It is the only station on the Uxbridge branch to be served exclusively by the Metropolitan.

The Metropolitan (Harrow and Uxbridge Railway) line passed through here between Harrow-on-the-Hill and Ruislip, with services beginning on 4 July 1904.

West Harrow station opened on 17 November 1913.

The station is one of the few underground stations without ticket barriers at one of the entrances, with passengers travelling towards Uxbridge able to access the platforms without passing a ticket barrier.

The off-peak service in trains per hour (tph) is:[6] The morning peak service in trains per hour (tph) is:[6] The evening peak service in trains per hour (tph) is:[6]