The drive from San Diego to Tucson takes approximately 5h 30min, covering 400 miles via I-5. Under normal conditions, expect to spend around $46 on gas.
Travel time can vary — during peak hours, weekends, or holidays, the journey may take 7–8+ hours. For the fastest trip, leave early morning (before 7 AM) or travel on weekday evenings.
Traffic Estimate
🟢 Light traffic
4h 40m
🔵 Typical
5h 30min
🔴 Heavy traffic
7h 58m
Traffic is usually worst during weekday rush hours (7–9 AM, 4–7 PM) and holiday weekends.
Trip Details
Distance400 miles (643 km)
Drive Time5h 30min
RouteI-5
Best TimeLate evening (8-10 PM)
Fuel Costs
Gas (30 mpg)~13.3 gallons
Est. Cost$46
Route Tips: I-5
The main West Coast highway. Heavy traffic near LA, San Francisco, and Seattle. Scenic stretches through Oregon and Northern California.
This trip can typically be done on a single tank of gas.
Best Time to Drive from San Diego to Tucson
The best time to drive from San Diego to Tucson is late evening (8-10 pm). Weekday mornings before 7 AM or evenings after 7 PM typically have the lightest traffic. Avoid Friday afternoons and Sunday evenings when possible.
🟢 Best:Late evening (8-10 PM)
🔴 Avoid:Rush hour (4-7 PM)
Driving vs Flying
🚗 Driving
5h 30min
~$46 gas
✈️ Flying
3h 18m
~$80–$150 flight
✈️ Flying is faster when you factor in airport time. Flight time is ~48 min but add ~2.5 hours for check-in, security, and boarding.
All Travel Options
🚗 Drive
5h 30min
~$46
🚌 Bus
8h 53m
~$32–$72
🚂 Train
7h 16m
~$48–$120
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:
📍 Buckeye
📍 Goodyear
📍 Avondale
Frequently Asked Questions
How long does it take to drive from San Diego to Tucson?
The drive from San Diego to Tucson takes approximately 5h 30min covering 400 miles via I-5. Actual time may vary based on traffic, weather, and road conditions.
How much does gas cost for San Diego to Tucson?
At 30 MPG and $3.50/gallon, expect to spend approximately $46 on gas for this 400-mile trip. You'll need about 13.3 gallons of fuel.
What is the best time to drive from San Diego to Tucson?
Late evening (8-10 PM) to avoid heavy traffic. Weekday mornings before 7 AM or evenings after 7 PM typically have less congestion.
Are there tolls on the San Diego to Tucson route?
Yes, expect approximately $12 in tolls along this route. Consider getting a FasTrak transponder for faster toll payment.
