Flight Time from Memphis to O'Fallon
The flight from Memphis to O'Fallon covers about 255 mi and takes roughly 58 min nonstop. Flight duration estimate and fare guide.
Memphis and O'Fallon are about 255 mi (411 km) apart in a straight line. By road that works out to roughly 312 mi (502 km), a drive of about 5 hr 34 min. A nonstop flight covers the great-circle distance in approximately 58 min.
| Straight-line distance | 255 mi / 411 km |
| Road distance (est.) | 312 mi / 502 km |
| Driving time (est.) | 5 hr 34 min |
| Nonstop flight (est.) | 58 min |
| Driving fuel (est., 1-way) | $39 |
| Typical flight fare | $80–$250 |
| Geographic midpoint | 36.980, -90.367 |
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
Memphis to O'Fallon is about 255 mi (411 km) in a straight line, and roughly 312 mi (502 km) by road.