Gas prices in Arizona have started to go down for the first time in weeks. Triple-A Arizona says the average price of gas fell over a cent from last week to $3.15 a gallon. In Flagstaff, gas prices stayed pretty much even from last week, staying at $3.27 a gallon. Some stations in Flagstaff are selling gas for $3.09 a gallon and lower. In Prescott, gas prices also stayed pretty even from last week at $3.25 a gallon. Some stations are selling gas for $3.02 and lower. Triple-A says a dramatic drop in demand caused prices to level off and even lower in some areas of the country.