Gas prices are still heading lower across Arizona. Triple-A Arizona says gas prices fell two-and-a-half cents from last week to $2.44 a gallon. In Flagstaff, gas fell nearly three-cents a gallon to $2.62 a gallon. However, some stations are selling gas for $2.49 and lower. In Prescott, gas is down over two cents a gallon to $2.73. Even with the drop, Prescott remains the home for the most expensive gas in the state. However, some stations are selling gas for $2.59 and lower. Officials say winter weather has played a key role to keeping prices at the pump low this winter. The drop in demand has kept the price at the pump heading lower over the past month.