Gas prices in Arizona leveled off some this week. Triple-A Arizona says the average price of gas was up over a half-cent to $2.29 a gallon. In Flagstaff, gas prices actually fell this week two cents to $2.38 a gallon. Some stations are selling gas for $2.23 a gallon and lower. In Prescott, gas prices were unchanged on average and stayed at $2.30 a gallon. Some stations are selling gas for $2.19 and lower. Officials say nationwide, prices are still going up as people return to work.