Melissa, Texas — Gas prices in the Dallas area averaged $3.9820 per gallon for regular unleaded on September 18, 2026, according to AAA, up from $3.9493 yesterday. That is up from $3.8833 a week ago but higher than $3.7260 a month ago.
The statewide average in Texas stands at $3.9532, while the national average is $4.4687. Drivers in the Dallas area are paying above the state average and below the national average.




