Flying
As the gateway to the Isle of Wight, Southampton is within easy reach of its own airport (15-20 minute by car) and there's excellent transport links with London Heathrow (LHR), London Gatwick (LGW) and Bournemouth Airport (BOH).
From Luton or Stansted Airports catch a train into London and make your way to London Waterloo station for services to Southampton Central.
BAA website