From Broadstairs train to St Pancras International, walk to King's Cross St. Pancras Underground Station, then Tube to Covent Garden Underground Station. 1 h 33 min £41. From Broadstairs train to London Blackfriars. 1 h 58 min £34. From Broadstairs, Pierremont Hall (War Memorial) bus to Elephant & Castle then bus to Covent Garden, Southampton St Covent Garden. 3 h 14 min £13. From Broadstairs drive to Covent Garden. 1 h 33 min £16.