Where's cheapest gas in Florida? Here's how prices compare in state
AAA put the highest prices for gas in South Florida. Costs for a gallon of gas in Palm Beach County and Monroe County, which includes the Florida Keys, were $3.28 on Sunday with Miami-Dade at $3.16. The average cost of diesel in the state was $3.49, which is the same as a week ago but 51 cents lower than a year ago.