From St Albans City train to London St Pancras International LL, walk to King's Cross St. Pancras Underground Station, then Tube to Hounslow East Underground Station. 1 h 13 min £14. From St Albans, Town Hall line 724 bus to Uxbridge then line 222 bus to Hounslow, Treaty Centre. 2 h 12 min £7. From St Albans taxi to Hounslow. 35 min £130. From St Albans drive to Hounslow. 35 min £6.