482
Usually an Alexander Dennis Adl Enviro 400 Mmc.

80% on timeof departures in the week ending 17 October 2026, leaving no more than 2.5 minutes early or 5 minutes late. Half of London's timetabled routes managed 73% or better.

The last week, day by day
Share of departures leaving on time.
The weekly figures

The share of departures that left on time.

Week endingHeathrow Terminal 5
21 Jun 2025no data
28 Jun 202569%
5 Jul 202573% thin
12 Jul 202575% thin
19 Jul 202570%
26 Jul 202582%
2 Aug 202578%
9 Aug 202572%
16 Aug 202581%
23 Aug 202573%
30 Aug 202577%
6 Sept 202565%
13 Sept 202566%
20 Sept 202584%
27 Sept 202584%
4 Oct 202576%
11 Oct 202586%
18 Oct 202575%
25 Oct 202587%
1 Nov 202584%
8 Nov 202577%
15 Nov 202583% thin
22 Nov 202585% thin
29 Nov 202578%
6 Dec 202568%
13 Dec 202589%
20 Dec 202581%
27 Dec 202584% thin
3 Jan 202692%
10 Jan 202689%
17 Jan 202685%
24 Jan 202688%
31 Jan 202666%
7 Feb 202682%
14 Feb 202683%
21 Feb 2026no data
28 Feb 2026no data
7 Mar 202686%
14 Mar 202682%
21 Mar 202683%
28 Mar 202684%
4 Apr 202687%
11 Apr 202690%
18 Apr 202682%
25 Apr 202672% thin
2 May 202676%
9 May 202681%
16 May 202687%
23 May 202675%
30 May 202686%
6 Jun 202671%
13 Jun 202678%
20 Jun 202674%
27 Jun 202657%
4 Jul 2026no data
11 Jul 202678%
18 Jul 202684%
25 Jul 202685%
1 Aug 2026no data
8 Aug 2026no data
15 Aug 2026no data
22 Aug 2026no data
29 Aug 2026no data
5 Sept 202669%
12 Sept 202675%
19 Sept 202664%
26 Sept 202677%
3 Oct 202672%
10 Oct 202669%
17 Oct 202680%

A passenger going by the timetable at Heathrow Terminal 5 would find about two departures in ten leaving more than 2.5 minutes early or 5 minutes late.

Heathrow Terminal 5
On time
80%
Cut short
3.3%

86 minutes was the longest gap between buses this week, at Hatton Cross Station towards Bridge Road, from 22:44 on Friday 16 October to 00:10 on Saturday 17 October. This excludes any gaps caused by holes in our own data. Watch it happen →

Journeys cut short

Last week: 4.8% of journeys were turned back before the end of the line in the week ending 17 October 2026. Everyone on board has to get off; for anyone waiting further along the route it's effectively a cancellation.

towards Bridge Road

Last week, none of 107 journeys was turned short.

towards Heathrow Terminal 5

Last week, 24 of 398 journeys (6%) were turned short.

  • Cargo Centre1.1 km short of the end 16
  • Hatton Cross Station5.1 km short of the end 3
  • Scylla Road2.1 km short of the end 2
  • Sealand Road0.7 km short of the end 2
  • Hounslow West Station8.6 km short of the end 1

Each place is the last stop the bus was timed at before it turned round, with the typical distance it fell short of the end of the line. The five busiest are named; the rest are counted together.

Compared with TfL's own figures

QuarterTfLOurs
2025/26 Q313 Sept – 2 Jan 202674% on timeno figure
2026/27 Q11 Apr – 26 Jun 202672% on timeno figure

TfL's figures come from its own tracking equipment and its own timetable; mine are computed from the buses' public position feed. They are the same calculation on independent data, so they should broadly agree and move together rather than match exactly.

About this data
Data collected, week ending 17 October 2026
100% of the week. This is the share of the week for which we hold bus location data at all, across the whole of London rather than for this route. A week under 60% is not published; under 90% it is marked as thin.
Departures observed
  • Heathrow Terminal 5: 196 departures seen
A guide to how much evidence sits behind this week's figures, not a measure of the service.
How it is measured
Every day, 05:00–23:59. On time means leaving no more than 2.5 minutes early or 5 minutes late. A day with less than four hours of data collected shows no daily figure. How these figures are made.
Gaps in the record for this period (39)

Most recent first. Hover a week on the chart and it will name the gap behind it. Most are a few missing hours on an otherwise ordinary day.

  • 17 Sept 2026 partial day, no data 12:00-12:59: our collector was down (machine off or power cut)
  • 28 Aug 2026 partial day, no data 20:00-23:59: our collector was down (machine off or power cut)
  • 29 Jul – 26 Aug 2026 no collection: the volunteer BODS archive was down and our own collector had not yet started
  • 28 Jul 2026 partial day, no data 11:00-23:59: no collection: the volunteer BODS archive was down and our own collector had not yet started
  • 7 Jul 2026 partial day, no data 15:00-15:59: gap in the volunteer BODS archive (its collector was down)
  • 5 Jul 2026 partial day, no data 06:00-11:59: gap in the volunteer BODS archive (its collector was down)
  • 4 Jul 2026 partial day, no data 06:00-21:59: gap in the volunteer BODS archive (its collector was down)
  • 2 Jul – 3 Jul 2026 gap in the volunteer BODS archive (its collector was down)
  • 8 Jun 2026 partial day, no data 07:00-08:59: gap in the volunteer BODS archive (its collector was down)
  • 7 Jun 2026 partial day, no data 12:00-12:59, 18:00-19:59: gap in the volunteer BODS archive (its collector was down)
  • 6 Jun 2026 partial day, no data 12:00-12:59, 16:00-16:59, 18:00-18:59: gap in the volunteer BODS archive (its collector was down)
  • 27 Apr 2026 partial day, no data 12:00-12:59: gap in the volunteer BODS archive (its collector was down)
  • 21 Apr 2026 partial day, no data 06:00-11:59: gap in the volunteer BODS archive (its collector was down)
  • 20 Apr 2026 partial day, no data 15:00-23:59: gap in the volunteer BODS archive (its collector was down)
  • 16 Apr 2026 partial day, no data 12:00-15:59: gap in the volunteer BODS archive (its collector was down)
  • 28 Feb 2026 partial day, no data 06:00-18:59: gap in the volunteer BODS archive (its collector was down)
  • 16 Feb – 27 Feb 2026 gap in the volunteer BODS archive (its collector was down)
  • 15 Feb 2026 partial day, no data 16:00-23:59: gap in the volunteer BODS archive (its collector was down)
  • 30 Jan 2026 partial day, no data 20:00-23:59: gap in the volunteer BODS archive (its collector was down)
  • 25 Dec 2025 no bus service on Christmas Day
  • 23 Dec 2025 partial day, no data 06:00-07:59: gap in the volunteer BODS archive (its collector was down)
  • 5 Dec 2025 partial day, no data 06:00-08:59: gap in the volunteer BODS archive (its collector was down)
  • 24 Nov 2025 partial day, no data 17:00-17:59: gap in the volunteer BODS archive (its collector was down)
  • 17 Nov 2025 partial day, no data 06:00-09:59: gap in the volunteer BODS archive (its collector was down)
  • 15 Nov – 16 Nov 2025 no London vehicles in the national feed — TfL's export to BODS was down (the volunteer archive itself was collecting)
  • 14 Nov 2025 partial day, no data 06:00-07:59, 13:00-23:59: gap in the volunteer BODS archive (its collector was down)
  • 31 Oct 2025 partial day, no data 06:00-07:59: gap in the volunteer BODS archive (its collector was down)
  • 17 Oct 2025 partial day, no data 06:00-07:59: gap in the volunteer BODS archive (its collector was down)
  • 10 Oct 2025 partial day, no data 06:00-08:59: gap in the volunteer BODS archive (its collector was down)
  • 3 Oct 2025 partial day, no data 06:00-11:59: gap in the volunteer BODS archive (its collector was down)
  • 19 Sept 2025 partial day, no data 06:00-08:59: gap in the volunteer BODS archive (its collector was down)
  • 5 Sept 2025 partial day, no data 06:00-09:59: gap in the volunteer BODS archive (its collector was down)
  • 1 Aug 2025 partial day, no data 06:00-09:59: gap in the volunteer BODS archive (its collector was down)
  • 18 Jul 2025 partial day, no data 06:00-09:59: gap in the volunteer BODS archive (its collector was down)
  • 8 Jul 2025 partial day, no data 06:00-08:59: gap in the volunteer BODS archive (its collector was down)
  • 6 Jul – 7 Jul 2025 gap in the volunteer BODS archive (its collector was down)
  • 5 Jul 2025 partial day, no data 18:00-23:59: gap in the volunteer BODS archive (its collector was down)
  • 4 Jul 2025 partial day, no data 06:00-14:59: gap in the volunteer BODS archive (its collector was down)
  • 25 Jun 2025 partial day, no data 06:00-11:59: gap in the volunteer BODS archive (its collector was down)

For latest timetable and route information, see TfL's official page.

Contains public sector information licensed under the Open Government Licence v3.0; bus data via the DfT Bus Open Data Service and Transport for London. Figures are computed from observed bus positions, every day, 05:00–23:59. How these figures are made. Bus positions from the Department for Transport’s Bus Open Data Service (BODS); the Department for Transport cannot warrant the accuracy or quality of the data published there. Positions before September 2026 come from the Bus Open Data archive generously built and kept by Open Innovations, with thanks. Route lines and stops: Powered by TfL Open Data. Contains OS data © Crown copyright and database rights 2016. Geomni UK Map data © and database rights [2019]. These pages and the bus replay are built independently from open data: Transport for London, the Department for Transport and the bus operators had no part in making them, and none of them endorses them. Not for planning a journey.