Driving Time from Portsmouth to Southampton
Driving from Portsmouth to Southampton is about 22 mi and takes roughly 30 min. See the fuel-cost estimate, distance and route tips.
Portsmouth and Southampton are about 15 mi (25 km) apart in a straight line. By road that works out to roughly 22 mi (35 km), a drive of about 30 min. A nonstop flight covers the great-circle distance in approximately 32 min.
| Straight-line distance | 15 mi / 25 km |
| Road distance (est.) | 22 mi / 35 km |
| Driving time (est.) | 30 min |
| Nonstop flight (est.) | 32 min |
| Driving fuel (est., 1-way) | $3 |
| Typical flight fare | $80–$250 |
| Geographic midpoint | 50.852, -1.248 |
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
Portsmouth to Southampton is about 15 mi (25 km) in a straight line, and roughly 22 mi (35 km) by road.