Gasoline prices increased roughly 40% to over 50% in the months following the outbreak of conflict.

 

Based on 2026 data, the war in Iran—which began in late February 2026—has significantly impacted energy markets, with reports indicating gasoline prices increased roughly 40% to over 50% in the months following the outbreak of conflict. 

Impact on Gas Prices (As of May 2026):

• National Average: By early May 2026, the average U.S. gas price approached or exceeded $4.50 per gallon.
• Percentage Increase: Several sources confirm that gasoline and diesel prices rose by over 40–50% from the start of the war on February 28, 2026, due to disruptions in shipping through the Strait of Hormuz.
• Regional Variations: In certain regions, particularly California, gas prices rose over 30% to levels exceeding $6.00 per gallon. 

The rise is largely attributed to the effective shutdown of the Strait of Hormuz, where roughly one-fifth of the world's oil supply passes. Experts indicated that even if the conflict were to end quickly, prices are expected to remain elevated for months due to supply chain disruptions and infrastructure damage. 

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