From Southampton Central train to Waterloo Underground Station, Tube to St Pancras International, then train to Canterbury West. 3hrs 01min £59. From Southampton City Centre, Coach Station bus to Belgravia, Victoria Coach Station then bus to Canterbury, Bus Station. 4hrs 53min £21. From Southampton City Centre, Coach Station bus to Gatwick Airport London then bus to Canterbury. 6hrs 15min £105. From Southampton drive to Canterbury. 2hrs 18min £32.