The price a driver pays for a gallon of regular gasoline in the United States climbed to $4.48 on Tuesday, according to the American Automobile Association’s latest weekly survey. That level represents a rise of 31 cents in just seven days and a cumulative increase of roughly 50 percent since the Iran‑U.S. conflict erupted in late March. The surge is not an isolated domestic phenomenon; it mirrors a broader shock to the global oil market that began when the Strait of Hormuz – the narrow Persian Gulf passage through which about 20 percent of the world’s crude oil flows – became effectively blocked by military activity.
Crude oil, the primary feedstock for gasoline, has been on an upward swing for the past two months. The International Energy Agency (IEA) described the disruption as the largest supply interruption in the history of the market, noting that spot prices for West Texas Intermediate (WTI) touched $112 per barrel in early April. In the United States, the Energy Information Administration (EIA) estimates that crude oil accounts for roughly 51 percent of the retail gasoline price, with federal and state taxes adding another 17 percent, refining margins 14 percent, and distribution and marketing the remaining share.
The immediate catalyst for the price jump was the closure of the Hormuz corridor. As naval forces from both sides engaged, tankers carrying crude were forced to anchor, unable to transit the strait. The resulting supply shortfall pushed forward freight rates and insurance premiums, creating a cascading effect on downstream fuel costs. "When the strait is constrained, there is a fundamental shortfall that will exist globally," said Rob Smith, director of global fuel retail at S&P Global Energy. "That upward pressure on prices is exerted every day the passage is closed."
The United States also contributed to the tightening of supplies in April when it imposed a ban on Iranian ports to curb Tehran’s oil exports. Jim Krane, an energy research fellow at Rice University’s Baker Institute, explained that Iran had been moving an unusually high volume of oil to world markets, which had helped temper prices. "The decision to block those exports was intended to pressure Iran, but it also removed a source of supply that the market had come to rely on," Krane said.
The price trajectory has not been linear. In mid‑April, a tentative cease‑fire announcement sparked optimism among market participants, and gasoline prices fell for nearly two weeks. Retailers responded to the dip, and spot gasoline prices slid in tandem with crude. However, the optimism proved short‑lived as hostilities resumed and the strait remained closed, prompting a reversal of the earlier decline. "After the initial cease‑fire, crude prices came down, and retailers lowered pump prices," Smith recalled. "But the fundamental supply constraint reasserted itself once the conflict continued."
The correlation between crude and gasoline prices is evident in the data. Bob Kleinberg, an adjunct senior research scholar at Columbia University’s Center on Global Energy Policy, observed that the weekly movements of the U.S. gasoline price have tracked the shape of the WTI price curve with only a modest lag. "Not much of a mystery here," he said. "The curves follow the same pattern, with very little delay."
Regional variations persist. States with higher fuel taxes and more expensive refining operations, such as California, continue to see pump prices well above the national average. The EIA’s breakdown shows that taxes alone contribute about one‑sixth of the retail price, a factor that magnifies the impact of wholesale cost spikes.
Looking ahead, analysts caution that even a durable diplomatic resolution would not instantly restore pre‑conflict price levels. "If both sides agree to keep Hormuz open, it will still take months for the market to unwind the risk premium that has built up," Smith warned. "Shippers and insurers will be reluctant to treat the route as low‑risk until they see a sustained period of stability."
The broader geopolitical context underscores the vulnerability of global energy supply chains to regional flashpoints. The Hormuz strait has been a strategic chokepoint since the 1970s, and its closure in 2023 during the Iran‑U.S. confrontation demonstrated how quickly a localized conflict can reverberate through worldwide fuel markets. The current price level for U.S. gasoline surpasses the figures seen in early May 2022, a period that itself was marked by elevated prices due to the fallout from Russia’s invasion of Ukraine.
For policymakers, the situation presents a dilemma: balancing the strategic objective of pressuring Iran against the domestic economic pain caused by higher fuel costs. The U.S. Treasury and the Department of Energy have been monitoring the situation closely, though neither agency has announced immediate measures to offset the price surge.
In the meantime, consumers across the United States will continue to feel the impact at the pump. The combination of constrained crude supplies, heightened insurance costs, and the removal of Iranian export volumes has created a perfect storm that is unlikely to abate until the Strait of Hormuz is reliably open and the risk premium recedes. As the conflict drags on, the price of gasoline will remain a barometer of the broader geopolitical tensions that shape the global energy landscape.