How do you get from Heathrow Airport to South Hampton to catch a crusie ship?
Heathrow Airport is about 65 miles (105 KM) from Southampton
cruise port.
The cheapest option is to travel by the national express coach.
Then you need a taxi from the Southampton bus station to the cruise
port.
Other option is Southampton cruise bus shuttle, which will pick
you up from hotels in Heathrow, unfortunately it doesn't pick up
from passenger terminals.
There is also a train connection, but it does not have a direct
connection, hence you have to use the RailAir shuttle to connect
with the train service at Wapping, which is about 15 mile away from
Heathrow airport..
Another option is to hire Private hire vehicles, which can pick
you from passenger terminals and drop you off at the port hassle
free.