The Iran war has pushed up gasoline prices across the United States, adding to the cost of driving. October could become the most expensive month ever for gasoline prices for this time of year, according to AAA. The rising cost of fuel has affected drivers nationwide, though the prices differ from state to state. Gas prices in the United States, up by more than 40% since the US and Israel launched the war, have soared as the global oil supply constricts, reports NBC News. If we look at the national average, then the gas prices are more than $4 per gallon, according to data from motor club AAA. The increase in gas prices in US is straining already-stretched budgets in households across the country.