Dallas, United States → San Antonio, United States · ✈ 1h · 🚗 6h 36min
219 nautical miles · Time difference: -1h behind · Direction: south
The distance from Dallas to San Antonio is 406 km (252 miles). The fastest way to travel is by flight. A direct flight takes approximately 1h.
The straight-line distance from Dallas, United States to San Antonio, United States is approximately 406 kilometers (252 miles or 219 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 south of Dallas. Dallas 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 | 406 km | ~1h | Quick but may not save time with airport procedures |
| 🚗 Drive | ~528 km | ~6h 36min | Feasible with breaks |
| 🚂 Regular Train | ~487 km | ~4h 4min | Budget-friendly option |
Our recommendation: flight is typically the best way to travel from Dallas to San Antonio. At this distance, driving gives you the most flexibility and avoids airport overhead.
Based on an estimated road distance of 528 km, fuel costs for driving from Dallas to San Antonio are approximately $42–$79 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.
Dallas is a major city in United States with a population of approximately 1,343,573. Located in the South region, it is an important hub in North America. Dallas is a significant metropolitan area in United States with good domestic and international transport connections.
→ See all distances from Dallas
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.
406 km is a medium-distance route, similar to traveling across a mid-sized European country. A flight covers this distance quickly, but driving or rail travel remains feasible for those who prefer ground transport. For reference, New York to Chicago is about 1,150 km.
At 406 km, the Dallas-San Antonio route is about 1.0% of Earth's circumference. A commercial jet covers this distance in about 1h.
At just 406 km within United States, the Dallas–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 Dallas to San Antonio is approximately 406 kilometers (252 miles, 219 nautical miles).
A direct flight takes approximately 1h, based on 800 km/h cruising speed plus 30 minutes for takeoff and landing.
Estimated driving time is approximately 6h 36min, based on 80 km/h average speed and roads being ~30% longer than straight-line distance.
San Antonio is approximately -1h behind compared to Dallas.
The estimated road distance is approximately 528 km, which is about 30% longer than the 406 km straight-line distance.
📍 Data: Coordinates from OpenStreetMap contributors. Distances calculated using the Haversine formula. Travel times are estimates only. Last verified: April 7, 2026.