GasBuddy Forecasts Most Expensive Labor Day on Record at the Pump09/02/2026This year’s Labor Day weekend is expected to be most expensive at the gas pump on record, based on GasBuddy’s Labor Day gas price forecast. The national average is expected to be $4.03 per gallon. GasBuddy says prices remain volatile amid geopolitical tensions with the Strait of Hormuz and Ukraine and Russia. The disruptions could keep fuel prices elevated this fall, especially diesel prices. GasBuddy says the switch to winter gasoline and seasonal changes could bring some relief in the weeks ahead.