From Aylesbury train to Baker Street Underground Station, Tube to London Liverpool Street, then train to Stansted Airport. 2 h 6 min £43. From Aylesbury, Bus Station (Bus Stn Bay 9) bus to Hemel Hempstead then bus to Stansted Airport London. 3 h 44 min £19. From Aylesbury drive to London Stansted Airport (STN). 1 h 6 min £12. From Aylesbury towncar to London Stansted Airport. 1 h 6 min £163.