The Heathrow Airport T4 branch operates between Acton Main Line* and Heathrow Airport T4.
*Trains originate from Abbey Wood or Shenfield.
Trains call at the following stations:
Acton Main Line
Ealing Broadway
West Ealing
Hanwell
Southall
Hayes & Harlington
Heathrow Airport T123
Heathrow Airport T4
Services are operated by MTR Elizabeth Line for Elizabeth Line.