From Stansted Airport train to Liverpool Street Underground Station, Tube to London Marylebone, then train to Warwick. 2 h 51 min £74. From Stansted Airport, Coach Station bus to Coventry, Transport Museum then bus to Warwick Castle. 4 h 21 min £29. From London Stansted Airport (STN) drive to Warwick. 1 h 58 min £23. From London Stansted Airport towncar to Warwick. 1 h 58 min £247.