Flight Time from Casper to Longmont
The flight from Casper to Longmont covers about 197 mi and takes roughly 52 min nonstop. Flight duration estimate and fare guide.
Casper and Longmont are about 197 mi (317 km) apart in a straight line. By road that works out to roughly 240 mi (386 km), a drive of about 4 hr 18 min. A nonstop flight covers the great-circle distance in approximately 52 min.
| Straight-line distance | 197 mi / 317 km |
| Road distance (est.) | 240 mi / 386 km |
| Driving time (est.) | 4 hr 18 min |
| Nonstop flight (est.) | 52 min |
| Driving fuel (est., 1-way) | $30 |
| Typical flight fare | $80–$250 |
| Geographic midpoint | 41.518, -105.695 |
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
Casper to Longmont is about 197 mi (317 km) in a straight line, and roughly 240 mi (386 km) by road.