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Bus route 339

Transport
339
Usually a Switch Mobility Optare.

67% 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.

Watch a day of route 339’s buses: every bus, replayed on the map. Or click a day on the chart.

The weekly figures

The share of departures that left on time.

Week endingLeytonstone Stn / Grove Green RoadShadwell Station
21 Jun 2025no datano data
28 Jun 202589%80%
5 Jul 202583% thin85% thin
12 Jul 202589% thin86% thin
19 Jul 202592%74%
26 Jul 202592%96%
2 Aug 202582%78%
9 Aug 202593%90%
16 Aug 202594%88%
23 Aug 202592%85%
30 Aug 202595%78%
6 Sept 202589%80%
13 Sept 202576%75%
20 Sept 202595%88%
27 Sept 202592%84%
4 Oct 202583%76%
11 Oct 202595%85%
18 Oct 202595%73%
25 Oct 202588%66%
1 Nov 202593%76%
8 Nov 202592%86%
15 Nov 202591% thin85% thin
22 Nov 202590% thin71% thin
29 Nov 202595%74%
6 Dec 202586%76%
13 Dec 202581%67%
20 Dec 202594%76%
27 Dec 202586% thin76% thin
3 Jan 202692%95%
10 Jan 202686%83%
17 Jan 202685%81%
24 Jan 202691%88%
31 Jan 202689%87%
7 Feb 202692%85%
14 Feb 202694%91%
21 Feb 2026no datano data
28 Feb 2026no datano data
7 Mar 202693%70%
14 Mar 202688%84%
21 Mar 202686%71%
28 Mar 202691%77%
4 Apr 202685%83%
11 Apr 202690%72%
18 Apr 202687%87%
25 Apr 202681% thin65% thin
2 May 202693%85%
9 May 202696%85%
16 May 202690%78%
23 May 2026no datano data
30 May 202688%64%
6 Jun 202679%62%
13 Jun 202674%35%
20 Jun 202685%47%
27 Jun 202681%55%
4 Jul 2026no datano data
11 Jul 202677%33%
18 Jul 202682%45%
25 Jul 202690%48%
1 Aug 2026no datano data
8 Aug 2026no datano data
15 Aug 2026no datano data
22 Aug 2026no datano data
29 Aug 2026no datano data
5 Sept 202689%34%
12 Sept 202686%34%
19 Sept 202691%43%
26 Sept 202684%28%
3 Oct 202691%39%
10 Oct 202690%44%
17 Oct 202691%42%

A passenger going by the timetable at Shadwell Station would find about six departures in ten leaving more than 2.5 minutes early or 5 minutes late.

Leytonstone Stn / Grove Green Road
On time
91%
Cut short
0.2%
Shadwell Station
On time
42%
Cut short
1.2%

68 minutes was the longest gap between buses this week, at Burgess Road towards Shadwell Station, on Thursday 15 October from 21:42 to 22:50. This excludes any gaps caused by holes in our own data. Watch it happen →

Journeys cut short

Last week: 0.2% 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 Leytonstone Station / Grove Green Road

Last week, 1 of 406 journeys (0%) were turned short.

  • Wansbeck Road7.7 km short of the end 1

towards Shadwell Station

Last week, 1 of 397 journeys (0%) were turned short.

  • Fish Island5.7 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 202678% on timeno figure
2026/27 Q11 Apr – 26 Jun 202681% 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
  • Leytonstone Stn / Grove Green Road: 260 departures seen
  • Shadwell Station: 253 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.