How reliable is the Northern line?

Over the past 30 days, the Northern line averaged 80.4% good service, ranked 8th out of 20 lines. Over the past 7 days it was 83.2%. 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 Northern line? Live status

Status: Good Service

Last updated: 12:40 — 27 June 2026

Is the Northern line running today?

Yes, as of the afternoon of 27 June 2026, the Northern line is running with good service.

This page shows the latest Northern 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 Northern line

Northern Line Performance Summary

Last 24 hours

In the last 24 hours (27 June 2026), the Northern line averaged 92.4% good service - fairly good. The weekly figure was similar.

Last 7 days

During the past seven days up to 26 June 2026, the Northern line sat at 83.2% reliability across all hours - nothing special. During peak hours, reliability dropped noticeably to 75.5%. Over the past 90 days, Fridays have tended to be the best day at 91.5%, while Mondays have been the weakest at 61.0%.

Last 30 days

Over the 30 days from 28 May 2026 to 26 June 2026, the Northern line came in at 80.4% - fairly middling, and ranked 8th out of 20, in the upper half. During peak hours, reliability was broadly similar at 79.8%.

Last year

Over the last year (27 Jun 2025 to 27 Jun 2026), the Northern line has ranked 11th out of 20 lines with 79.6% reliability, in the lower half.

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

Reliability summary

Last 24 hours

92.4% good service

Last 7 days

83.2% good service

Last 30 days

80.4% good service

Network ranking (30 days)

8th of 20 lines

Peak hours (30 days)

79.8% good service

Peak ranking (30 days)

10th 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 Northern line

52 stations · 4 branches

Via Bank42 stations

Edgware ↔ Battersea Power Station22 stations

Via Charing Cross42 stations

High Barnet ↔ Battersea Power Station23 stations

Northern Line Performance and Reliability Data

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

Northern line service status: last 24 hours

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

Northern 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).

Northern line monthly reliability trend

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

Northern 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.

Northern line reliability by day of week

Over the last 90 days, the Northern line has performed best on Fridays (91.5%) and worst on Mondays (61%).

Northern line typical station busyness

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

Recent status changes

Good Service — 27 Jun, 02:54
Minor Delays — 27 Jun, 02:30
Good Service — 26 Jun, 20:06
Minor Delays — 26 Jun, 18:40
Good Service — 26 Jun, 08:56
Minor Delays — 26 Jun, 08:25
Good Service — 26 Jun, 08:23

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.

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

About the Northern line

The Northern line is a love-hate classic: quick, useful, and absolutely rammed when London is commuting. The branches and 'via Bank / via Charing Cross' split add extra ways to accidentally end up somewhere else. It's brilliant for Camden Market, and for Battersea Power Station when you want food, bars, and a riverside stroll. Check live status so you don't get caught in the crush.