Flight Time from Hanoi to Lạng Sơn
The flight from Hanoi to Lạng Sơn covers about 82 mi and takes roughly 39 min nonstop. Flight duration estimate and fare guide.
Hanoi and Lạng Sơn are about 82 mi (132 km) apart in a straight line. By road that works out to roughly 107 mi (172 km), a drive of about 1 hr 55 min. A nonstop flight covers the great-circle distance in approximately 39 min.
| Straight-line distance | 82 mi / 132 km |
| Road distance (est.) | 107 mi / 172 km |
| Driving time (est.) | 1 hr 55 min |
| Nonstop flight (est.) | 39 min |
| Driving fuel (est., 1-way) | $13 |
| Typical flight fare | $80–$250 |
| Geographic midpoint | 21.439, 106.300 |
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
Hanoi to Lạng Sơn is about 82 mi (132 km) in a straight line, and roughly 107 mi (172 km) by road.