Data from AAA revealed that Missouri gas prices over the Independence Day holiday are the most expensive since 2014. The gas price average is $2.81 a gallon for regular unleaded, which is four cents more compared to the week before and 93 cents more per gallon than the same day last year. In Cape Girardeau, gas was an average of $2.75 the week of July 1, compared to $2.71 the week before and $1.93 a year before. Officials say the national average price for a gallon of regular unleaded is $3.12. Travel forecast data from AAA showed a total of 791,516 Missourians are expected to travel during the Independence Day weekend.