Missing Piccadilly route to Heathrow Terminal 4


Hello colleagues,

What is the correct way to retrieve the Piccadilly Route to Heathrow Terminal 4? I tried multiple ways, but unfortunately none of them worked.
The first endpoint I tried was: https://api.tfl.gov.uk/line/piccadilly/route/sequence/inbound?serviceTypes=Regular,Night. Unfortunately it doesn’t return any routes arriving at Terminal 4 (HR4), but only those to Terminal 5.
The second endpoint I tried was for the timetables/journeys and I tried multiple departures (Earl’s Court, Cockfosters, etc). https://api.tfl.gov.uk/line/piccadilly/timetable/940GZZLUECT?direction=inbound. Again no success…
Is there anything wrong with the data, or am I doing it in a wrong way?
Meanwhile, I noticed that the journey planner at the TfL website works fine and finds journeys to Terminal 4 with the Piccadilly Line.

Best regards,


Hi Mladen,

It’s not you, it’s the data that’s wrong. I’ve amended my post for the latest update in /Line/Route/Sequence with No stopPointSequences to reflect this.

Regards, Nick


Hi @nickp & @mladen
We had a new data built today.
Let me know if there is still wrong data.

Pamella Arnold
TSO Digital


Hi Colleagues,
As far as I can see today, the two services mentioned above still return the same results. I.e. no arriving Piccadilly trains at Heathrow Terminal 4.