Idaho Gas Prices
Average price per gallon in Idaho, updated 7/21/26 from AAA. Regular is currently $4.16/gal — $0.14 above the national average of $4.02.
Regular
$4.16
Mid-grade
$4.44
Premium
$4.72
Diesel
$4.98
Regular, change:▲ +$0.10 today▲ +$0.15 wk▼ $0.17 mo
Regular — recent trend (42 days)
Cheapest metros in Idaho
| Metro | Regular | Diesel |
|---|---|---|
| Coeur D'Alene | $4.04 | $4.95 |
| Lewiston | $4.05 | $4.92 |
| Franklin | $4.10 | $5.02 |
| Idaho Falls | $4.11 | $4.86 |
| Twin Falls | $4.14 | $4.97 |
| Pocatello | $4.15 | $4.91 |