How the War With Iran Is Driving Gas Prices Above $5 and What It Means for the U.S. Economy

Photograph: Mario Tama/Getty Images

Impact of Iran war on gas prices.

The ongoing conflict between the United States and Iran is already being felt far beyond the battlefield. One of the clearest signs is at the gas pump, where prices in parts of the United States especially California have surged dramatically.

In early March 2026, the average price of gasoline in California climbed above $5 per gallon, reaching roughly $5.20 statewide, while the national average remains around $3.47. The spike is largely tied to disruptions in global oil markets caused by the war.

But the story goes much deeper than just higher fuel costs. The conflict has triggered a chain reaction across global energy markets, supply chains, and the broader economy.

Why the War Is Pushing Fuel Prices Higher

The war began in late February 2026 and quickly escalated tensions in one of the world’s most important energy regions: the Persian Gulf. Impact of Iran war on gas prices

One of the biggest concerns is the disruption of the Strait of Hormuz, a narrow waterway through which roughly 20% of the world’s oil supply normally passes. When tanker traffic slows or stops there, the global oil market immediately reacts.

As a result, oil prices surged above $100 per barrel, the first time in nearly four years that prices have crossed that threshold.

When crude oil prices rise, gasoline and diesel prices soon follow affecting everything from commuting costs to shipping and logistics.

Why California Feels the Pain First

California drivers are experiencing the biggest shock.

The state traditionally has the highest fuel prices in the United States due to higher taxes, environmental regulations, and specialized fuel blends required by law. These factors make the state more vulnerable when global oil markets become unstable.

In some areas of Los Angeles, drivers have already reported prices above $8 per gallon at certain stations, highlighting how quickly prices can spike when supply fears hit the market.