Distance from Southampton to London

The straight-line (great-circle) distance between Southampton and London is 111.1 kilometres, roughly 16 min by plane at 850 km/h. By road it is about 129 km via M4 and M3, which takes around 1 h 50 min of driving without stops. The map below shows both routes, and the calculator recomputes them for any other pair of places.

Straight line111.1 km
By road129 km
Driving time1 h 50 min
Flight time16 min

About this page

This page is for anyone planning a trip from Southampton to London, in the United Kingdom. The straight-line distance comes from the haversine formula (great-circle distance). The road distance and driving time are the fastest car route on the OpenStreetMap road network, computed with OSRM; the actual time depends on traffic, stops and the roads you choose. Tap "Calculate distance" in the calculator to redraw the route live.

Frequently asked questions

What is the distance from Southampton to London?
In a straight line it is 111.1 km. By road it is about 129 km, roughly 1 h 50 min of driving.
How long is the flight from Southampton to London?
Roughly 16 min: the distance at a cruising speed of 850 km/h plus about 8 minutes for take-off and landing.
How many kilometres by road between Southampton and London?
About 129 km on the fastest route via M4 and M3, which takes around 1 h 50 min by car. Tap "Calculate distance" in the calculator to see the route on the map.
How is this distance calculated?
The straight-line distance uses the haversine formula, which gives the shortest path between two points on the Earth's surface.