Flight Time from Koch'ang to Sinan
The flight from Koch'ang to Sinan covers about 54 mi and takes roughly 36 min nonstop. Flight duration estimate and fare guide.
36 min
Nonstop flight
54 mi
Straight-line
70 mi
By road
36 min
Flight time
Koch'ang and Sinan are about 54 mi (86 km) apart in a straight line. By road that works out to roughly 70 mi (112 km), a drive of about 1 hr 36 min. A nonstop flight covers the great-circle distance in approximately 36 min.
| Straight-line distance | 54 mi / 86 km |
| Road distance (est.) | 70 mi / 112 km |
| Driving time (est.) | 1 hr 36 min |
| Nonstop flight (est.) | 36 min |
| Driving fuel (est., 1-way) | $9 |
| Typical flight fare | $80–$250 |
| Geographic midpoint | 35.130, 126.403 |
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
Koch'ang to Sinan is about 54 mi (86 km) in a straight line, and roughly 70 mi (112 km) by road.