Diesel Prices in Arizona Today
Average diesel price in Arizona: $6.445 per gallon on September 22, 2026. U.S. average $6.529. Updated daily.
What is the price of diesel in Arizona today?
Diesel in Arizona averages $6.445 per gallon today (September 22, 2026), $0.084 less than the U.S. average of $6.529. Arizona ranks #29 of 51 for cheapest diesel (1 = cheapest). A loaded semi at about 6.3 mpg spends about $1.02 per mile on fuel in Arizona.
per gallon today
U.S. average $6.529
of 51 (1 = cheapest)
semi truck, today
Fuel cost per mile in Arizona
Estimated diesel cost at today's Arizona price of $6.445 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 | $1.03 | $1,025 |
| Reefer38,000 lbs, ~6.0 mpg | $1.07 | $1,067 |
| Flatbed40,000 lbs, ~6.0 mpg | $1.07 | $1,066 |
| Hotshot12,000 lbs, ~8.9 mpg | $0.72 | $724 |
| Box Truck7,000 lbs, ~9.1 mpg | $0.71 | $706 |
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 Arizona today?
Diesel in Arizona averages $6.445 per gallon today (September 22, 2026), $0.084 less than the U.S. average of $6.529. Arizona ranks #29 of 51 for cheapest diesel (1 = cheapest). A loaded semi at about 6.3 mpg spends about $1.02 per mile on fuel in Arizona.
How much does it cost to fill a semi truck in Arizona?
At $6.45 a gallon, 150 gallons of diesel costs about $967 and 200 gallons about $1,289 in Arizona today.
Is diesel cheaper in Arizona than nearby states?
Among nearby states in the same region, the cheapest today is Alaska at $6.663 a gallon. Arizona is $6.445.
How often are Arizona diesel prices updated?
Every day. This page refreshes each morning from daily state averages, with the EIA weekly survey as a backup.
| Alaska | $6.663 |
| Nevada | $6.843 |
| Oregon | $6.872 |
| Hawaii | $7.136 |
| Washington | $7.463 |
Source: AAA daily state average, September 22, 2026. All 50 states
Running freight through Arizona?
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.