The average train between Hertford and Heathrow Terminal 4 takes 1h 46m and the fastest train takes 1h 39m. The train runs at least 2 times per hour from Hertford to Heathrow Terminal 4. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run every 30 minutes between Hertford and Heathrow Terminal 4. The earliest departure is at 4:36 AM at night, and the last departure from Hertford is at 9:46 PM which arrives into Heathrow Terminal 4 at 11:29 PM. All services require a transfer at Finsbury Park and take an average of 1h 46m. The schedules shown below are for the next available departures.

2h 3m • 1 change

1h 53m • 1 change

1h 48m • 1 change

1h 42m • 1 change
Want to know about travelling from Hertford to Heathrow Terminal 4? 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 train from Hertford to Heathrow Terminal 4. However, there are services departing from Hertford station and arriving at Heathrow Terminal 4 station via Finsbury Park. The journey, including transfers, takes approximately 1h 46m.
Hertford to Heathrow Terminal 4 train services, operated by Great Northern, depart from Hertford North station.
Hertford to Heathrow Terminal 4 train services, operated by Great Northern, arrive at Heathrow Terminal 4 station.
Book your Hertford to Heathrow Terminal 4 train tickets online with Great Northern and London Underground (Tube).
The distance between Hertford and Heathrow Terminal 4 is 45.3 km. The road distance is 60 km.
You can take a train from Hertford East to Heathrow Terminal 4 via London Liverpool Street and Liverpool Street Station in around 1h 51m.