Chiltern Railways 631U31
View line Chiltern Railways
Alerts for train 631U31
Alerts are saved per line, not per trip id, so they keep working when the operator changes the timetable. This train runs on line Chiltern Railways.
The mini-map returns when the train runs
On-time · 30 days
85%
17/20 runs under 3 min
RT coverage: 20 full · 0 partial · 0 no data
On-time · 90 days
84%
52/62 runs under 3 min
RT coverage: 62 full · 0 partial · 0 no data
Typical delay
0min
Median at arrival, 90 days
30 days: 0 min
P90
+3min
9 in 10 runs arrive with less than this
30 days: +3 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
- Tue 18 Aug Max en route +19 min · last fix heading to 69416 +18 min
- Fri 9 Oct Max en route +5 min · last fix heading to Haddenham & Thame Parkway +5 min
- Fri 14 Aug Max en route +5 min · last fix heading to 69416 +5 min
- Fri 25 Sept Max en route +6 min · last fix heading to 69416 +4 min
- Tue 15 Sept Max en route +7 min · last fix heading to 69416 +4 min
Distribution · 90 days
62 runs with a known final delay. On time = under 3 min, the same cut the map uses.
- Early 3% · 2
- On time 81% · 50
- 3–10 min 15% · 9
- 10–30 min 2% · 1
- 30+ min 0% · 0
On-time by weekday
- 83% M n=12
- 85% T n=13
- 85% W n=13
- 100% T n=12
- 67% F n=12
- — S n=0
- — S n=0
Recent runs
| Date | Last stop | Final | Max |
|---|---|---|---|
| Fri 30 Oct | Haddenham & Thame Parkway 13:57 | +1 min | +1 min |
| Thu 29 Oct | Haddenham & Thame Parkway 13:58 | +2 min | +3 min |
| Wed 28 Oct | Haddenham & Thame Parkway 13:59 | +3 min | +3 min |
| Tue 27 Oct | Haddenham & Thame Parkway 13:56 | −1 min | — |
| Mon 26 Oct | Haddenham & Thame Parkway 13:55 | −1 min | +1 min |
| Fri 23 Oct | Haddenham & Thame Parkway 13:59 | +3 min | +4 min |
| Thu 22 Oct | Haddenham & Thame Parkway 13:55 | −1 min | +1 min |
| Wed 21 Oct | Haddenham & Thame Parkway 13:56 | 0 min | — |
| Tue 20 Oct | Haddenham & Thame Parkway 13:55 | −1 min | +1 min |
| Mon 19 Oct | Haddenham & Thame Parkway 13:58 | +2 min | +2 min |
| Fri 16 Oct | Haddenham & Thame Parkway 13:55 | −1 min | — |
| Thu 15 Oct | Haddenham & Thame Parkway 13:56 | −1 min | +1 min |
| Wed 14 Oct | Haddenham & Thame Parkway 13:56 | 0 min | +1 min |
| Tue 13 Oct | Haddenham & Thame Parkway 13:57 | +1 min | +1 min |
| Mon 12 Oct | Haddenham & Thame Parkway 13:55 | −1 min | +1 min |
| Fri 9 Oct | Haddenham & Thame Parkway 14:02 | +5 min | +5 min |
| Thu 8 Oct | Haddenham & Thame Parkway 13:56 | 0 min | +2 min |
| Wed 7 Oct | Haddenham & Thame Parkway 13:55 | −1 min | — |
| Tue 6 Oct | Haddenham & Thame Parkway 13:56 | 0 min | +1 min |
| Mon 5 Oct | Haddenham & Thame Parkway 13:56 | 0 min | — |
| Fri 2 Oct | 69416 13:56 | 0 min | +2 min |
| Thu 1 Oct | 69416 13:59 | +2 min | +2 min |
| Wed 30 Sept | 69416 13:56 | 0 min | +2 min |
| Tue 29 Sept | 69416 13:55 | −1 min | — |
| Mon 28 Sept | 69416 13:55 | −1 min | — |
| Fri 25 Sept | 69416 14:00 | +4 min | +6 min |
| Thu 24 Sept | 69416 13:55 | −1 min | +1 min |
| Wed 23 Sept | 69416 13:57 | 0 min | +1 min |
| Tue 22 Sept | 69416 13:56 | 0 min | +1 min |
| Mon 21 Sept | 69416 13:56 | −1 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.