From Stansted Airport train to Tottenham Hale Underground Station, Tube to St Pancras Intl (Domestic), then train to Chatham. 1hrs 31min £39. From London Stansted bus to Stratford City Bus Station, bus to Poplar, Canada Square North (E14), then bus to Luton, Bank Street. 2hrs 51min £22. From London Stansted drive to Chatham. 57min £11.