Just under half the gas stations reviewed by GasBuddy are under the $3 per gallon mark on Monday, with the cheapest gas online in Virginia at $2.52 a gallon. “With the change to winter gasoline happening today at most stations across the country, the outlook is bright for the national average to continue to make a run at falling to $2.99 per gallon for the first time since 2021,” said Patrick De Haan, the head of petroleum analysis at GasBuddy.