I-75 motorists heading out for the 2026 Labor Day weekend (September 5-7) can expect varying regular unleaded prices across the 1,786-mile corridor from Michigan to Florida. National averages hover near $4.10 per gallon as of September 1, but southern and midwestern stretches offer better deals. Fill up strategically to save on your holiday trip.
Prices generally drop heading south from Michigan into Tennessee and Georgia before rising slightly in Florida tourist areas. Data draws from the American Automobile Association (AAA) state and metro averages.
Average Gas Prices by Major City (North to South)
| City | Avg. Price/Gallon |
|---|---|
| Detroit, MI | $4.12 |
| Toledo, OH | $3.72 |
| Dayton, OH | $3.71 |
| Cincinnati, OH | $3.74 |
| Lexington, KY | $3.79 |
| Knoxville, TN | $3.61 |
| Atlanta, GA | $3.80 |
| Macon, GA | $3.85 |
| Tampa, FL | $3.94 |
| Miami, FL | $3.88 |
Tennessee and Ohio currently feature some of the route’s lowest prices, while Michigan leads higher. Expect possible holiday demand bumps.
Smart Fueling Tips for I-75 Travelers
Avoid pricey highway-adjacent stations; venture a mile or two off exits for 10-20 cent savings. Top off in Knoxville or Dayton before pricier Florida segments. With moderate prices overall, this Labor Day corridor trip remains affordable for most vehicles. Drive safely and enjoy the long weekend!
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