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Americans heading to the beach, the barbecue, or anywhere else this Labor Day weekend will feel it at the pump. The national average gasoline price is projected to hit $4.03 per gallon for the holiday, a record for the occasion and a sharp reminder that seven months of US-Iran military tensions have reshaped the energy landscape.
That $4.03 figure is already looking conservative. Data from GasBuddy and AAA put the national average between $4.13 and $4.15 per gallon in early September, well above both the projected record and the previous Labor Day high of $3.83 set back in 2012.
How we got here
The price spike traces directly to the conflict with Iran, which began with strikes in late February 2026. Fighting has disrupted oil shipments through the Strait of Hormuz, the narrow waterway connecting the Persian Gulf to the open ocean. Roughly one-fifth of the world’s petroleum passes through it on any given day, making it the single most consequential bottleneck in global energy.
With that chokepoint under threat, Brent crude has remained stubbornly above $90 per barrel, with recent prices climbing as high as $96. That kind of sustained elevation in the raw material cost gets passed straight through to drivers.
A brief ceasefire in June 2026 offered temporary relief, pushing prices back below $4. But the fighting resumed, and so did the upward march at the pump.
Diesel has been hit even harder. The national average for diesel reached an all-time high of $5.85 per gallon.
The damage to household budgets
Last Labor Day, Americans were paying roughly $3.16 to $3.20 per gallon. That means this year’s prices represent roughly a 27% to 30% jump in barely twelve months.
A tracker maintained by Brown University estimates that higher gasoline and diesel costs since the conflict began have added more than $740 to $746 in extra fuel expenses per household.
Supply-side pressures add to the problem
US refinery capacity is running near 98%, which leaves almost no room to ramp up production in response to a crisis. Meanwhile, domestic inventories sit below the five-year average. Heavy exports of refined US products are also tightening the domestic market, with American refineries shipping gasoline and diesel abroad at elevated rates.
Political fallout and what to watch
President Trump faces growing scrutiny over the sustained high prices, particularly with midterm elections on the horizon. Energy costs were a centerpiece of his economic messaging, and the prolonged conflict with Iran has undercut any claim that the situation is under control.
Any escalation could push Brent past $100. On the other hand, a credible ceasefire or de-escalation could trigger a sharp pullback, similar to the brief dip below $4 that accompanied June’s short-lived truce.
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