Elizabeth line 509T21
View line Elizabeth line
Alerts for train 509T21
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line Elizabeth line.
The mini-map returns when the train runs
On-time · 30 days
72%
18/25 runs under 3 min
RT coverage: 25 full · 0 partial · 0 no data
On-time · 90 days
62%
48/78 runs under 3 min
RT coverage: 78 full · 0 partial · 0 no data
Typical delay
+2min
Median at arrival, 90 days
30 days: +1 min
P90
+10min
9 in 10 runs arrive with less than this
30 days: +12 min
Last 30 days
Delay at the end of each run, in minutes. One bar per run.
- On time (<3 min)
- 3–10 min
- 10–30 min
- 30+ min
- Partial coverage
- No data
Worst days
- Thu 8 Oct Max en route +23 min · last fix heading to Heathrow Terminal 5 +23 min
- Tue 22 Sept Max en route +23 min · last fix heading to Heathrow Terminal 5 +22 min
- Wed 14 Oct Max en route +17 min · last fix heading to Southall +17 min
- Tue 27 Oct Max en route +16 min · last fix heading to Southall +16 min
- Tue 13 Oct Max en route +15 min · last fix heading to Manor Park +15 min
Distribution · 90 days
78 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 0% · 0
- On time 62% · 48
- 3–10 min 28% · 22
- 10–30 min 10% · 8
- 30+ min 0% · 0
On-time by weekday
- 58% M n=12
- 62% T n=13
- 77% W n=13
- 46% T n=13
- 69% F n=13
- 62% S n=13
- 0% S n=1
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Sat 7 Nov | Hayes & Harlington 21:34 | +1 min | +6 min |
| Fri 6 Nov | Heathrow Terminal 5 19:34 | +2 min | +2 min |
| Thu 5 Nov | Heathrow Terminal 5 19:35 | 0 min | +1 min |
| Wed 4 Nov | Hayes & Harlington 19:34 | +1 min | +3 min |
| Tue 3 Nov | Heathrow Terminal 5 19:34 | 0 min | +5 min |
| Mon 2 Nov | Heathrow Terminal 5 19:34 | +2 min | +2 min |
| Sat 31 Oct | Hayes & Harlington 21:43 | +1 min | +1 min |
| Fri 30 Oct | Heathrow Terminal 5 19:41 | −1 min | +2 min |
| Thu 29 Oct | Heathrow Terminal 5 19:46 | +3 min | +4 min |
| Wed 28 Oct | Hayes & Harlington 19:44 | +1 min | +2 min |
| Tue 27 Oct | Southall 19:58 | +16 min | +16 min |
| Mon 26 Oct | Heathrow Terminal 5 19:42 | 0 min | +1 min |
| Sat 24 Oct | Heathrow Terminal 5 21:49 | +7 min | +7 min |
| Fri 23 Oct | Stratford (London) 19:09 | 0 min | +1 min |
| Thu 22 Oct | Maryland 19:11 | +2 min | +2 min |
| Wed 21 Oct | Heathrow Terminal 5 19:43 | 0 min | +1 min |
| Tue 20 Oct | Heathrow Terminal 5 19:42 | 0 min | +1 min |
| Mon 19 Oct | Heathrow Terminal 5 19:48 | +5 min | +5 min |
| Sat 17 Oct | Heathrow Terminal 5 21:43 | 0 min | +5 min |
| Fri 16 Oct | Heathrow Terminal 5 19:42 | 0 min | +1 min |
| Thu 15 Oct | Heathrow Terminal 5 19:43 | +1 min | +2 min |
| Wed 14 Oct | Southall 19:48 | +17 min | +17 min |
| Tue 13 Oct | Manor Park 19:15 | +15 min | +15 min |
| Mon 12 Oct | Hayes & Harlington 19:43 | +1 min | +1 min |
| Sat 10 Oct | Heathrow Terminal 5 21:45 | +3 min | +5 min |
| Fri 9 Oct | Heathrow Terminal 5 19:44 | +2 min | +3 min |
| Thu 8 Oct | Heathrow Terminal 5 20:05 | +23 min | +23 min |
| Wed 7 Oct | Heathrow Terminal 5 19:43 | 0 min | +1 min |
| Tue 6 Oct | Heathrow Terminal 5 19:45 | +2 min | +2 min |
| Mon 5 Oct | Heathrow Terminal 5 19:42 | 0 min | — |
Each run is closed into train_runs (country, train number, service day) from the live positions. Final delay = last delay seen. Partial coverage: the feed stopped before the final stop (last value used, hatched in the chart). No data: a run without any valid delay; counts as neither on time nor late. Data collected since 11 July 2026.