From Heathrow Airport
Local bus:
(140) to Harrow Bus Station.
By Underground:
Piccadilly Line via Rayners Lane.
From Gatwick Airport
By Train:
Gatwick Express to Victoria then by Underground to Harrow-on-the-Hill Tube Station (Metropolitan Line).
From Luton Airport
By Train:
Take the intercity to St Pancras then the Underground (Metropolitan Line to Harrow-on-the-Hill station).
From Stansted
By Train:
Take the fast train to Liverpool Street then the Metropolitan Line to Harrow-on-the-Hill station.