ational average price for a gallon of regular gasoline is $3.20 on Friday.. Gas prices are sitting at a four-year low ... The national average price for a gallon of regular gasoline was $3.20 on Friday .... Phil Flynn, energy market analyst and FOX Business contributor, credited the neutralization of Iran’s nuclear program for removing a significant amount of geopolitical risk from oil prices, noting that this "has shown up in the gas prices." Flynn also stated that the administration has created a more production-friendly environment, with Trump signaling to the market a shift toward more favorable regulations. He pointed...