Flight Time from Dadonghai to Haikou
The flight from Dadonghai to Haikou covers about 137 mi and takes roughly 45 min nonstop. Flight duration estimate and fare guide.
Dadonghai and Haikou are about 137 mi (221 km) apart in a straight line. By road that works out to roughly 178 mi (287 km), a drive of about 3 hr 11 min. A nonstop flight covers the great-circle distance in approximately 45 min.
| Straight-line distance | 137 mi / 221 km |
| Road distance (est.) | 178 mi / 287 km |
| Driving time (est.) | 3 hr 11 min |
| Nonstop flight (est.) | 45 min |
| Driving fuel (est., 1-way) | $22 |
| Typical flight fare | $80–$250 |
| Geographic midpoint | 19.134, 109.924 |
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
Dadonghai to Haikou is about 137 mi (221 km) in a straight line, and roughly 178 mi (287 km) by road.