Great Northern operates a train from Baldock to Letchworth hourly. Tickets cost $5 - $8 and the journey takes 2 min. Alternatively, Arriva UK operates a bus from Baldock to Letchworth hourly. Tickets cost $5 - $7 and the journey takes 13 min. Richmonds Coaches also services this route hourly.
From Baldock train to Letchworth. 2 min £4. From Baldock, Market Place bus to Letchworth Railway Station West. 13 min £4. From Baldock taxi to Letchworth. 4 min £8. From Baldock walk to Letchworth. 37 min.