Rising Gas Prices in Chicago Linked to Escalating Iran-Israel Conflict
Chicago residents are already experiencing the economic impact of the ongoing conflict between Iran, Israel and the United States as gas prices continue to climb. The situation, which escalated with attacks beginning on February 28, 2026, has disrupted global oil markets and is being felt at the pump across the country.
Current Gas Prices in Chicago and Cook County
As of Monday, March 18, 2026, the average gas price in Chicago is approximately $4.08 per gallon, while prices across Cook County average $3.89, according to AAA. This represents a 70-cent increase per gallon in Chicago over the past month and a 47-cent increase compared to the same period last year. Nationally, gas prices have risen by 80 cents in the last month, reaching an average of $3.72 – the highest price since October 7, 2023, and 74 cents higher than prices before the recent escalation of conflict with Iran, as reported by CNN.
The Strait of Hormuz and Global Oil Supply
A significant factor driving up prices is the closure of the Strait of Hormuz by Iran on March 2, 2026. This narrow waterway, connecting the Persian Gulf to the Arabian Sea, is critical for global oil transportation, with approximately one-fifth of the world’s oil supply passing through it. Hundreds of international oil tankers have been targeted by Iranian missiles since the conflict began, further disrupting supply chains Council on Foreign Relations.
Impact on Chicago Commuters
The price surge is already altering commuting patterns in Chicago. Nick Chun, a Chicago resident who commutes between Irving Park and Lincoln Park for work and travels to Gary, Indiana, for an internship, is adjusting his refueling habits. “Prices are damn near $4 near where I live in Irving Park,” Chun said. “I already would try to fill up my tank in Indiana as much as possible. It’s gone up there, too. I’ve honestly been filling up in increments to save money.” Gas prices in Indiana are currently 60 cents cheaper than in Chicago, at $3.20 compared to Chicago’s $3.80.
Andrew Sinnot, who commutes 60 miles daily from Lakeview to his job in Itasca, is facing increased weekly fuel costs, estimated to be around $20 more than before the conflict. “I could fill up a tank for maybe $30-35 before,” Sinnot said. “Now it’s up to nearly $45 … I’m fortunate enough that I can still afford this, but I don’t really have a choice because I work all the way out there. But I’ve tried to drive less outside of that, because I live in a walkable city, but I do tend to fall into comfortability sometimes.”
Historical Context and Expert Analysis
The current oil price spike is the largest seen in the United States since the 1970s, according to Ryan Kellogg, Faculty Director for the University of Chicago’s Climate and Energy Policy program Block Club Chicago. “In terms of abruptness and magnitude, this is certainly the biggest crude oil price shock we’ve had in a generation,” Kellogg stated. The price of Brent crude, the global benchmark for oil, remains above $100 a barrel The New York Times.
US Oil Production and Potential Mitigation
Despite the price increases, the United States remains the world’s largest oil producer and has a more service-oriented economy than one reliant on commodities, potentially allowing it to absorb some of the economic impact. However, East Asia’s dependence on oil from Gulf states means that price increases are likely to continue in the U.S. Due to the interconnectedness of the global market. Kellogg suggests that domestic drilling operations may increase, but cautiously, given the uncertainty surrounding the conflict’s duration.
Broader Economic Impacts
Beyond gasoline, the conflict is expected to drive up prices for other petroleum-based products, including plastics. Fertilizers produced in the Gulf region will also become more expensive, according to Kellogg.