 A gallon at the pump is running about $3.49, according to AAA. California, the highest average price is at $4.79. Mississippi, the cheapest, they're sitting at about $2.94. And what a travel week this will be. Fourth of July doesn't fall until the middle of next week, but the summer holiday travel is already red hot. According to AAA, nearly 71 million Americans are expected to travel over the next week.