From Heathrow Terminals 1-3 train to London Paddington, walk to Lancaster Gate Underground Station, Tube to London Liverpool Street, then train to Harlow Town. 1 h 16 min £44. From Heathrow Central Bus Station bus to Harlow, Allende Avenue. 3 h 13 min £13. From London Heathrow Airport (LHR) drive to Harlow. 52 min £9. From London Heathrow Airport towncar to Harlow. 52 min £130.