Diesel Prices in Louisiana Today
Average diesel price in Louisiana: $6.027 per gallon on September 22, 2026. U.S. average $6.529. Updated daily.
What is the price of diesel in Louisiana today?
Diesel in Louisiana averages $6.027 per gallon today (September 22, 2026), $0.502 less than the U.S. average of $6.529. Louisiana ranks #2 of 51 for cheapest diesel (1 = cheapest). A loaded semi at about 6.3 mpg spends about $0.96 per mile on fuel in Louisiana.
per gallon today
U.S. average $6.529
of 51 (1 = cheapest)
semi truck, today
Fuel cost per mile in Louisiana
Estimated diesel cost at today's Louisiana price of $6.027 a gallon, using fuel economy calibrated to FHWA and NACFE data.
| Truck | Fuel per mile | Fuel per 1,000 miles |
|---|---|---|
| Dry Van38,000 lbs, ~6.3 mpg | $0.96 | $959 |
| Reefer38,000 lbs, ~6.0 mpg | $1.00 | $998 |
| Flatbed40,000 lbs, ~6.0 mpg | $1.00 | $996 |
| Hotshot12,000 lbs, ~8.9 mpg | $0.68 | $677 |
| Box Truck7,000 lbs, ~9.1 mpg | $0.66 | $661 |
Your numbers depend on load weight, speed, terrain and idling. Enter them in the truck fuel cost calculator for an exact estimate.
Frequently asked questions
What is the price of diesel in Louisiana today?
Diesel in Louisiana averages $6.027 per gallon today (September 22, 2026), $0.502 less than the U.S. average of $6.529. Louisiana ranks #2 of 51 for cheapest diesel (1 = cheapest). A loaded semi at about 6.3 mpg spends about $0.96 per mile on fuel in Louisiana.
How much does it cost to fill a semi truck in Louisiana?
At $6.03 a gallon, 150 gallons of diesel costs about $904 and 200 gallons about $1,205 in Louisiana today.
Is diesel cheaper in Louisiana than nearby states?
Among nearby states in the same region, the cheapest today is Texas at $5.965 a gallon. Louisiana is $6.027.
How often are Louisiana diesel prices updated?
Every day. This page refreshes each morning from daily state averages, with the EIA weekly survey as a backup.
| Texas | $5.965 |
| Mississippi | $6.058 |
| Alabama | $6.159 |
| Arkansas | $6.193 |
| New Mexico | $6.325 |
Source: AAA daily state average, September 22, 2026. All 50 states
Running freight through Louisiana?
Texas Solutions dispatches semis for 5%, hotshots for 8% and box trucks for 10% of weekly gross. We plan lanes to cut empty miles and fuel.