PHOENIX (AP) -- Gasoline prices around Arizona are higher at the pump this week. Officials with Triple-A Arizona said Thursday that the average statewide price for unleaded regular gasoline is $3.27 a gallon. That's up by more than 3 cents from last week. This week's national average is at $3.38 per gallon, an increase of nearly 6 cents from last week. Tucson has Arizona's lowest average gasoline price at $3.16 a gallon and Flagstaff has the highest at $3.40. Montana has the lowest average gas prices in the continental U.S. at $3.11 a gallon with California having the highest at $3.74 a gallon.Find the best gas prices in your neighborhood.