U.S.-Iran Peace Optimism Drives Gas Price Drops Despite Supply Crisis

Gasoline prices dropped across North America in late May 2026, driven by falling crude oil costs tied to optimism over a potential U.S.-Iran peace agreement. Dan McTeague, president of Canadians for Affordable Energy, projected a nine-cent-per-litre decline in Ontario gasoline prices on May 22, with diesel dropping nine cents that day and another five cents on Saturday. By May 29, he forecast a further three-cent drop for gasoline and five cents for diesel in the Ottawa area, bringing average pump prices near $1.71 per litre.

The declines followed statements from U.S. President Donald Trump that the United States and Iran were nearing a deal, which reduced the war premium on crude oil. Short-selling on futures markets amplified the downward pressure. In the United States, the national average for regular unleaded gasoline fell to $4.42 per gallon by May 28, a 14-cent decrease from the prior week. States including Iowa, Indiana, and South Dakota saw sharper weekly drops of 16 to 20 cents per gallon. GasBuddy analyst Patrick De Haan projected diesel prices in several Midwestern states could fall 50 cents to $1 per gallon in coming weeks.

However, analysts repeatedly warned that the price relief contradicts underlying fundamentals. McTeague called the drops a head fake, citing a record drawdown in U.S. crude reserves and a 1.6 billion barrel supply gap. He warned that energy prices would remain volatile and high into 2027 due to damaged Middle Eastern infrastructure. The conflict began with U.S. and Israeli airstrikes on Iran on February 28, prompting Iranian retaliations including attacks on shipping vessels in the Strait of Hormuz and a U.S. blockade of Iranian ports. Military escalation continued even as peace talks progressed, with U.S. Central Command conducting defensive strikes on Iranian missile sites and vessels, and Iran reporting it shot down a U.S. drone and fired on an F-35 fighter jet during a fragile ceasefire.

The sustained price increases have reshaped consumer behavior. A Rasmussen Reports survey found 54 percent of American adults are driving less, while 27 percent have postponed essential vehicle maintenance such as brake checks and tire replacements. Despite the recent declines, prices remain roughly $1.20 per gallon higher than a year ago.