Gasoline prices around Arizona are slightly higher at the pump this week. Officials with AAA Arizona said Thursday that the average statewide price for unleaded regular gasoline is $3.21 a gallon. That is an increase of more than two-cents from last week. This week's national average is at $3.30 per gallon, down by almost two-cents from last week. Tucson has Arizona's lowest average gasoline price at $3.12 a gallon and Flagstaff has the highest at $3.33. Montana has the lowest average gas prices in the continental U.S. at $3.02 a gallon with Connecticut having the highest at $3.70 a gallon.