Flight Time from Piedras Negras to San Antonio
The flight from Piedras Negras to San Antonio covers about 132 mi and takes roughly 45 min nonstop. Flight duration estimate and fare guide.
Piedras Negras and San Antonio are about 132 mi (213 km) apart in a straight line. By road that works out to roughly 172 mi (277 km), a drive of about 3 hr 5 min. A nonstop flight covers the great-circle distance in approximately 45 min.
| Straight-line distance | 132 mi / 213 km |
| Road distance (est.) | 172 mi / 277 km |
| Driving time (est.) | 3 hr 5 min |
| Nonstop flight (est.) | 45 min |
| Driving fuel (est., 1-way) | $22 |
| Typical flight fare | $80–$250 |
| Geographic midpoint | 29.066, -99.512 |
How these estimates work
Straight-line distance uses the haversine formula on each city's coordinates. Road distance applies a circuity factor (~1.2–1.4×) and driving time a blended average speed. Flight time uses typical jet cruise speed plus ~30 minutes for taxi, climb and descent. Treat all figures as planning estimates.
Frequently asked questions
Piedras Negras to San Antonio is about 132 mi (213 km) in a straight line, and roughly 172 mi (277 km) by road.