Gas price remain unchanged from last week in Arizona. Triple-A Arizona says the average price of gas in the state remains at $2.78 a gallon. In Flagstaff, gas prices are down two cents a gallon from last week to $2.94 a gallon on average. However, stations are selling gas for $2.71 and lower. In Prescott, gas prices are down nearly two cents a gallon to $2.98 a gallon. Some stations are selling gas for $2.85 and lower. Officials say demand for gas remains very high so prices at the pump should be unchanged or just a little lower for at least the next couple of weeks.