Average Cost Per Gallon Of Gas In 2024 In The Us. Us gas prices per gallon have wavered between a national average of $1.84 and $4.99 since 2018. Gasoline, unleaded regular (cost per gallon/3.785 liters) in u.s.

Us gas prices per gallon have wavered between a national average of $1.84 and $4.99 since 2018. Gasoline prices to average around $3.40 per gallon (gal) in 2024 and $3.20/gal in 2025, compared with an average of more than $3.50/gal in 2023,” the eia’s.