Distance from Decatur to Lafayette
How far is it from Decatur to Lafayette? About 687 mi in a straight line and 810 mi by road. Driving time, flight time, midpoint and route details.
Decatur and Lafayette are about 687 mi (1,105 km) apart in a straight line. By road that works out to roughly 810 mi (1,304 km), a drive of about 13 hr 43 min. A nonstop flight covers the great-circle distance in approximately 1 hr 46 min.
| Straight-line distance | 687 mi / 1,105 km |
| Road distance (est.) | 810 mi / 1,304 km |
| Driving time (est.) | 13 hr 43 min |
| Nonstop flight (est.) | 1 hr 46 min |
| Driving fuel (est., 1-way) | $101 |
| Typical flight fare | $80–$250 |
| Geographic midpoint | 35.042, -90.578 |
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
Decatur to Lafayette is about 687 mi (1,105 km) in a straight line, and roughly 810 mi (1,304 km) by road.