Which service will you likely use?
An uberX car can pick you up in ~4 min.
Distance between Southampton and Heathrow Airport is approx. 66.82 miles (107.54 km) with 78 min travel time.
This Uber estimate from Southampton to Heathrow Airport
5 hours ago.
Update the estimate to see the real-time airport transfer fare to Heathrow Airport with Uber in Southampton.