The drive from Atlanta to Knoxville takes approximately 3h 15min, covering 215 miles via I-85. Under normal conditions, expect to spend around $25 on gas.
Travel time can vary — during peak hours, weekends, or holidays, the journey may take 4–5+ hours. For the fastest trip, leave early morning (before 7 AM) or travel on weekday evenings.
Traffic Estimate
🟢 Light traffic
2h 46m
🔵 Typical
3h 15min
🔴 Heavy traffic
4h 43m
Traffic is usually worst during weekday rush hours (7–9 AM, 4–7 PM) and holiday weekends.
Trip Details
Distance215 miles (346 km)
Drive Time3h 15min
RouteI-85
Best TimeWeekday mid-day
Fuel Costs
Gas (30 mpg)~7.2 gallons
Est. Cost$25
Route Tips: I-85
Connects the Southeast. Heavy traffic around Atlanta is common during rush hours.
This trip can typically be done on a single tank of gas.
Best Time to Drive from Atlanta to Knoxville
The best time to drive from Atlanta to Knoxville is weekday mid-day. Weekday mornings before 7 AM or evenings after 7 PM typically have the lightest traffic. Avoid Friday afternoons and Sunday evenings when possible.
🟢 Best:Weekday mid-day
🔴 Avoid:Rush hour (4-7 PM)
Driving vs Flying
🚗 Driving
3h 15min
~$25 gas
✈️ Flying
2h 56m
~$80–$150 flight
✈️ Flying is faster when you factor in airport time. Flight time is ~26 min but add ~2.5 hours for check-in, security, and boarding.
All Travel Options
🚗 Drive
3h 15min
~$25
🚌 Bus
4h 47m
~$17–$39
🚂 Train
3h 55m
~$26–$64
Estimated times and prices. Bus/train availability varies by route. Driving gives the most flexibility for stops and schedules.
Suggested Stops
Popular cities along the route for rest, food, or fuel:
📍 Chattanooga
Frequently Asked Questions
How long does it take to drive from Atlanta to Knoxville?
The drive from Atlanta to Knoxville takes approximately 3h 15min covering 215 miles via I-85. Actual time may vary based on traffic, weather, and road conditions.
How much does gas cost for Atlanta to Knoxville?
At 30 MPG and $3.50/gallon, expect to spend approximately $25 on gas for this 215-mile trip. You'll need about 7.2 gallons of fuel.
What is the best time to drive from Atlanta to Knoxville?
Weekday mid-day to avoid heavy traffic. Weekday mornings before 7 AM or evenings after 7 PM typically have less congestion.
Are there tolls on the Atlanta to Knoxville route?
There may be minor tolls (around $6) on parts of this route. Some sections have toll-free alternatives.
