The average bus between Heathrow Terminal 4 and Harefield takes 54 min and the fastest bus takes 36 min. The bus runs at least 2 times per hour from Heathrow Terminal 4 to Harefield. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run every 30 minutes between Heathrow Terminal 4 and Harefield. The earliest departure is at 5:25 AM in the morning, and the last departure from Heathrow Terminal 4 is at 11:10 PM which arrives into Harefield at 11:51 PM. All services require a transfer at Heathrow Terminals 2 & 3 station and take an average of 54 min. The schedules shown below are for the next available departures.

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52 min • 1 changeWant to know about travelling from Heathrow Terminal 4 to Harefield? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Heathrow Terminal 4 to Harefield. However, there are services departing from Heathrow Central Bus Station and arriving at Harefield Library station via Belmont Road station. The journey, including transfers, takes approximately 54 min.
Heathrow Terminal 4 to Harefield bus services, operated by Metroline Travel, depart from Heathrow Central Bus Station.
Heathrow Terminal 4 to Harefield bus services, operated by Transport UK London Bus, arrive at Harefield Library station.
The distance between Heathrow Terminal 4 and Harefield is 16.4 km. The road distance is 23 km.
You can take a subway from Heathrow Terminal 4 station to Harefield Library via Heathrow Terminals 2 & 3 station, Heathrow Central Bus Station, Belmont Road, and Uxbridge Station in around 1h 2m.