How reliable is the Piccadilly line?

Over the past 30 days, the Piccadilly line averaged 54.1% good service, ranked 19th out of 20 lines. Over the past 7 days it was 34.4%. Reliability is measured as the percentage of operational time (excluding closures) with Good Service, based on TfL data monitored at 60-second intervals.

Are there any delays on the Piccadilly line? Live status

Status: Service Closed

Piccadilly Line: Service will resume later this morning.

Last updated: 02:22 — 22 July 2026

Is the Piccadilly line running today?

No, as of the morning of 22 July 2026, the Piccadilly line is currently service closed.

Details: Piccadilly Line: Service will resume later this morning.

This page shows the latest Piccadilly line status, plus reliability trends based on observed service history. Set up free alerts on the homepage to get emailed when the status changes.

Live status for all lines Compare all lines Station closures on the Piccadilly line

Piccadilly Line Performance Summary

Last 24 hours

In the last 24 hours (22 July 2026), the Piccadilly line averaged 71.6% good service - rather poor. The weekly figure of 34.4% tells a different story.

Last 7 days

During the past seven days up to 21 July 2026, the Piccadilly line sat at 34.4% reliability across all hours - really rather poor. During peak hours, reliability was slightly higher at 64.6%. Over the past 90 days, Tuesdays have tended to be the best day at 73.2%, while Fridays have been the weakest at 22.7%.

Last 30 days

Over the 30 days from 22 June 2026 to 21 July 2026, the Piccadilly line came in at 54.1% - quite poor indeed, and ranked 19th out of 20, near the bottom. During peak hours, reliability came in at 68.4%, edging slightly above the all-hours figure.

Last year

Over the last year (22 Jul 2025 to 22 Jul 2026), the Piccadilly line has ranked 20th out of 20 lines with 57.7% reliability, the worst on the network.

How we calculate these figures Get free Piccadilly line delay alerts →

Reliability summary

Last 24 hours

71.6% good service

Last 7 days

34.4% good service

Last 30 days

54.1% good service

Network ranking (30 days)

19th of 20 lines

Peak hours (30 days)

68.4% good service

Peak ranking (30 days)

15th of 20 lines

Reliability is the percentage of operational time (excluding normal closures) that the line displayed “Good Service”. Peak hours: weekday mornings (07:00–09:30) and evenings (16:30–19:00).

All stations on the Piccadilly line

53 stations · 3 branches

1 station on this line has active issues: Ickenham (lift out)

Cockfosters ↔ Uxbridge42 stations

Cockfosters ↔ Heathrow Terminal 437 stations

Cockfosters ↔ Heathrow Terminal 538 stations

Piccadilly Line Performance and Reliability Data

Detailed charts showing how the Piccadilly line has performed over different time periods. All reliability figures are time-weighted and exclude normal overnight closures.

Piccadilly line service status: last 24 hours

Every status change on the Piccadilly line in the past 24 hours, from Good Service through to suspensions and closures.

Piccadilly line status distribution: last 7 days

How operational time was split between service statuses over the past week. This shows status distribution, not the reliability figure (which excludes planned closures and overnight closures).

Piccadilly line monthly reliability trend

Month-by-month reliability percentage showing long-term performance patterns and seasonal trends.

Piccadilly line reliability by hour of day

Average reliability for each hour of the day, based on 60 days of monitoring. Helps identify the best and worst travel times.

Piccadilly line reliability by day of week

Over the last 90 days, the Piccadilly line has performed best on Tuesdays (73.2%) and worst on Fridays (22.7%).

Piccadilly line typical station busyness

How busy stations on the Piccadilly line typically are throughout the day, based on TfL crowding data. 100% = the single busiest hour of the week.

Recent status changes

Service Closed — 22 Jul, 01:25
Good Service — 22 Jul, 01:17
Part Suspended — 22 Jul, 00:57Piccadilly Line: No service between Heathrow Terminals 2 & 3 and Heathrow Terminal 5 while we respond to a security alert at Heathrow Termin…
Good Service — 21 Jul, 19:53
Minor Delays — 21 Jul, 14:13
Good Service — 21 Jul, 04:17
Service Closed — 21 Jul, 01:20

How we calculate reliability

Time-weighted: Reliability is the percentage of operational time with “Good Service”, not a count of incidents. A 23-hour good day with a 1-hour delay scores ~96%, not 50%.
Operational hours only: Normal overnight closures (“Service Closed”) and planned closures are excluded so they don’t deflate scores.
Status change tracking: We record every status change from the TfL API (polled every 60 seconds), then calculate the duration of each status period.
Peak hours: Peak-hour figures cover weekday mornings (07:00-09:30) and evenings (16:30-19:00) only. All-hours figures include the full operational day.
Refresh frequency: Statistics on this page are recalculated every 5 minutes. Day-of-week patterns are based on the last 90 days of data.
Data source: All data comes from the Transport for London Unified API.
New lines: DLR, Elizabeth line, and Tram were recently added to our monitoring. Annual statistics for these lines will become available once a full year of data has been collected.

Need accessibility info? Check step-free access alerts for live lift status at stations on this line.

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See what happens to journey times if the Piccadilly goes down - try our interactive travel time map.

About the Piccadilly line

The Piccadilly line is your Heathrow lifeline and West End workhorse, but it's also notorious for older trains and warm tunnels. It's the line for Covent Garden theatre plans, Arsenal match days (hello, Emirates Stadium), and airport runs with luggage and time pressure. Check for delays before you travel, especially if you've got a flight to catch.