Average U.S. gas prices have climbed to $4.10 per gallon as the war in Iran approaches its sixth month, a significant increase from the $3.19 average recorded at this time last year, according to data released Aug. 26. The rise in fuel costs follows months of instability and supply chain disruptions in the Strait of Hormuz, a critical maritime chokepoint.
The surge in fuel costs comes as the conflict in the Middle East persists despite earlier predictions of a swift resolution. President Donald Trump, who announced the military operation against Iran in coordination with Israel on Feb. 28, originally predicted the conflict would last only four to five weeks. However, the war has stretched toward a six-month duration, marked by the deaths of 18 service members and failed diplomatic efforts, including a memorandum of understanding that was reached in June but collapsed in July.
The volatility in energy markets has been exacerbated by renewed military actions. On July 29, 2026, the U.S. military conducted a heavy wave of strikes against Iran in response to an attempted attack on U.S. forces. U.S. Central Command confirmed that CENTCOM assets struck dozens of targets belonging to the Islamic Revolutionary Guard Corps (IRGC), including military command centers, missile and drone facilities, coastal surveillance and defense sites, and maritime capabilities. These strikes were reported to have occurred in southern Iran, with explosions heard in areas including Bandar Abbas and the Persian Gulf island of Kish.
The instability in the Strait of Hormuz remains a primary driver of global oil and gas price increases. The waterway serves as a critical chokepoint for approximately 20% of the world's oil shipments, with more than 3,000 ships typically using the strait every month to transport crude oil, refined petroleum, and liquid natural gas to markets in China, India, Japan, and South Korea. MarineTraffic data from July 29 showed that vessel traffic through the chokepoint had dropped significantly, with only 14 commercial ships passing through the Strait of Hormuz in a 24-hour period, compared to a pre-war average of approximately 120 crossings per day.
While recent market optimism has caused some fluctuations, prices remain high. On June 18, 2026, the average U.S. price for a gallon of gas fell below $4 for the first time since the war began, hitting $3.999 according to AAA. This drop was linked to easing crude oil costs and optimism regarding a potential peace deal. However, as of late August, prices have surpassed those levels again. AAA reported on Aug. 20 that despite declining seasonal demand, crude oil prices in the $80 per barrel range continue to push the national average higher due to instability in the Strait of Hormuz.
The economic impact of sustained high fuel prices has forced many American households to adjust their spending. As gas prices rise, consumers often pull back on core necessities such as groceries. Research from Dylan Brewer, an assistant professor in Georgia Tech’s School of Economics, suggests that short-term swings in gas costs lead to significant adjustments in driving and wider consumer spending patterns.
The geopolitical landscape continues to shift as the war continues. On Aug. 26, President Trump stated in a radio interview with Glenn Beck that the Strait of Hormuz remains functional despite occasional drone or rocket attacks. He also noted that he is "not in a hurry" for negotiations with Iran to resume. Meanwhile, Vice President JD Vance stated on Aug. 20 that the U.S. would enter a new phase of the war by ramping up economic pressure.
The ongoing conflict has also involved broader international tensions. In July, reports surfaced regarding potential Chinese involvement, with President Trump expressing disappointment toward Chinese leader Xi Jinping if China provided weapons to Iran. Specifically, reports indicated that Iran was expected to receive a shipment of 300-400 Chinese-made shoulder-fired air-defense missile launchers, valued between $60 million and $70 million.
