• UK CAA now monitors 14 more UK* airports for on-time performance and average delay, bringing total to 24
  • Increased coverage means 90 per cent of passenger flights and 97 per cent of passenger journeys are now monitored
  • Latest consumer focused infographic highlights the airports now covered by the CAA

Air passengers can now compare flight punctuality at 24 of the UK's busiest airports, after the UK Civil Aviation Authority's (CAA) more than doubled the number of airports it monitors.

Fourteen more airports are now being assessed for on-time performance and average delay, as the CAA continues its drive to publish more information, which will assist passengers to make comparisons between the UK's air transport services.

The airports newly covered are: Aberdeen; Belfast City; Belfast International; Bournemouth; Bristol; Cardiff; Doncaster Sheffield; Durham Tees Valley; East Midlands; Exeter; Jersey; Liverpool, Leeds Bradford and Southampton.

These join 10 other airports already monitored by the CAA, namely: Birmingham; Edinburgh; Gatwick; Glasgow; Heathrow; London City; Luton; Manchester; Newcastle and Stansted.

The addition of 14 airports means the number of UK passenger flights monitored for punctuality rises from 73 per cent to 90 per cent, and the number of individual air passenger journeys increases from 83 per cent to 97 per cent.

Commenting on the increased coverage, Iain Osborne, Group Director for Regulatory Policy at the CAA, said: “The CAA is here to look after passengers' interests and we want to make sure people can make more informed decisions about which airport they would like to fly from.

“Our expanded coverage means even more air passengers can now see for themselves how well the country's busiest airports are performing against flight punctuality.”

The new punctuality data has been collected by the UK CAA since October last year, which means we can now publish Q4 data for both on-time performance and average delay. Furthermore we have retrospectively collected Q4 data for 2013, providing a year-on-year comparison.

Tables containing Q4 flight punctuality information, along with annual passenger flights, at the 24 UK airports can be found here.

*For reporting purposes the UK includes Jersey.

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For further media information contact the CAA Press Office on: 020 7453 6030. You can also follow us on Twitter @UK_CAA.

Notes to Editors

  1. The CAA statistics on punctuality of passenger flights cover both arrivals and departures. Actual times of operation are derived from air transport movements returns made to the CAA, which are compared with planned arrival and departure times supplied by Airport Co-ordination Ltd.
  2. On-time performance and delay are calculated from the scheduled on-stand time (provided by Airport Co-ordination Ltd.), the reported runway time (provided by the airport) and the expected time an aircraft takes to travel between a stand and the runway (this taxi time is estimated using historic data - see note 12).
  3. An 'on-time' flight is defined as departing or arriving at a UK airport either early or up to and including 15 minutes late.
  4. Average delay is the total minutes of delay recorded by all flights (with early arriving flights counted as zero delay) divided by the total number of flights monitored.
  5. Delay is recorded as the difference between an aircraft's scheduled and actual arrival or departure time at the airport terminal. It does not therefore measure any delay, such as that due to congestion, which has already been allowed for in the planned flight times of the service. Delays can occur for a variety of reasons. Operating circumstances, both within and without the airline's control, also vary by route and by type of service.
  6. The statistics cover only those flights which were operated; they do not cover those flights which were cancelled. Some airport or airline business models prioritise delaying flights rather than cancelling them outright.
  7. The characteristics of scheduled and charter modes are different. For example, scheduled and charter flights tend to operate to different destinations at different times of the day and week. Because of this and the exclusion of cancellations from the data, simplistic comparisons between the two modes should be avoided. These tables are not intended and should not be treated as a direct comparison between scheduled and charter services.
  8. Actual times of operation are derived from the flight by flight air transport movement returns made by airports to the CAA, which are compared with planned arrival and departure times supplied by Airport Co-ordination Ltd. The data supplied by Airports Co-ordination Ltd includes changes made up to 30 minutes before operation.
  9. The use of average taxi times is sufficient for calculating an aggregate level of on-time performance, but would not be suitable for reviewing the punctuality of an individual flight.
  10. The status of “experimental” is assigned to new data series which are not yet established. In this instance, it reflects the relative lack of historical comparative data and the estimation required for the taxi-time adjustment. In particular, users should recognise that greater variability in traffic volumes over time may increase the uncertainty around estimates made.
  11. All-cargo services and air taxi services are excluded from the analysis.
  12. The CAA is the UK's specialist aviation regulator. Its regulatory activities range from making sure that the aviation industry meets the highest technical and operational safety standards to preventing holidaymakers from being stranded abroad or losing money because of tour operator insolvency.
  13. The information contained in this report has been compiled from various sources and it is not possible for the CAA to verify whether it is accurate, nor does the CAA undertake to do so. Consequently, the CAA cannot accept any liability for any financial loss caused by any person's reliance on it.
  14. Punctuality data is published on the CAA website. For data queries please e-mail one of our analysts at the Civil Aviation Authority on aviation.intelligence@caa.co.uk.
  15. The CAA is committed to publishing information which it believes will assist consumers make comparisons between the UK's air transport services. This policy is in line with the duties set out in section 83 of the Civil Aviation Act 2012 and follows the CAA's 'Better Information about UK aviation' consultation in 2013 and subsequent next steps/statement of policy.