Great Northern operates a train from Stevenage to Aylesbury every 30 minutes. Tickets cost $14 - $20 and the journey takes 25 min. 2 other operators also service this route. Alternatively, Arriva UK operates a bus from Stevenage to Aylesbury every 15 minutes. Tickets cost $6 - $9 and the journey takes 1 h 56 min. 2 other operators also service this route.
From Stevenage train to King's Cross St. Pancras Underground Station, Tube to London Marylebone, then train to Aylesbury. 1 h 42 min £36. From Stevenage, Bus Station bus to Hemel Hempstead, Marlowes then bus to Aylesbury, Bus Station (Aylesbury Bus Station). 3 h 4 min £6. From Stevenage taxi to Aylesbury. 46 min £136. From Stevenage drive to Aylesbury. 46 min £8.