Gas prices in Arizona continue to fall. Triple-A Arizona says the average price of gas in the state is down a cent-and-a-half this week to $2.77 a gallon. In Flagstaff, gas prices are down three cents from last week to $2.70 a gallon on average. However, some stations are selling gas for $2.55 a gallon and lower. In Prescott, gas prices are down two-and-a-half cents from last week to $2.86 a gallon. Some stations in Prescott are selling gas for $2.84 and lower. Officials say prices continue to fall as we begin to wind down the winter season. It remains to be seen if the decline will continue when gas stations switch to summer blend gas.