The ongoing Iran war has choked global jet‑fuel supplies, sending a ripple through airlines that rely on the commodity for summer schedules. With the Strait of Hormuz virtually shut, oil exports from the Persian Gulf have stalled, forcing refineries elsewhere to trim kerosene output. Carriers now face higher costs and potential cancellations as the northern‑hemisphere holiday peak looms, and could disrupt connections across Europe.

Middle‑East refiners, which normally produce more than 10% of the world’s jet fuel, are scrambling to meet contractual obligations beyond the region. Shipping delays have left airlines like Deutsche Lufthansa scrambling for alternative supplies, while spot prices for kerosene have jumped sharply on European exchanges. The squeeze is already prompting airlines to re‑evaluate route capacity and hedge fuel exposure more aggressively.

Investors watch the fallout closely, as tighter fuel margins could erode airline profitability just as demand surges. Analysts warn that any prolonged shortage may force carriers to raise ticket prices, risking demand elasticity in price‑sensitive leisure segments. With the summer window narrowing, the current supply crunch threatens to dent earnings forecasts for several major carriers this quarter.