How Long Is the Drive from San Antonio to Phoenix?
The drive from San Antonio to Phoenix takes approximately 12h 0min, covering 850 miles via I-35. Under normal conditions, expect to spend around $99 on gas.
Travel time can vary — during peak hours, weekends, or holidays, the journey may take 17–18+ hours. For the fastest trip, leave early morning (before 7 AM) or travel on weekday evenings.
Traffic Estimate
🟢 Light traffic
10h 12m
🔵 Typical
12h 0min
🔴 Heavy traffic
17h 24m
Traffic is usually worst during weekday rush hours (7–9 AM, 4–7 PM) and holiday weekends.
Trip Details
Distance850 miles (1367 km)
Drive Time12h 0min
RouteI-35
Best TimeEarly morning (6-8 AM)
Fuel Costs
Gas (30 mpg)~28.3 gallons
Est. Cost$99
Route Tips: I-35
Runs through the heartland from Texas to Minnesota. Watch for construction zones in urban areas.
You'll likely need 1 fuel stop along the way.
Best Time to Drive from San Antonio to Phoenix
For a long drive like San Antonio to Phoenix, plan to depart early in the morning. This lets you cover most of the distance before afternoon traffic builds up. Consider breaking the trip with a lunch stop midway.
🟢 Best:Early morning (6-8 AM)
🔴 Avoid:Rush hour (4-7 PM)
Driving vs Flying
🚗 Driving
12h 0min
~$99 gas
✈️ Flying
4h 12m
~$128–$298 flight
✈️ Flying is faster when you factor in airport time. Flight time is ~1h 42m but add ~2.5 hours for check-in, security, and boarding.
All Travel Options
🚗 Drive
12h 0min
~$99
🚌 Bus
18h 53m
~$68–$153
🚂 Train
15h 27m
~$102–$255
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:
📍 Carlsbad Caverns
📍 El Paso
📍 White Sands
Frequently Asked Questions
How long does it take to drive from San Antonio to Phoenix?
The drive from San Antonio to Phoenix takes approximately 12h 0min covering 850 miles via I-35. Actual time may vary based on traffic, weather, and road conditions.
How much does gas cost for San Antonio to Phoenix?
At 30 MPG and $3.50/gallon, expect to spend approximately $99 on gas for this 850-mile trip. You'll need about 28.3 gallons of fuel.
What is the best time to drive from San Antonio to Phoenix?
Early morning (6-8 AM) to avoid heavy traffic. Weekday mornings before 7 AM or evenings after 7 PM typically have less congestion.
Are there tolls on the San Antonio to Phoenix route?
Yes, expect approximately $25 in tolls along this route. Consider getting a TxTag transponder for faster toll payment.
