US Fuel Prices Hit Record Labor Day High Amid Iran War

American drivers faced the most expensive Labor Day weekend in history this year, with the national average for regular gasoline reaching $4.15 per gallon on Monday — the first time gas has ever topped $4 on the holiday, according to AP News. The previous Labor Day record of $3.82 was set in 2012, and prices are nearly a dollar higher than the $3.20 average drivers paid at this time last year.

The record prices stem from a convergence of geopolitical and domestic pressures: the six-month Iran War has disrupted global oil flows through the Strait of Hormuz, while U.S. refineries strain at 98% capacity amid unusually harsh Texas heat.

Iran War Disrupts Global Oil Supply

Prices surged after the U.S. and Israel attacked Iran on February 28, and they have not settled since. Crude oil traffic through the Strait of Hormuz — a critical waterway that carried roughly one-fifth of the world’s oil during peacetime — has plunged dramatically. An estimated 4.9 million barrels of crude oil and petroleum liquids moved through the Strait daily in Q2 2026, down from 21.6 million barrels per day in Q4 2025 before the conflict, according to CNBC and the U.S. Energy Information Administration.

West Texas Intermediate crude was trading at roughly $92 per barrel on Monday, compared with about $67 before the war began. Brent crude reached approximately $97 per barrel, up from roughly $72 pre-war. An interim peace deal reached in June collapsed in July when fighting resumed, sending prices climbing once again.

“Everything points to the Iran War and the Strait of Hormuz,” said Tom Seng, a professor of energy finance at Texas Christian University.

Diesel Hits Record Highs

The pain extends well beyond the gas pump. Diesel reached a national average of $5.90 per gallon on Monday — a record — after hitting $5.85 on Friday, according to AP News. Diesel prices have jumped more than 60% from $3.67 before the war began.

Because diesel powers the trucks, trains, and ships that move goods across the country, record diesel prices are translating into higher costs throughout the economy. Fuel accounts for roughly 15% to 30% of the total cost of food, according to the Independent Grocers Alliance. Amazon, UPS, FedEx, and USPS have all added fuel surcharges on packages.

“Diesel price has a very, very direct impact on everything that moves on pretty much any mode,” said Ajesh Kapoor, CEO of trucking technology company SemiCab.

$100 Billion Consumer Burden

US consumers have paid an additional $100 billion for petrol and diesel in the six months since the war began, according to a tracker from Brown University’s Watson Institute. That works out to roughly $763 per household based on 131 million households nationwide, as Al Jazeera reported.

Regular gasoline prices have climbed 39% from about $2.98 before the war to $4.15 per gallon, while diesel has surged more than 60%. The increases are hitting some states harder than others: California has the nation’s highest average gas price at $5.85 per gallon, followed by Washington ($5.51), Hawaii ($5.39), and Alaska ($5.03). Indiana has the lowest at $3.43.

The financial strain is reshaping consumer behavior. Nicole Collins, a Philadelphia resident traveling to South Carolina for the holiday, said her family has stayed close to home all summer because driving has become too expensive. “Gas is pretty high right now. It doesn’t help that we also have a baby,” Collins told AP. “It doesn’t really seem like there’s an end to it.”

Refinery Strain and the EPA Waiver

Beyond the geopolitical crisis, domestic refinery operations are adding to the pressure. U.S. refineries are running at 98% capacity, many in the unusually harsh Texas heat. Ukrainian drone attacks on Russian refineries are squeezing diesel supplies, and Chinese refiners are seeing declining outputs.

“There’s just less gasoline coming out of those refineries,” said Matthew Metzgar, a clinical professor of economics at UNC Charlotte.

In response, the EPA announced on August 20 that winter-blend gasoline could be sold beginning September 1 — effectively ending summer-blend requirements early to boost supply. Winter-grade gas is cheaper to produce, and analysts at Energy News Beat suggest the move could reduce prices by up to 25 cents per gallon.

“The good news for consumers is that the industry transitions in September to winter-grade gas, which will provide some measure of relief at the pump,” said Andy Lipow, president of Lipow Oil Associates in Houston.

Political and Economic Implications

The sustained price pressure is weighing on consumer sentiment and the political landscape. The Conference Board’s consumer confidence index dipped to 89.4 in August — the lowest level in seven months — as Americans contend with five consecutive years of elevated inflation, according to The Guardian.

With midterm elections fewer than 70 days away, AP-NORC polling this summer showed two out of three U.S. adults disapprove of how President Trump is handling the economy. Energy Secretary Chris Wright acknowledged the challenge on ABC’s “This Week,” saying, “Yes, they’re higher today, but we’re doing everything we can to push them down.” He pointed to futures prices suggesting gasoline could fall by about 35 cents by November.

What to Watch

Analysts say the trajectory of fuel prices hinges on whether Washington and Tehran can reach a durable agreement to reopen the Strait of Hormuz. “The market is waiting to see whether the U.S. and Iran come to some agreement where the Strait of Hormuz is open to all traffic,” Lipow said.

While the national average remains well below the all-time record of $5.02 set in June 2022, the sustained elevation of both gasoline and diesel prices is testing American households and businesses alike. With no diplomatic breakthrough in sight, consumers may need to brace for continued pain at the pump in the months ahead.