Diesel Prices in Connecticut Today
Average diesel price in Connecticut: $6.474 per gallon on September 22, 2026. U.S. average $6.529. Updated daily.
What is the price of diesel in Connecticut today?
Diesel in Connecticut averages $6.474 per gallon today (September 22, 2026), $0.055 less than the U.S. average of $6.529. Connecticut ranks #33 of 51 for cheapest diesel (1 = cheapest). A loaded semi at about 6.3 mpg spends about $1.03 per mile on fuel in Connecticut.
per gallon today
U.S. average $6.529
of 51 (1 = cheapest)
semi truck, today
Fuel cost per mile in Connecticut
Estimated diesel cost at today's Connecticut price of $6.474 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 | $1,030 |
| Reefer38,000 lbs, ~6.0 mpg | $1.07 | $1,072 |
| Flatbed40,000 lbs, ~6.0 mpg | $1.07 | $1,070 |
| Hotshot12,000 lbs, ~8.9 mpg | $0.73 | $727 |
| Box Truck7,000 lbs, ~9.1 mpg | $0.71 | $710 |
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 Connecticut today?
Diesel in Connecticut averages $6.474 per gallon today (September 22, 2026), $0.055 less than the U.S. average of $6.529. Connecticut ranks #33 of 51 for cheapest diesel (1 = cheapest). A loaded semi at about 6.3 mpg spends about $1.03 per mile on fuel in Connecticut.
How much does it cost to fill a semi truck in Connecticut?
At $6.47 a gallon, 150 gallons of diesel costs about $971 and 200 gallons about $1,295 in Connecticut today.
Is diesel cheaper in Connecticut than nearby states?
Among nearby states in the same region, the cheapest today is Rhode Island at $6.355 a gallon. Connecticut is $6.474.
How often are Connecticut diesel prices updated?
Every day. This page refreshes each morning from daily state averages, with the EIA weekly survey as a backup.
| Rhode Island | $6.355 |
| Massachusetts | $6.390 |
| New Hampshire | $6.406 |
| Vermont | $6.459 |
| Maine | $6.516 |
Source: AAA daily state average, September 22, 2026. All 50 states
Running freight through Connecticut?
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.