Heathrow Express

Heathrow Express is one of the smaller operators in this archive — 14,056 recorded services from 6 Aug 2026 to 7 Nov 2026, around 150 a day — and it ran 90% of them to within five minutes, ahead of the national figure.

11,743 arrivals were recorded across the window, 10,611 of them within five minutes and 37 more than half an hour late. At this volume a single badly delayed working is worth a visible fraction of a percentage point.

Volume moved between 97 services on Sunday, 1 November 2026 and 155 on Sunday, 13 September 2026.

The average delay at destination was 1.4 minutes. The worst single arrival recorded was 1h 29m behind schedule, Heathrow Airport T5 to London Paddington on Thursday, 10 September 2026.

The day-to-day spread is wide — 58 points between its best day, Wednesday, 21 October 2026 at 100%, and its worst, Tuesday, 8 September 2026 at 42%.

546 services were cancelled, 3.9% of everything booked — above the 2.3% the network cancelled over the same dates. The worst single day was Sunday, 13 September 2026, at 50% of that day's timetable.

Counting those cancellations as failures, the way the industry's own measure does, takes the on-time share from 90% of recorded arrivals to 86% of everything booked whose outcome is known — 4.0 points.

Ranked on on-time share of recorded arrivals against the 34 operators with enough of them to compare, Heathrow Express comes 11th.

Heathrow Express in numbers

Every percentage among the bands is of the 11,743 services whose arrival reached the archive, not of all 14,056, and the bands are exclusive. 1,767 ran without an arrival being recorded, and nothing is claimed about those. The row counting cancellations is those same 10,611 on-time arrivals over a denominator that also holds the 546 trains that did not run at all. Delay is judged at the destination, a stricter test than the industry's own measure and not comparable with it. The on-time share and the average delay answer different questions.

Day by day

94 archived days, 6 Aug 2026 to 7 Nov 2026, widest bar the busiest, filled to the share that arrived within five minutes. The same days across every operator.

In the daily longest-delay league

Heathrow Express appears 5 times across 94 archived days, on 3 separate dates in the ten shown. These are appearances in the daily league, not this operator's own worst delays.

Recorded live from the Darwin and TRUST feeds on each of the 94 days above, and aggregated here. HX is this operator's ATOC code. How these figures are measured · All operators · Sources and licences