How often are these flights late or cancelled?
London City
In the twelve months from July 2025 to June 2026, 21.0% of 23,567 movements arriving into the UK were disrupted — more than fifteen minutes late or cancelled at short notice.
Put the other way round, 79.0% of 23,567 movements met the fifteen-minute convention. These are historical observations, not a forecast.
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
Source: CAA punctuality statistics · snapshot 17/08/2026 10:24 · method route-record-v2.1 · Versioned claims, formulas and entity mapping.
0 operations (0.00%) excluded because their published percentages could not be reconciled to whole numbers. Excluded operations enter neither the numerator nor the denominator. Outcome figures and comparisons are unavailable when the excluded share exceeds fifteen percent.
The four numbers at a glance
21.0% of 23,567 movements were disrupted over July 2025 to June 2026.
Average delay covers delayed movements only. Its range reflects rounded source means and the unknown count of exactly punctual movements.
| Disruption | Short-notice cancellations | Delay among delayed movements | Over three hours |
|---|---|---|---|
| 21.0% of 23,567 movements | 2.1% of 23,567 movements | 23.8–58.9 minutes; delayed denominator 4,455–10,053 | 0.3% of 23,567 movements |
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
When late, how late?
0.3% of 23,567 movements passed the three-hour mark.
The ladder shows how many movements crossed each threshold. Cancellations are separate: 2.1% of 23,567 movements.
| Delay | Share and sample | One event per movements |
|---|---|---|
| More than 15 minutes | 18.9% of 23,567 movements | 5.3 |
| More than 30 minutes | 10.9% of 23,567 movements | 9.2 |
| More than 60 minutes | 4.5% of 23,567 movements | 22.4 |
| More than 120 minutes | 1.1% of 23,567 movements | 91.0 |
| More than 180 minutes | 0.3% of 23,567 movements | 306.1 |
| More than 360 minutes | 0.0% of 23,567 movements | 3,366.7 |
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
Slightly late or occasionally a disaster?
1.1% of 23,567 movements passed two hours.
The histogram shows the published delay bands. Bucket shares use all reported operations, including unmatched records; cancellations are reported separately.
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
Better or worse since the start of the archive?
Best month: Mar 2021, 1.6% of 61 movements. Worst month: Jul 2019, 100.0% of 92 movements.
The line traces every month. Lower disruption is better; gaps are never zeros. Pandemic readings describe a different operating regime.
Every monthly observation
| Month | Disruption on arrivals |
|---|---|
| Jan 2018 | 16.4% of 2,974 movements |
| Feb 2018 | 26.6% of 3,045 movements |
| Mar 2018 | 22.5% of 3,304 movements |
| Apr 2018 | 22.9% of 3,211 movements |
| May 2018 | 25.2% of 3,454 movements |
| Jun 2018 | 27.5% of 3,408 movements |
| Jul 2018 | 26.6% of 3,362 movements |
| Aug 2018 | 19.4% of 3,235 movements |
| Sep 2018 | 17.4% of 3,258 movements |
| Oct 2018 | 18.9% of 3,476 movements |
| Nov 2018 | 100.0% of 110 movements |
| Dec 2018 | 100.0% of 40 movements — small sample, not ranked |
| Jan 2019 | 15.0% of 3,174 movements |
| Feb 2019 | 22.8% of 3,179 movements |
| Mar 2019 | 24.2% of 3,536 movements |
| Apr 2019 | 18.3% of 3,419 movements |
| May 2019 | 100.0% of 53 movements |
| Jun 2019 | 100.0% of 49 movements — small sample, not ranked |
| Jul 2019 | 100.0% of 92 movements |
| Aug 2019 | 100.0% of 43 movements — small sample, not ranked |
| Sep 2019 | 100.0% of 41 movements — small sample, not ranked |
| Oct 2019 | 100.0% of 48 movements — small sample, not ranked |
| Nov 2019 | 100.0% of 31 movements — small sample, not ranked |
| Dec 2019 | 100.0% of 40 movements — small sample, not ranked |
| Jan 2020 | 14.1% of 3,072 movements |
| Feb 2020 | 28.2% of 3,118 movements |
| Mar 2020 | 27.8% of 1,986 movements |
| Apr 2020 | suppressed: fewer than twenty movements |
| May 2020 | suppressed: fewer than twenty movements |
| Jun 2020 | suppressed: fewer than twenty movements |
| Jul 2020 | 3.4% of 175 movements |
| Aug 2020 | 12.3% of 269 movements |
| Sep 2020 | 8.1% of 405 movements |
| Oct 2020 | 3.1% of 388 movements |
| Nov 2020 | 6.9% of 160 movements |
| Dec 2020 | 21.2% of 137 movements |
| Jan 2021 | 20.2% of 114 movements |
| Feb 2021 | 16.7% of 48 movements — small sample, not ranked |
| Mar 2021 | 1.6% of 61 movements |
| Apr 2021 | 14.3% of 140 movements |
| May 2021 | 3.3% of 213 movements |
| Jun 2021 | 3.4% of 321 movements |
| Jul 2021 | 7.9% of 478 movements |
| Aug 2021 | 11.3% of 654 movements |
| Sep 2021 | 9.0% of 951 movements |
| Oct 2021 | 9.7% of 1,189 movements |
| Nov 2021 | 5.0% of 1,231 movements |
| Dec 2021 | 13.8% of 1,042 movements |
| Jan 2022 | 10.0% of 711 movements |
| Feb 2022 | 17.5% of 1,014 movements |
| Mar 2022 | 10.9% of 1,548 movements |
| Apr 2022 | 16.9% of 1,979 movements |
| May 2022 | 18.9% of 2,269 movements |
| Jun 2022 | 34.0% of 2,207 movements |
| Jul 2022 | 34.6% of 2,088 movements |
| Aug 2022 | 23.2% of 2,060 movements |
| Sep 2022 | 26.6% of 2,157 movements |
| Oct 2022 | 15.3% of 2,142 movements |
| Nov 2022 | 16.4% of 2,171 movements |
| Dec 2022 | 33.6% of 1,964 movements |
| Jan 2023 | 11.9% of 1,951 movements |
| Feb 2023 | 15.5% of 1,900 movements |
| Mar 2023 | 26.4% of 2,173 movements |
| Apr 2023 | 19.6% of 2,068 movements |
| May 2023 | 19.8% of 2,285 movements |
| Jun 2023 | 33.6% of 2,241 movements |
| Jul 2023 | 27.7% of 2,008 movements |
| Aug 2023 | 25.0% of 2,099 movements |
| Sep 2023 | 28.6% of 2,112 movements |
| Oct 2023 | 26.6% of 2,265 movements |
| Nov 2023 | 17.6% of 2,175 movements |
| Dec 2023 | 27.1% of 1,920 movements |
| Jan 2024 | 20.5% of 1,825 movements |
| Feb 2024 | 11.4% of 1,991 movements |
| Mar 2024 | 15.5% of 2,134 movements |
| Apr 2024 | 15.4% of 2,106 movements |
| May 2024 | 22.2% of 2,206 movements |
| Jun 2024 | 25.8% of 2,012 movements |
| Jul 2024 | 30.8% of 2,023 movements |
| Aug 2024 | 23.0% of 1,932 movements |
| Sep 2024 | 27.5% of 2,076 movements |
| Oct 2024 | 21.0% of 2,185 movements |
| Nov 2024 | 22.3% of 2,003 movements |
| Dec 2024 | 26.5% of 1,866 movements |
| Jan 2025 | 18.8% of 1,750 movements |
| Feb 2025 | 10.6% of 1,780 movements |
| Mar 2025 | 12.7% of 2,062 movements |
| Apr 2025 | 10.0% of 2,044 movements |
| May 2025 | 15.8% of 2,086 movements |
| Jun 2025 | 22.4% of 2,101 movements |
| Jul 2025 | 28.4% of 2,065 movements |
| Aug 2025 | 22.8% of 1,986 movements |
| Sep 2025 | 29.7% of 2,128 movements |
| Oct 2025 | 18.9% of 2,208 movements |
| Nov 2025 | 11.3% of 1,954 movements |
| Dec 2025 | 18.9% of 1,906 movements |
| Jan 2026 | 18.7% of 1,673 movements |
| Feb 2026 | 15.5% of 1,777 movements |
| Mar 2026 | 20.8% of 2,083 movements |
| Apr 2026 | 12.8% of 1,925 movements |
| May 2026 | 20.7% of 1,887 movements |
| Jun 2026 | 31.1% of 1,975 movements |
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
What did the big disruptions do here?
Each event is compared with the twelve preceding calendar months and the first later return to baseline.
A worse month is not proof the named event caused it. The open data carry no delay-cause field. Recovery is observed for at most eight subsequent months.
| Event | Direction | Disruption that month | Baseline before | Return to baseline |
|---|---|---|---|---|
| Pandemic regime · Jun 2020 | Arrivals | suppressed: fewer than twenty movements | no complete baseline | not enough data: needs a complete baseline and a publishable event month |
| Pandemic regime · Jun 2020 | Departures | suppressed: fewer than twenty movements | no complete baseline | not enough data: needs a complete baseline and a publishable event month |
| Summer 2022 breakdown · Jul 2022 | Arrivals | 34.6% of 2,088 movements | 13.7% across 15,273 flights | returned after 6 months |
| Summer 2022 breakdown · Jul 2022 | Departures | 57.7% of 2,100 movements | 19.8% across 15,354 flights | returned after 6 months |
| NATS system failure · Aug 2023 | Arrivals | 25.0% of 2,099 movements | 22.5% across 25,120 flights | returned after 3 months |
| NATS system failure · Aug 2023 | Departures | 36.4% of 2,103 movements | 33.5% across 25,241 flights | returned after 3 months |
| Heathrow fire closure · Mar 2025 | Arrivals | 12.7% of 2,062 movements | 21.6% across 24,073 flights | returned the next month |
| Heathrow fire closure · Mar 2025 | Departures | 19.8% of 2,065 movements | 31.8% across 24,224 flights | returned the next month |
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
Which time of year has been hardest?
Highest median: Jun, 31.1% across 7 months. Lowest median: Feb, 15.5% across 7 months.
Even the same calendar month differs across years. This is a record, not a forecast; pandemic years are excluded from the summaries.
Each cell is one calendar month of one year; the number is the share of that month’s arrivals that were disrupted. Darker means worse. A blank cell means no published data, not zero.
Month-by-month table: median, observed range and sample
| Month | Median | Observed range | Sample |
|---|---|---|---|
| Jan | 16.4% | 10.0–20.5% | 7 months, 14,058 flights |
| Feb | 15.5% | 10.6–26.6% | 7 months, 14,686 flights |
| Mar | 20.8% | 10.9–26.4% | 7 months, 16,840 flights |
| Apr | 16.9% | 10.0–22.9% | 7 months, 16,752 flights |
| May | 20.7% | 15.8–100.0% | 7 months, 14,240 flights |
| Jun | 31.1% | 22.4–100.0% | 7 months, 13,993 flights |
| Jul | 29.6% | 26.6–100.0% | 6 months, 11,638 flights |
| Aug | 23.1% | 19.4–100.0% | 6 months, 11,355 flights |
| Sep | 28.0% | 17.4–100.0% | 6 months, 11,772 flights |
| Oct | 19.9% | 15.3–100.0% | 6 months, 12,324 flights |
| Nov | 19.9% | 11.3–100.0% | 6 months, 8,444 flights |
| Dec | 30.3% | 18.9–100.0% | 6 months, 7,736 flights |
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
Every published route from this airport
The published route directory contains 14 routes. The first table slice is below; continue through the linked directory pages for every route.
The airline table uses this carrier on each route; airport and country tables combine carriers. Each figure is arrivals into its UK airport. Only sufficiently large exact samples enter the ordered comparison.
| Route | Disruption | Cancellations | Sample flag |
|---|---|---|---|
| London City ↔ Milan (Linate) | 10.9% of 2,334 movements | 0.9% of 2,334 movements | descriptive comparison |
| London City ↔ Belfast City (George Best) | 13.1% of 765 movements | 2.0% of 765 movements | descriptive comparison |
| London City ↔ Glasgow | 14.7% of 1,391 movements | 1.6% of 1,391 movements | descriptive comparison |
| London City ↔ Dublin | 15.8% of 1,704 movements | 1.8% of 1,704 movements | descriptive comparison |
| London City ↔ Amsterdam | 16.7% of 3,758 movements | 2.8% of 3,758 movements | descriptive comparison |
| London City ↔ Edinburgh | 16.9% of 2,032 movements | 1.4% of 2,032 movements | descriptive comparison |
| London City ↔ Rotterdam | 19.3% of 875 movements | 2.3% of 875 movements | descriptive comparison |
| London City ↔ Frankfurt Main | 19.9% of 1,133 movements | 2.9% of 1,133 movements | descriptive comparison |
| London City ↔ Guernsey | 20.4% of 506 movements | 6.1% of 506 movements | descriptive comparison |
| London City ↔ Luxembourg | 23.5% of 1,565 movements | 2.2% of 1,565 movements | descriptive comparison |
| London City ↔ Zurich | 24.8% of 1,990 movements | 1.4% of 1,990 movements | descriptive comparison |
| London City ↔ Berlin Brandenburg | 25.2% of 1,091 movements | 2.5% of 1,091 movements | descriptive comparison |
| London City ↔ Ibiza | 27.8% of 547 movements | 0.9% of 547 movements | descriptive comparison |
| London City ↔ Florence | 44.0% of 679 movements | 3.4% of 679 movements | descriptive comparison |
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
Airlines at this airport
9 published groups have enough arrivals to describe.
These operations are not matched for season, aircraft or time of day. The table makes no causal comparison.
| Airline | Disruption | Sample flag |
|---|---|---|
| Air Dolomiti | 19.0% of 673 movements | descriptive comparison |
| Aurigny Air Services | 20.4% of 506 movements | descriptive comparison |
| BA Cityflyer Ltd | 23.5% of 14,901 movements | descriptive comparison |
| Italia Traspoto Aereo | 8.1% of 1,951 movements | descriptive comparison |
| KLM | 15.1% of 2,194 movements | descriptive comparison |
| Loganair Ltd | 18.5% of 399 movements | descriptive comparison |
| Lot-Polish Airlines | 14.6% of 192 movements | descriptive comparison |
| Luxair | 23.5% of 1,565 movements | descriptive comparison |
| Swiss Airlines | 20.5% of 1,185 movements | descriptive comparison |
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
Arrivals vs departures
21.0% of 23,567 movements arrivals were disrupted, against 31.3% of 23,687 movements departures.
The directions have separate denominators. A departure delay does not establish late arrival at the final destination; legal conditions differ by direction and carrier.
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
Routes that no longer operate from here
64 routes appear in the archive but have no movements in the latest published month.
No commercial closure date or cause is implied. A route may be seasonal or restart in future data; the date is its last observed active month.
Every historical route and its last active month
| Historical route | Last active month |
|---|---|
| LCY ↔ VIENNA | May 2026 |
| LCY ↔ LEIPZIG | May 2026 |
| LCY ↔ BUDAPEST | May 2026 |
| LCY ↔ PISA | Apr 2026 |
| LCY ↔ NEWCASTLE | Apr 2026 |
| LCY ↔ INNSBRUCK | Apr 2026 |
| LCY ↔ GENEVA | Apr 2026 |
| LCY ↔ CHAMBERY | Apr 2026 |
| LCY ↔ BOURNEMOUTH | Apr 2026 |
| LCY ↔ VILNIUS | Mar 2026 |
| LCY ↔ SOUTHAMPTON | Mar 2026 |
| LCY ↔ ROME-FIUMICINO | Mar 2026 |
| LCY ↔ NORWICH | Mar 2026 |
| LCY ↔ COLOGNE-BONN | Mar 2026 |
| LCY ↔ HAWARDEN | Feb 2026 |
| LCY ↔ BOLOGNA | Jan 2026 |
| LCY ↔ BILBAO | Oct 2025 |
| LCY ↔ SALZBURG | Aug 2025 |
| LCY ↔ GENOA | Jun 2025 |
| LCY ↔ BIARRITZ | Apr 2025 |
| LCY ↔ PRAGUE | Mar 2025 |
| LCY ↔ BILLUND | Dec 2024 |
| LCY ↔ MANCHESTER | Oct 2024 |
| LCY ↔ MIKONOS | Sep 2024 |
| LCY ↔ DUSSELDORF | Jun 2024 |
| LCY ↔ ANTWERP | May 2024 |
| LCY ↔ LYON | Dec 2023 |
| LCY ↔ QUIMPER | Sep 2023 |
| LCY ↔ JERSEY | Sep 2023 |
| LCY ↔ STANSTED | Jun 2023 |
| LCY ↔ GATWICK | Jun 2023 |
| LCY ↔ DUNDEE | May 2023 |
| LCY ↔ SUMBURGH | Apr 2023 |
| LCY ↔ KIRKWALL | Apr 2023 |
| LCY ↔ ABERDEEN | Jan 2023 |
| LCY ↔ MILAN-MALPENSA | Oct 2022 |
| LCY ↔ THIRA-SANTORINI | Sep 2022 |
| LCY ↔ MAHON | Sep 2022 |
| LCY ↔ LIVERPOOL-JOHN-LENNON | Sep 2022 |
| LCY ↔ GIBRALTAR | Sep 2021 |
| LCY ↔ BUCHAREST-OTOPENI | Sep 2021 |
| LCY ↔ BERLIN-TEGEL | Oct 2020 |
| LCY ↔ TEESSIDE-INTERNATIONAL-AIRPORT | Aug 2020 |
| LCY ↔ WARSAW-CHOPIN | Mar 2020 |
| LCY ↔ NEW-YORK-JF-KENNEDY | Mar 2020 |
| LCY ↔ MUNICH | Mar 2020 |
| LCY ↔ EXETER | Mar 2020 |
| LCY ↔ ALTENRHEIN | Mar 2020 |
| LCY ↔ SION | Feb 2020 |
| LCY ↔ BRUSSELS | Jan 2020 |
| LCY ↔ GRANADA | Aug 2019 |
| LCY ↔ VENICE | Jul 2019 |
| LCY ↔ LISBON | Jun 2019 |
| LCY ↔ PARIS-ORLY | May 2019 |
| LCY ↔ OPORTO-PORTUGAL | May 2019 |
| LCY ↔ KEFLAVIK | Mar 2019 |
| LCY ↔ BIRMINGHAM | Oct 2018 |
| LCY ↔ SHANNON | Sep 2018 |
| LCY ↔ RENNES | Sep 2018 |
| LCY ↔ DINARD | Sep 2018 |
| LCY ↔ BERNE | Sep 2018 |
| LCY ↔ OSTEND | Jul 2018 |
| LCY ↔ SAARBRUCKEN | Jun 2018 |
| LCY ↔ HUMBERSIDE | Mar 2018 |
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
Facts about this record
London City appears from Jan 2018 to Jun 2026 with 169,999 arrivals.
The bounds describe the published record, not every commercial service. Final point is not necessarily a nonstop destination.
Archive route pairs: 105.
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
What this data cannot tell you
Delay cause, individual passenger experience, commercial decisions and future performance are not established here.
Also absent are aircraft type, within-month time-of-day splits and cancellations made ahead of the short-notice reporting window.
0 operations (0.00%) excluded because their published percentages could not be reconciled to whole numbers. Excluded operations enter neither the numerator nor the denominator. Outcome figures and comparisons are unavailable when the excluded share exceeds fifteen percent.
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
Quick answers
These answers use the same populations and window as the tables above.
Every percentage retains its denominator.
How disrupted are these arrivals?
21.0% of 23,567 movements over July 2025 to June 2026.
How often are they cancelled?
2.1% of 23,567 movements at short notice.
How late is late?
23.8–58.9 minutes; delayed denominator 4,455–10,053
Are services improving?
The monthly line records past changes; it is not a forecast or a causal comparison.
Which routes are compared?
The route table uses separately identified UK airport and final-point pairs, with small samples flagged.
Does this cover my flight?
Only published aggregate movements; the circumstances of any individual flight are unknown.
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
How this was calculated
Source: CAA punctuality statistics · snapshot 17/08/2026 10:24 · method route-record-v2.1 · Versioned claims, formulas and entity mapping.
Integer bucket counts are recovered from rounding intervals over D=M+C+U with their sum constrained to M. Ambiguous counts remain ranges; failed reconciliation is quarantined.
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
Your trip has already gone wrong
The monthly line and events table show whether your month was typical or unusual in the published record.
Nothing here decides an individual case or what a passenger may be owed.
CAA: the official route to complainDefinitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.