BOISE, Idaho – The average gas price in Boise has risen in the last week, by roughly 3 cents, marking a new average price of $2.87 per gallon. According to GasBuddy, who surveys 216 stations in Boise, prices in Boise are roughly 21 cents per gallon lower than a month ago and 92 cents per gallon less than a year ago. The cheapest station in Boise was priced at $2.71 per gallon on Sunday, while the most expensive station comes in at $2.93 per gallon, a difference of 22 cents per gallon.