less economically viable.

The closures have reduced Europe's jet fuel production capacity by approximately 35 percent over the past two decades, according to industry estimates. Meanwhile, several remaining refineries have pivoted toward producing sustainable aviation fuel (SAF) and other biofuels—a transition encouraged by European climate policy but one that has further constrained conventional jet fuel output.

This structural shift was manageable when global supply chains functioned smoothly and Middle Eastern producers could readily fill the gap. The Iran conflict has shattered that equilibrium.

Middle East Supply Routes Severed

The war has disrupted maritime shipping lanes through the Strait of Hormuz and raised insurance costs for tankers operating in the Persian Gulf to prohibitive levels. Iranian jet fuel exports, which previously flowed to European markets through established trading networks, have ceased almost entirely.

Regional instability has also affected production and export capacity in neighboring countries, creating a ripple effect across global fuel markets. European airlines, which operate some of the world's most fuel-intensive long-haul routes, suddenly find themselves competing with Asian carriers for limited supplies from alternative sources in India, South Korea, and Singapore.

"The European aviation sector built its expansion on the assumption of reliable, affordable fuel imports," said one industry consultant who requested anonymity. "That assumption is now being tested in real time."

Carriers Adjust Routes and Pricing

Major European carriers including Lufthansa, Air France-KLM, and British Airways have begun implementing fuel surcharges on long-haul tickets, with some routes seeing increases exceeding €100 per passenger. Budget carriers focusing on short-haul European routes have been less affected, but even they face pressure as jet fuel spot prices in Amsterdam-Rotterdam-Antwerp—Europe's key trading hub—have climbed nearly 45 percent since the conflict began.

Some airlines are reportedly exploring operational adjustments, including rerouting certain Asia-bound flights through fuel stops in the Middle East or North Africa where supplies remain more stable, though this adds flight time and operational complexity.

The crisis has also accelerated discussions around fuel hedging strategies and long-term supply contracts, with carriers seeking to lock in prices and volumes amid the uncertainty.

Policy Implications and Long-Term Outlook

European policymakers now face difficult questions about energy security in the aviation sector. The current crisis highlights the unintended consequences of refining capacity reductions undertaken in pursuit of climate goals, even as demand for air travel has continued to grow.

Some industry voices are calling for a reassessment of policies that encouraged refinery closures, arguing that Europe needs to maintain a minimum level of domestic fuel production capacity for strategic reasons. Others contend that the solution lies in accelerating the transition to sustainable aviation fuels, though SAF currently accounts for less than 2 percent of total jet fuel consumption and faces significant scaling challenges.

The International Air Transport Association has warned that prolonged fuel supply constraints could force capacity reductions on certain routes, potentially affecting connectivity between Europe and key markets in Asia and the Americas.

For now, travelers planning long-haul journeys from European airports should expect higher fares and potentially reduced frequency on some routes. The duration and intensity of the Iran conflict will largely determine whether this crisis represents a temporary shock or the beginning of a structural realignment in European aviation economics.

As summer approaches—traditionally the peak season for transatlantic and leisure travel—airlines and passengers alike are watching fuel markets closely, hoping for stabilization that currently appears elusive.