Gas prices are up across Arizona as we head into the Memorial Day Weekend. Triple-A Arizona says the average price of gas is up just over two-cents a gallon to $2.10. In Flagstaff, prices at the pump jumped nearly three-cents a gallon this week to $2.28 a gallon. Some stations are selling gas at $2.23 and lower. In Prescott, gas prices actually fell nearly four cents a gallon to $2.14. Stations are selling gas for $1.99 a gallon and lower. Officials say prices are expected to go up as more people start physically heading back to their places of work.