While a gallon of regular still exceeds $5 on average in sta...

While a gallon of regular still exceeds $5 on average in states such as Alaska, California, Hawaii, Oregon, and Nevada, there are 19 states where a gallon is offered for under $4. Again, that's according to AAA's list of state gas-price averages, which also lists eight states where drivers can fill up for an average of $3.77 or less. The cheapest of those is Texas, where regular is currently $3.69 per gallon on average.