The most practical way to travel from Antrim to Portsmouth is by flying from Belfast International Airport to Southampton Airport, followed by a 30-minute train ride to Portsmouth. The total journey time is approximately 2 hours. The total distance is about 520 km. Portsmouth is a historic naval city on the south coast.
Total Distance: 520 km straight-line air distance.
Trains run frequently between Southampton Airport and Portsmouth.
Summer for naval history festivals and harbor tours.