Iran War Energy Shock Lifts Oil, Threatens Airline Margins: Hormuz Flows Down 30%, Fuel Costs Surge

The escalating Iran-US conflict has created a structural energy shock rippling across global markets. Oil and fuel flows through the Strait of Hormuz fell by nearly 6 million barrels per day in the first quarter of 2026, a 30% decline that marks a seismic interruption to global energy supply. While some tankers have executed rare undercover transits and LPG carriers are finding alternate routes, the baseline energy supply picture remains severely constrained.

Airlines are absorbing the brunt of this shock. Air New Zealand, Sapporo Holdings (on beverage exports), and other consumer-facing firms are reporting margin compression from elevated fuel costs. Air New Zealand specifically expects a substantial full-year loss as jet fuel prices surge. Oil prices remain elevated, and Brent crude has remained above the $75 range that would support the case for extended supply constraints. Hunt Oil's leadership cited the conflict as a nightmare scenario for energy infrastructure, with damaged capacity potentially keeping production lower through the cycle.

Macro implications are severe for emerging markets. India has requested an extension of its US waiver on Russian oil, signaling supply stress. Turkey's central bank raised its year-end inflationThe rate at which prices rise across an economy. target to 24%, citing energy price effects. Foreign-exchange reserves are eroding across Asia as central banks defend their currencies against oil-driven inflation. Gold is holding steady as a hedge, though higher yields on long-dated Treasuries (now at 5%, the highest since 2007) compete for capital.

The narrative splits energy importers and exporters. Energy producers and defense names benefit from elevated oil and geopolitical risk premiums. Consumer names and low-margin carriers face margin pressure. The risk is asymmetric: if the conflict broadens or infrastructure damage worsens, oil could spike further; if ceasefire talks advance, rapid energy normalization could deflate current pricing.