How Long Is the Drive from Las Vegas to San Antonio?
The drive from Las Vegas to San Antonio takes approximately 23h 11min, covering 1392 miles via I-15. Under normal conditions, expect to spend around $162 on gas.
Travel time can vary — during peak hours, weekends, or holidays, the journey may take 32–33+ hours. For the fastest trip, leave early morning (before 7 AM) or travel on weekday evenings.
Traffic Estimate
🟢 Light traffic
19h 42m
🔵 Typical
23h 11min
🔴 Heavy traffic
33h 37m
Traffic is usually worst during weekday rush hours (7–9 AM, 4–7 PM) and holiday weekends.
Trip Details
Distance1392 miles (2240 km)
Drive Time23h 11min
RouteI-15
Best TimeMid-morning (9-11 AM)
Fuel Costs
Gas (30 mpg)~46.4 gallons
Est. Cost$162
Route Tips: I-15
The Vegas highway. Friday/Sunday traffic between LA and Vegas can be extreme — plan accordingly.
You'll likely need 3 fuel stops along the way.
Best Time to Drive from Las Vegas to San Antonio
For a long drive like Las Vegas to San Antonio, 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:Mid-morning (9-11 AM)
🔴 Avoid:Rush hour (4-7 PM)
Driving vs Flying
🚗 Driving
23h 11min
~$162 gas
✈️ Flying
5h 17m
~$209–$487 flight
✈️ Flying is faster when you factor in airport time. Flight time is ~2h 47m but add ~2.5 hours for check-in, security, and boarding.
All Travel Options
🚗 Drive
23h 11min
~$162
🚌 Bus
30h 56m
~$111–$251
🚂 Train
25h 19m
~$167–$418
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:
📍 White Sands
📍 El Paso
📍 Carlsbad Caverns
Frequently Asked Questions
How long does it take to drive from Las Vegas to San Antonio?
The drive from Las Vegas to San Antonio takes approximately 23h 11min covering 1392 miles via I-15. Actual time may vary based on traffic, weather, and road conditions.
How much does gas cost for Las Vegas to San Antonio?
At 30 MPG and $3.50/gallon, expect to spend approximately $162 on gas for this 1392-mile trip. You'll need about 46.4 gallons of fuel.
What is the best time to drive from Las Vegas to San Antonio?
Mid-morning (9-11 AM) to avoid heavy traffic. Weekday mornings before 7 AM or evenings after 7 PM typically have less congestion.
Are there tolls on the Las Vegas to San Antonio route?
Yes, expect approximately $41 in tolls along this route. Consider getting a TxTag transponder for faster toll payment.
