Austin, United States → San Antonio, United States · ✈ 39 min · 🚗 1h 55min
64 nautical miles · Time difference: Same timezone · Direction: nearby
The distance from Austin to San Antonio is 118 km (73 miles). The fastest way to travel is by car. A direct flight takes approximately 39 min.
The straight-line distance from Austin, United States to San Antonio, United States is approximately 118 kilometers (73 miles or 64 nautical miles). This measurement uses the Haversine formula, computing the great-circle distance — the shortest path between two points on Earth's surface.
San Antonio is located nearby of Austin. Austin is in North America, in the South region of United States, while San Antonio is in North America, in South, United States. Both cities are in North America.
| Mode | Distance | Est. Time | Best For |
|---|---|---|---|
| ✈️ Flight | 118 km | ~39 min | Quick but may not save time with airport procedures |
| 🚗 Drive | ~153 km | ~1h 55min | Convenient and flexible |
| 🚂 Regular Train | ~142 km | ~1h 11min | Budget-friendly option |
Our recommendation: car is typically the best way to travel from Austin to San Antonio. At this distance, driving gives you the most flexibility and avoids airport overhead.
Based on an estimated road distance of 153 km, fuel costs for driving from Austin to San Antonio are approximately $12–$23 USD (at $0.08–$0.15 per km, depending on vehicle efficiency and local fuel prices). Additional costs may include tolls, parking, and accommodation for longer trips.
Austin sits at 30.2672°N, 97.7431°W, while San Antonio is located at 29.4241°N, 98.4936°W. The initial compass bearing from Austin to San Antonio is 218° (SW), so a great-circle flight path leaves Austin heading roughly SW. Because the Earth is curved, the actual heading shifts gradually along the route — pilots and navigation systems update it continuously instead of holding a single fixed compass bearing.
The latitude difference is 0.84° and the longitude difference is 0.75°. Each degree of latitude represents about 111 km, which is one reason cross-latitude routes feel longer even when the map looks similar to east–west journeys.
The geographic midpoint between Austin and San Antonio is approximately 29.8462°N, 98.1199°W. This is the great-circle halfway position — the spot where you would be exactly 59 km from each city. For road trips, a stop near this latitude/longitude makes for a natural overnight or lunch break.
Austin and San Antonio share the same approximate time zone, so meetings, calls, and arrivals don't require any clock adjustment. This makes the route especially convenient for short business trips. Daylight saving time can shift the offset by an hour during certain months, so confirm the exact difference for your specific travel dates.
Austin is a major city in United States with a population of approximately 978,908. Located in the South region, it is an important hub in North America. Despite its smaller size, Austin plays an important regional role in United States and attracts visitors year-round.
→ See all distances from Austin
San Antonio is a notable city in United States with a population of approximately 1,547,253. Situated in the South region, it serves as a key destination in North America. San Antonio offers solid transport connections and a variety of arrival options as a major city in United States.
118 km is roughly the distance of a short regional flight or a 3-4 hour drive. For comparison, it's about the distance from London to Paris (344 km). At this range, ground transport often competes with flying when you factor in airport time.
The distance from Austin to San Antonio (118 km) is roughly equivalent to 3 marathon distances laid end to end.
At just 118 km within United States, the Austin–San Antonio corridor is well-suited for a day trip or weekend getaway. Consider driving for flexibility, or check regional rail connections for a hassle-free journey.
The straight-line distance from Austin to San Antonio is approximately 118 kilometers (73 miles, 64 nautical miles).
A direct flight takes approximately 39 min, based on 800 km/h cruising speed plus 30 minutes for takeoff and landing.
Estimated driving time is approximately 1h 55min, based on 80 km/h average speed and roads being ~30% longer than straight-line distance.
San Antonio is approximately Same timezone compared to Austin.
The estimated road distance is approximately 153 km, which is about 30% longer than the 118 km straight-line distance.
📍 Data: Coordinates from OpenStreetMap contributors. Distances calculated using the Haversine formula. Travel times are estimates only. Last verified: May 30, 2026.