Summer-end fuel prices have surged, leaving American motorists paying the highest amount ever recorded for the Labor Day holiday this year. With the holiday weekend ranking as one of the busiest travel periods of the year, hitting the open road is now a significantly more expensive endeavor than in years past.

According to the American Automobile Association (AAA), the national average price for regular unleaded gasoline hit $4.15 per gallon on Monday, setting a new record for this particular holiday. Previously, gas prices had never crossed the $4-per-gallon threshold during Labor Day, with the old record of $3.82 standing since September 3, 2012.

AAA data further shows that while current prices have eased from the 2026 peak of $4.56 seen in May, they remain roughly 30% higher year-over-year, as drivers were paying about $3.20 per gallon at this time last year.

"Although gas demand typically dips after the summer driving season wraps up, which usually pushes prices lower, elevated crude oil costs this year are outweighing that seasonal trend," said Brittany Moye, an AAA spokesperson.

Meanwhile, diesel prices have also hit fresh all-time highs just ahead of the long weekend. AAA figures show diesel at $5.90 per gallon on Monday, compared to only $3.71 per gallon a year earlier.

Global Oil Supply Remains Constrained

As of 9:30 a.m. Eastern Time on Monday, the U.S. benchmark West Texas Intermediate (WTI) crude futures were trading around $92 per barrel, compared to approximately $67 right before the Iran conflict erupted on February 28. Similarly, the international Brent crude benchmark was hovering near $97 per barrel, well above its pre-war level of roughly $72.

Oil prices have remained highly volatile throughout the conflict, as tankers have been unable to transit the Strait of Hormuz, severely restricting global supply. Crude serves as the primary feedstock for gasoline and typically accounts for the largest share of the retail pump price.

Data from the U.S. Energy Information Administration (EIA) indicates that roughly 4.9 million barrels per day of crude oil and refined products traversed the Strait of Hormuz during the second quarter of this year, a dramatic drop from the daily average of 21.6 million barrels seen in the fourth quarter of 2025, before the Iranian conflict began.

Additionally, some refineries have halted operations due to both the Iran war and the ongoing Russia-Ukraine conflict, further constraining gasoline supplies.

"Supply disruptions in the Middle East are ongoing, and refineries in both the Middle East and Russia have been damaged by regional conflicts, reducing the volume of product reaching the market," said Andy Lipow, president of Houston-based consultancy Lipow Oil Associates, which specializes in refinery operations analysis.

EIA data shows that as of the week ending August 28, U.S. gasoline inventories were running 6% below their average levels.

Winter Blend Gasoline Could Bring Retail Relief

However, Lipow noted that a potential relief valve for high prices could soon be on the horizon. "The good news for consumers is that the industry will shift to winter-grade gasoline in September, which should provide some measure of relief at the retail level," Lipow said.

According to the EIA, winter-grade gasoline is typically cheaper because it costs less to produce. Summer-grade gasoline uses a more expensive formulation and is normally phased out of production by September 15. This year, in an effort to boost supply and lower prices, the U.S. Environmental Protection Agency announced on August 20 that winter blend gasoline could go on sale as early as September 1, effectively ending the summer blend requirement ahead of schedule.

Still, experts say global oil supply will remain the critical variable steering gasoline price trends. "The market is watching to see whether the U.S. and Iran can reach some kind of agreement that would fully reopen the Strait of Hormuz to all shipping," Lipow said.