Iran Tensions Push Brent Crude to $110, Rippling Through Airlines and Fuel Supplies

US President Donald Trump's renewed military pressure on Iran has triggered a sharp escalation in worldwide fuel costs and supply shortages, with effects rippling from California gas stations to Indian kitchens and European airline boardrooms. The Strait of Hormuz remains largely closed following months of fighting, cutting off roughly a fifth of global oil shipments that once passed through the waterway and forcing importers to draw down emergency reserves at record speed.

Oil prices have climbed steadily since the conflict intensified in late February. Brent crude futures rose above $109 a barrel on Monday, while jet fuel has hovered near $163 after peaking close to $200. The International Energy Agency warned that inventories are shrinking faster than at any point in recent memory and could approach historic lows by the end of May if current demand holds.

Those higher prices are already reshaping daily life in distant regions. In California, drivers face pump prices that have surged amid reduced imports of Middle Eastern crude and a separate squeeze on alkylate, a key gasoline additive. Indian refiners, ordered by New Delhi to prioritize domestic cooking gas supplies, have cut back on the same additive production, compounding shortages for motorists on the US West Coast. Across much of India, households have reported long lines for liquefied petroleum gas, the primary cooking fuel for hundreds of millions of people.

Airlines are absorbing some of the steepest increases. Spirit Airlines halted operations earlier this month, citing fuel costs as a central factor in its collapse. Ryanair's chief financial officer told CNBC that weaker carriers already under strain before the war could follow Spirit into bankruptcy by winter. Jet fuel ranks as the second-largest expense for most airlines after labor, and carriers with thin margins have little room to absorb sustained spikes.

The disruption has also revived older questions about the security of centralized fossil fuel systems. Ukrainian towns have accelerated moves toward decentralized solar and battery storage after repeated Russian strikes on power plants and grids, a pattern now visible in other conflict zones. Spain's rapid expansion of renewables has helped shield it from some price volatility tied to Middle Eastern supplies. Yet the broader transition remains uneven, leaving many economies exposed to the same chokepoints that have defined oil politics for decades.

Trump posted on social media over the weekend that "the clock is ticking" for Iran and urged faster movement toward a deal. A fragile April ceasefire has so far failed to reopen the strait or lift port blockades, keeping markets on edge. Analysts note that any further escalation could push prices higher still, with limited spare capacity available to offset lost volumes.

The immediate costs fall on consumers and businesses far from the battlefield. Higher gasoline and jet fuel prices feed into food transport, manufacturing and travel expenses, while cooking fuel shortages strain households in developing economies. With inventories low and supply routes constrained, the coming months are likely to test how long economies can sustain these added burdens without deeper policy shifts away from volatile fossil sources.