Flight Time from Gaithersburg to Philadelphia
The flight from Gaithersburg to Philadelphia covers about 122 mi and takes roughly 43 min nonstop. Flight duration estimate and fare guide.
Gaithersburg and Philadelphia are about 122 mi (196 km) apart in a straight line. By road that works out to roughly 159 mi (255 km), a drive of about 2 hr 50 min. A nonstop flight covers the great-circle distance in approximately 43 min.
| Straight-line distance | 122 mi / 196 km |
| Road distance (est.) | 159 mi / 255 km |
| Driving time (est.) | 2 hr 50 min |
| Nonstop flight (est.) | 43 min |
| Driving fuel (est., 1-way) | $20 |
| Typical flight fare | $80–$250 |
| Geographic midpoint | 39.552, -76.189 |
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
Gaithersburg to Philadelphia is about 122 mi (196 km) in a straight line, and roughly 159 mi (255 km) by road.