From Stansted Airport train to Tottenham Hale Underground Station, Tube to London Euston, then train to Watford Junction. 1hrs 08min £36. From Stansted Airport London bus to Hatfield, The Galleria then bus to Watford Junction Railway Station. 2hrs 05min £11. From Stansted Airport, Coach Station bus to Harlow Town Centre, Bus Station (Harlow Bus Stn) then line 724 bus to Watford, Town Hall. 3hrs 38min £15. From London Stansted Airport (STN) taxi to Watford. 49min £200. From London Stansted Airport (STN) drive to Watford. 49min £11.