As Arizona residents drive into the holiday travel season, a new SmartAsset study shows gas prices in the state have seen one of the steepest increases in the U.S., growing 4.2% year over year. Among the study’s key findings:
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- Arizona ranks No. 5 for the overall increase in the average price per gallon of gas.
- The average price of gasoline in Arizona now sits at $3.35 per gallon.
- In Colorado, by contrast, gas prices dropped 8.7%, the sharpest decline nationwide.
SmartAsset ranked 50 states based on the one-year change in gas prices as of November 25th 2025, as well as the current average statewide price for a regular gallon.
Key Findings
- Gas is up 7.6% year over year in Oregon. Oregon’s gas prices increased most over the past year, with a regular gallon going from $3.55 last Thanksgiving to $3.82 this week. Alaska had a similarly high annual increase in gas prices, jumping 7.1% from $3.48 to $3.72. Idaho ranked third with a 5.7% increase to $3.27 per gallon.
- In Colorado, gas prices dropped 8.7%. Gas prices declined most in Colorado. Last year, a regular gallon averaged $2.90, compared to $2.65 today. Wyoming had the second largest decline at 5.0%, followed by Wisconsin at 4.4%. In total, gas prices dropped in 28 states this year.
- Gas is only $2.50 per gallon in Oklahoma. Oklahoma boasts the lowest average gas prices this Thanksgiving. Mississippi has the second lowest average gas price currently at $2.60. Louisiana ($2.62), Arkansas ($2.64) and Colorado ($2.65) also claim some of the lowest gas prices this week.
- Californians are paying most for gas. The price of a regular gallon now averages $4.59 in California. This is after a 3.3% increase from a year ago, putting California in sixth largest price increase. Hawaii has the second-most expensive gas at $4.44 per regular gallon, followed by Washington at $4.19.
