From Watford Junction train to Milton Keynes Central. 36 min £11. From Watford, High Street bus to Luton Station Interchange (Luton Railway Station) then line 99 bus to Central Milton Keynes, The Point (Central Milton Keynes The Point H4). 2 h 27 min £11. From Watford taxi to Milton Keynes. 39 min £158. From Watford drive to Milton Keynes. 39 min £7.