UK FLIGHT DELAY INDEX

derived from CAA punctuality statistics for UK reporting airports

How often are these flights late or cancelled?

LCY ↔ BELFAST CITY GEORGE BEST

In the twelve months from July 2025 to June 2026, 13.1% of 765 movements arriving into LCY were disrupted — that is, they landed more than fifteen minutes late or were cancelled at short notice.

Put the other way round, 86.9% of 765 movements arrived on time by the industry's fifteen-minute standard. Severe delays were rarer: about one arrival in every 765 crossed the three-hour mark. Lower is better on every figure on this page. These numbers describe what happened on the route; they are not a prediction for any individual flight.

Definitions, denominators and limits
  • “Disrupted” means an arrival more than fifteen minutes late or a short-notice cancellation. The denominator is operated movements plus short-notice cancellations.
  • Arrivals into the UK airport only; all published carriers.
  • Crossing three hours is one condition for compensation, but monthly data cannot establish any individual passenger’s rights.
  • Delay cause is not published in the open data.
  • Source: CAA punctuality statistics · snapshot 17/08/2026 10:24 · method route-record-v2.1.

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

In the twelve months from July 2025 to June 2026, 13.1% of 765 movements were disrupted and 2.0% of 765 movements were cancelled at short notice.

When a flight was late, it was typically late by the range shown below. The delay is given as a range, not a single number, because the regulator rounds its published percentages and never says how many flights landed exactly on time.

Disruption shareShort-notice cancellationsAverage delay among delayed flights only — boundsOperations
13.1% of 765 movements2.0% of 765 movements23.9–62.2 min; N of delayed flights=85–190765
Definitions, denominators and limits

The bounds account for CAA rounding and the unknown number of zero delays. A point average across all operated movements, including punctual ones, would answer a different question and is not used here.

When it is late, how late is it?

Most delays here are short. The ladder below shows how many arrivals crossed each threshold, from a quarter of an hour up to six hours; each rung can only be smaller than the one above it.

Cancellations are counted separately: 2.0% of 765 movements. “One in N” means how many arrivals you would typically see between events at that level.

Delay threshold ladder; count and share of known operations15 min11.1%30 min6.3%60 min2.7%120 min0.7%180 min0.1%360 min0.0%
Delay ladder table: share, movements and one-in-N
DelayShare and nMovementsOne delay in every N operations
>15 min11.1% of 765 movements859.0
>30 min6.3% of 765 movements4815.9
>60 min2.7% of 765 movements2136.4
>120 min0.7% of 765 movements5153.0
>180 min0.1% of 765 movements1765.0
>360 minno events in 765 movements0no observed events, which is not zero risk
Definitions, denominators and limits

CAA counts delays strictly greater than each threshold, so exactly three hours is inseparable from the previous bucket. The ladder describes the archive, not a forecast.

Slightly late, or occasionally a disaster?

When this route runs late, it is usually only a little late: big blow-ups are rarer here than on the typical UK route.

The histogram below counts every recorded arrival, from more than fifteen minutes early through to more than six hours late. A tall bar near the middle and a thin right-hand tail is the healthy shape.

Nine delay buckets, minutes; share of all recorded operations>15 early22128.9%15–1 early33944.3%0–15 late10513.7%16–30374.8%31–60273.5%61…120162.1%121…18040.5%181…36010.1%>36000.0%D=765
Definitions, denominators and limits

Ratio of the long tail to sixteen-to-sixty-minute delays: 0.0156; corpus median 0.0217; 2056 routes in the corpus. The shape is compared conditionally among delays; the class name does not measure absolute frequency. Histogram counts and shares cover all recorded operations including unmatched records; reconstructed uniquely.

Has this route got better or worse since 2018?

Best month: Jun 2021, no events in 50 movements. Worst month: Apr 2018, 30.2% of 96 movements.

The line traces every month in the archive; lower is better. Gaps are months with no published data, never zeros. The 2020 and 2021 readings reflect the pandemic, not normal service.

Monthly disruption share; gaps mean no published dataJan 2018: 13.0%; sample: 922018Feb 2018: 16.3%; sample: 92Mar 2018: 20.8%; sample: 96Apr 2018: 30.2%; sample: 96May 2018: 18.8%; sample: 144Jun 2018: 22.4%; sample: 147Jul 2018: 20.4%; sample: 147Aug 2018: 14.0%; sample: 143Sep 2018: 12.5%; sample: 144Oct 2018: 14.7%; sample: 156Nov 2018: suppressed: fewer than twenty movements×Dec 2018: suppressed: fewer than twenty movements×Jan 2019: 10.8%; sample: 1482019Feb 2019: 23.0%; sample: 135Mar 2019: 19.3%; sample: 145Apr 2019: 14.0%; sample: 150May 2019: suppressed: fewer than twenty movements×Jun 2019: suppressed: fewer than twenty movements×Jul 2019: suppressed: fewer than twenty movements×Aug 2019: suppressed: fewer than twenty movements×Sep 2019: suppressed: fewer than twenty movements×Oct 2019: suppressed: fewer than twenty movements×Nov 2019: suppressed: fewer than twenty movements×Dec 2019: suppressed: fewer than twenty movements×Jan 2020: 6.9%; sample: 1302020Feb 2020: 11.3%; sample: 133Mar 2020: 38.2%; sample: 34Apr 2020: suppressed: fewer than twenty movements×May 2020: suppressed: fewer than twenty movements×Jun 2020: suppressed: fewer than twenty movements×Jul 2020: suppressed: fewer than twenty movements×Aug 2020: suppressed: fewer than twenty movements×Sep 2020: suppressed: fewer than twenty movements×Oct 2020: 0.0%; sample: 30Nov 2020: suppressed: fewer than twenty movements×Dec 2020: suppressed: fewer than twenty movements×Jan 2021: suppressed: fewer than twenty movements×2021Feb 2021: suppressed: fewer than twenty movements×Mar 2021: suppressed: fewer than twenty movements×Apr 2021: 8.0%; sample: 25May 2021: 0.0%; sample: 30Jun 2021: 0.0%; sample: 50Jul 2021: 10.5%; sample: 57Aug 2021: 7.0%; sample: 57Sep 2021: 5.6%; sample: 71Oct 2021: 1.3%; sample: 78Nov 2021: 1.3%; sample: 78Dec 2021: 1.4%; sample: 74Jan 2022: 2.4%; sample: 412022Feb 2022: 6.0%; sample: 67Mar 2022: 6.1%; sample: 82Apr 2022: 4.1%; sample: 74May 2022: 2.5%; sample: 79Jun 2022: 21.6%; sample: 74Jul 2022: 24.6%; sample: 57Aug 2022: 9.7%; sample: 62Sep 2022: 8.1%; sample: 74Oct 2022: 12.2%; sample: 74Nov 2022: 11.7%; sample: 77Dec 2022: 18.7%; sample: 75Jan 2023: 6.3%; sample: 632023Feb 2023: 14.1%; sample: 71Mar 2023: 9.3%; sample: 86Apr 2023: 3.6%; sample: 83May 2023: 15.3%; sample: 98Jun 2023: 23.1%; sample: 78Jul 2023: 6.7%; sample: 60Aug 2023: 6.6%; sample: 61Sep 2023: 15.0%; sample: 80Oct 2023: 10.3%; sample: 87Nov 2023: 10.4%; sample: 77Dec 2023: 12.5%; sample: 72Jan 2024: 12.5%; sample: 482024Feb 2024: 3.2%; sample: 63Mar 2024: 6.8%; sample: 74Apr 2024: 10.3%; sample: 68May 2024: 13.7%; sample: 73Jun 2024: 10.7%; sample: 56Jul 2024: 19.6%; sample: 56Aug 2024: 12.3%; sample: 57Sep 2024: 14.8%; sample: 61Oct 2024: 9.2%; sample: 76Nov 2024: 24.0%; sample: 75Dec 2024: 24.3%; sample: 70Jan 2025: 20.0%; sample: 502025Feb 2025: 7.0%; sample: 57Mar 2025: 13.2%; sample: 76Apr 2025: 7.0%; sample: 71May 2025: 4.4%; sample: 68Jun 2025: 2.0%; sample: 50Jul 2025: 14.3%; sample: 56Aug 2025: 8.7%; sample: 46Sep 2025: 20.9%; sample: 67Oct 2025: 12.8%; sample: 78Nov 2025: 5.3%; sample: 75Dec 2025: 18.8%; sample: 69Jan 2026: 10.2%; sample: 492026Feb 2026: 10.5%; sample: 57Mar 2026: 21.1%; sample: 76Apr 2026: 6.9%; sample: 72May 2026: 7.5%; sample: 67Jun 2026: 18.9%; sample: 53Pandemic regime Jun 2020Summer 2022 breakdown Jul 2022NATS system failure Aug 2023Heathrow fire closure Mar 2025100%0%
Every month since 2018, including gaps and suppressed cells
MonthDisruption on arrivals
Jan 201813.0% of 92 movements
Feb 201816.3% of 92 movements
Mar 201820.8% of 96 movements
Apr 201830.2% of 96 movements
May 201818.8% of 144 movements
Jun 201822.4% of 147 movements
Jul 201820.4% of 147 movements
Aug 201814.0% of 143 movements
Sep 201812.5% of 144 movements
Oct 201814.7% of 156 movements
Nov 2018suppressed: fewer than twenty movements
Dec 2018suppressed: fewer than twenty movements
Jan 201910.8% of 148 movements
Feb 201923.0% of 135 movements
Mar 201919.3% of 145 movements
Apr 201914.0% of 150 movements
May 2019suppressed: fewer than twenty movements
Jun 2019suppressed: fewer than twenty movements
Jul 2019suppressed: fewer than twenty movements
Aug 2019suppressed: fewer than twenty movements
Sep 2019suppressed: fewer than twenty movements
Oct 2019suppressed: fewer than twenty movements
Nov 2019suppressed: fewer than twenty movements
Dec 2019suppressed: fewer than twenty movements
Jan 20206.9% of 130 movements
Feb 202011.3% of 133 movements
Mar 202038.2% of 34 movements — small sample, not ranked
Apr 2020suppressed: fewer than twenty movements
May 2020suppressed: fewer than twenty movements
Jun 2020suppressed: fewer than twenty movements
Jul 2020suppressed: fewer than twenty movements
Aug 2020suppressed: fewer than twenty movements
Sep 2020suppressed: fewer than twenty movements
Oct 2020no events in 30 movements — small sample, not ranked
Nov 2020suppressed: fewer than twenty movements
Dec 2020suppressed: fewer than twenty movements
Jan 2021suppressed: fewer than twenty movements
Feb 2021suppressed: fewer than twenty movements
Mar 2021suppressed: fewer than twenty movements
Apr 20218.0% of 25 movements — small sample, not ranked
May 2021no events in 30 movements — small sample, not ranked
Jun 2021no events in 50 movements
Jul 202110.5% of 57 movements
Aug 20217.0% of 57 movements
Sep 20215.6% of 71 movements
Oct 20211.3% of 78 movements
Nov 20211.3% of 78 movements
Dec 20211.4% of 74 movements
Jan 20222.4% of 41 movements — small sample, not ranked
Feb 20226.0% of 67 movements
Mar 20226.1% of 82 movements
Apr 20224.1% of 74 movements
May 20222.5% of 79 movements
Jun 202221.6% of 74 movements
Jul 202224.6% of 57 movements
Aug 20229.7% of 62 movements
Sep 20228.1% of 74 movements
Oct 202212.2% of 74 movements
Nov 202211.7% of 77 movements
Dec 202218.7% of 75 movements
Jan 20236.3% of 63 movements
Feb 202314.1% of 71 movements
Mar 20239.3% of 86 movements
Apr 20233.6% of 83 movements
May 202315.3% of 98 movements
Jun 202323.1% of 78 movements
Jul 20236.7% of 60 movements
Aug 20236.6% of 61 movements
Sep 202315.0% of 80 movements
Oct 202310.3% of 87 movements
Nov 202310.4% of 77 movements
Dec 202312.5% of 72 movements
Jan 202412.5% of 48 movements — small sample, not ranked
Feb 20243.2% of 63 movements
Mar 20246.8% of 74 movements
Apr 202410.3% of 68 movements
May 202413.7% of 73 movements
Jun 202410.7% of 56 movements
Jul 202419.6% of 56 movements
Aug 202412.3% of 57 movements
Sep 202414.8% of 61 movements
Oct 20249.2% of 76 movements
Nov 202424.0% of 75 movements
Dec 202424.3% of 70 movements
Jan 202520.0% of 50 movements
Feb 20257.0% of 57 movements
Mar 202513.2% of 76 movements
Apr 20257.0% of 71 movements
May 20254.4% of 68 movements
Jun 20252.0% of 50 movements
Jul 202514.3% of 56 movements
Aug 20258.7% of 46 movements — small sample, not ranked
Sep 202520.9% of 67 movements
Oct 202512.8% of 78 movements
Nov 20255.3% of 75 movements
Dec 202518.8% of 69 movements
Jan 202610.2% of 49 movements — small sample, not ranked
Feb 202610.5% of 57 movements
Mar 202621.1% of 76 movements
Apr 20266.9% of 72 movements
May 20267.5% of 67 movements
Jun 202618.9% of 53 movements

What did the big disruptions actually do here?

Each named event below is shown against this route’s own baseline for the twelve months before it, and against how long the route took to get back to that baseline.

A month worse than baseline is not proof the named event caused it: the open data carry no delay-cause field at all. Some events sit near the edge of the archive, which limits how long a recovery can be traced.

EventDirectionDisruption that monthBaseline beforeReturn to baseline
Pandemic regime · Jun 2020Arrivalssuppressed: fewer than twenty movementsno complete baselinenot enough data: needs a complete baseline and a publishable event month
Pandemic regime · Jun 2020Departuressuppressed: fewer than twenty movementsno complete baselinenot enough data: needs a complete baseline and a publishable event month
Summer 2022 breakdown · Jul 2022Arrivals24.6% of 57 movements5.8% across 832 flightsstill above it 8 months later
Summer 2022 breakdown · Jul 2022Departures49.1% of 57 movements10.0% across 833 flightsstill above it 8 months later
NATS system failure · Aug 2023Arrivals6.6% of 61 movements11.6% across 901 flightsreturned after 2 months
NATS system failure · Aug 2023Departures26.2% of 61 movements23.0% across 905 flightsreturned after 2 months
Heathrow fire closure · Mar 2025Arrivals13.2% of 76 movements14.4% across 773 flightsreturned the next month
Heathrow fire closure · Mar 2025Departures14.5% of 76 movements22.4% across 776 flightsreturned the next month
Definitions, denominators and limits

The baseline is the unweighted mean share over the twelve preceding calendar months. The return window is the following eight months, up to the end of the archive. Return means the first observed value at or below the baseline; it is not the duration of the disruption itself. If the event month is already below the baseline, counting still starts the month after. Gaps and suppressed cells are not treated as zeros or as recovery.

Which time of year has historically been hardest?

June has historically been the hardest month on this route: in a typical June, 20.2% of arrivals were disrupted, measured across 6 Junes in the archive. April has been the calmest, at 7.0% across 7 Aprils.

Even June has ranged from 2.0% to 23.1% in different years, so this is a record of what happened, not a forecast of what will. Lower is better throughout.

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.

Seasonality: calendar month by year; share and nJanFebMarAprMayJunJulAugSepOctNovDec201910.8% of 148 movements23.0% of 135 movements19.3% of 145 movements14.0% of 150 movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movements20206.9% of 130 movements11.3% of 133 movements38.2% of 34 movements †suppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementsno events in 30 movements †suppressed: fewer than twenty movementssuppressed: fewer than twenty movements2021suppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movements8.0% of 25 movements †no events in 30 movements †no events in 50 movements10.5% of 57 movements7.0% of 57 movements5.6% of 71 movements1.3% of 78 movements1.3% of 78 movements1.4% of 74 movements20222.4% of 41 movements †6.0% of 67 movements6.1% of 82 movements4.1% of 74 movements2.5% of 79 movements21.6% of 74 movements24.6% of 57 movements9.7% of 62 movements8.1% of 74 movements12.2% of 74 movements11.7% of 77 movements18.7% of 75 movements20236.3% of 63 movements14.1% of 71 movements9.3% of 86 movements3.6% of 83 movements15.3% of 98 movements23.1% of 78 movements6.7% of 60 movements6.6% of 61 movements15.0% of 80 movements10.3% of 87 movements10.4% of 77 movements12.5% of 72 movements202412.5% of 48 movements †3.2% of 63 movements6.8% of 74 movements10.3% of 68 movements13.7% of 73 movements10.7% of 56 movements19.6% of 56 movements12.3% of 57 movements14.8% of 61 movements9.2% of 76 movements24.0% of 75 movements24.3% of 70 movements202520.0% of 50 movements7.0% of 57 movements13.2% of 76 movements7.0% of 71 movements4.4% of 68 movements2.0% of 50 movements14.3% of 56 movements8.7% of 46 movements †20.9% of 67 movements12.8% of 78 movements5.3% of 75 movements18.8% of 69 movements202610.2% of 49 movements †10.5% of 57 movements21.1% of 76 movements6.9% of 72 movements7.5% of 67 movements18.9% of 53 movementsno datano datano datano datano datano data
Month-by-month table: median, observed range and sample
MonthMedianObserved rangeSample
Jan10.8%2.4–20.0%7 months, 491 flights
Feb10.5%3.2–23.0%7 months, 542 flights
Mar13.2%6.1–21.1%7 months, 635 flights
Apr7.0%3.6–30.2%7 months, 614 flights
May10.6%2.5–18.8%6 months, 529 flights
Jun20.2%2.0–23.1%6 months, 458 flights
Jul19.6%6.7–24.6%5 months, 376 flights
Aug9.7%6.6–14.0%5 months, 369 flights
Sep14.8%8.1–20.9%5 months, 426 flights
Oct12.2%9.2–14.7%5 months, 471 flights
Nov11.0%5.3–24.0%4 months, 304 flights
Dec18.8%12.5–24.3%4 months, 286 flights
Definitions, denominators and limits

The matrix shows the last eight calendar years, including an incomplete final year; the start of the archive is kept in the history above. Seasonal summaries use the whole available archive, excluding the pandemic regime 2020–2021; this is an observed range, not a forecast. Zero events, missing data and suppressed cells are marked separately. † marks a small sample, described but not ranked. For ranges the colour follows the upper bound.

Which airline has the better record here?

Only one carrier published enough flights here to report: Ba Cityflyer Ltd, 13.1% of 765 movements disrupted.

Figures cover arrivals, July 2025 to June 2026; lower is better in every column. Carriers with fewer than twenty published flights are suppressed rather than shown as zero. The page makes no ranking: the operations behind these shares are not matched for aircraft, time of day or season.

Observed disruption share by optionBa Cityflyer13.1% of 765 flights
Airline comparison table: operations, cancellations, three-hour delays and data quality
AirlineOperationsDisruptionCancellations>180 minData quality
Ba Cityflyer76513.1% of 765 movements2.0% of 765 movements0.1% of 765 movementsdescriptive comparison
Flybesuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed

The noise check is a descriptive approximation assuming independent operations. Delay correlation and mix differences are not estimated; no ranking is derived.

Would another UK airport have been better?

Among UK airports flying to this city with enough flights to publish, LPL had the lowest disruption share at 15.3% of 404 movements and CWL the highest at 29.2% of 336 movements. This route sits at 13.1% of 765 movements.

Each figure is arrivals into that UK airport, all carriers combined, over the same twelve months. It is a historical record, not a recommendation about where to fly from, and it says nothing about getting to or from each airport on the ground.

Observed disruption share by optionAbz ↔ Belfast-City-George-Best16.7% of 252 flightsBhx ↔ Belfast-City-George-Best22.7% of 2,005 flightsBrs ↔ Belfast-City-George-Best22.1% of 190 flightsCwl ↔ Belfast-City-George-Best29.2% of 336 flightsEdi ↔ Belfast-City-George-Best26.8% of 1,241 flightsEma ↔ Belfast-City-George-Best17.7% of 294 flightsExt ↔ Belfast-City-George-Best21.6% of 97 flightsGla ↔ Belfast-City-George-Best26.8% of 645 flights
Airport comparison table: operations, cancellations, three-hour delays and data quality
Other UK airport to the same cityOperationsDisruptionCancellations>180 minData quality
Abz ↔ Belfast-City-George-Best25216.7% of 252 movements1.6% of 252 movements0.8% of 252 movementsdescriptive comparison
Bfs ↔ Belfast-City-George-Bestsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Bhx ↔ Belfast-City-George-Best2,00522.7% of 2,005 movements3.7% of 2,005 movements0.9% of 2,005 movementsdescriptive comparison
Boh ↔ Belfast-City-George-Bestsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Brs ↔ Belfast-City-George-Best19022.1% of 190 movements0.5% of 190 movementsno events in 190 movementsdescriptive comparison
Cwl ↔ Belfast-City-George-Best33629.2% of 336 movements1.5% of 336 movements1.2% of 336 movementsdescriptive comparison
Doncaster-Sheffield ↔ Belfast-City-George-Bestsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Edi ↔ Belfast-City-George-Best1,24126.8% of 1,241 movements2.6% of 1,241 movements1.2% of 1,241 movementsdescriptive comparison
Ema ↔ Belfast-City-George-Best29417.7% of 294 movements1.0% of 294 movements0.7% of 294 movementsdescriptive comparison
Ext ↔ Belfast-City-George-Best9721.6% of 97 movements1.0% of 97 movements1.0% of 97 movementsdescriptive comparison
Gla ↔ Belfast-City-George-Best64526.8% of 645 movements1.4% of 645 movements1.6% of 645 movementsdescriptive comparison
Iom ↔ Belfast-City-George-Bestsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Jer ↔ Belfast-City-George-Bestsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Lba ↔ Belfast-City-George-Best1,16623.7% of 1,166 movements3.7% of 1,166 movements0.6% of 1,166 movementsdescriptive comparison
Lgw ↔ Belfast-City-George-Best1,03119.7% of 1,031 movements0.2% of 1,031 movements0.4% of 1,031 movementsdescriptive comparison
Lhr ↔ Belfast-City-George-Best2,27017.9% of 2,270 movements1.4% of 2,270 movements0.2% of 2,270 movementsdescriptive comparison
Lpl ↔ Belfast-City-George-Best40415.3% of 404 movements1.0% of 404 movements0.2% of 404 movementsdescriptive comparison
Ltn ↔ Belfast-City-George-Best32422.2% of 324 movements0.3% of 324 movementsno events in 324 movementsdescriptive comparison
Man ↔ Belfast-City-George-Best1,62826.1% of 1,628 movements2.1% of 1,628 movements1.2% of 1,628 movementsdescriptive comparison
Mme ↔ Belfast-City-George-Bestsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Ncl ↔ Belfast-City-George-Bestsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Sen ↔ Belfast-City-George-Bestsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Sou ↔ Belfast-City-George-Best87820.4% of 878 movements2.1% of 878 movements0.6% of 878 movementsdescriptive comparison
Stn ↔ Belfast-City-George-Bestsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed

Does the direction you are flying change anything?

Yes: arrivals into LCY ran 13.1% of 765 movements disrupted, departures 28.2% of 769 movements.

It matters legally as well as practically: a departure from the UK and an arrival into the UK on a UK or EU carrier fall under different conditions, and a departure delay does not establish a late arrival at your final destination.

Arrivals and departures side by side
DirectionDisruptionCancellationsOver three hours
Arrivals into LCY13.1% of 765 movements2.0% of 765 movements0.1% of 765 movements
Departures from LCY28.2% of 769 movements1.3% of 769 movementsno events in 769 movements
Definitions, denominators and limits

CAA conditions on delays and cancellations.

How many flights here crossed the three-hour mark?

The table below counts arrivals and departures that ran more than three hours late — the threshold that is one of the conditions for compensation — across the whole archive and within the last six years.

The pound figure beside each count is arithmetic, not money anyone received: it is the count multiplied by the maximum statutory amount for this distance band. Whether any of those flights actually qualified is not knowable from this data.

DirectionWindowFlights over three hoursArithmetic statutory ceiling
ArrivalsWhole archive · Jan 2018–Jun 20269 flights out of 6,4309 × £220 = £1,980
ArrivalsLast 72 months · Jul 2020–Jun 20267 flights out of 4,2907 × £220 = £1,540
DeparturesWhole archive · Jan 2018–Jun 20263 flights out of 6,4853 × £220 = £660
DeparturesLast 72 months · Jul 2020–Jun 20261 flights out of 4,3061 × £220 = £220
Definitions, denominators and limits

Full formula: the count is the sum of the two tail buckets across months, carriers and service types in one direction; the ceiling is that count multiplied by the maximum statutory amount for the distance band. The condition is: if every such delay had been the carrier's fault and a claim had been filed on every one of them.

This is conditional arithmetic over operations: passenger numbers, legal applicability and the number of claims are all unknown. For departures it is an arithmetic scenario only, because arrival at the final point is not observed. For long routes the maximum ceiling is used; any reduction in the payable amount is not calculated.

The archive window is counted from the last month of data, not from today: this is not a limitation check for an individual case. The CAA states six years for England and Wales and five for Scotland. CAA: time limits and how to complain. Information, not a legal service.

The facts about this route

Route reference table: codes, distance, frequency, archive span
FieldValue
UK airportLONDON CITY · LCY
Final point / countryBELFAST CITY (GEORGE BEST) / UNITED KINGDOM
Final point codesBHD / EGAC
Great-circle distance526 km
Maximum statutory amount for the band£220
Average operated arrivals per day2.05
Presence in the latest twelve-month windowoperations present in every month of the latest twelve-month window
First and last active monthJan 2018–Jun 2026
Months with operations in the archive91

origin_destination is the final point of the CAA service, not evidence of a nonstop connection. The distance joins the coordinates of the named airports; the actual track is unknown. Frequency describes published operations.

What this data cannot tell you

Delay cause is not published in the regulator's open data. Monthly aggregates describe a population, not a specific flight. Cells below twenty operations are suppressed; twenty to forty-nine are descriptive only and not ranked. Arrivals and departures do not add up. Cancellations are short-notice only, by the CAA definition. A movement is not the same as a scheduled flight.

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.

Data-quality counters for this route

Zero observed events does not mean zero risk. Operator coverage against the Summary file is not established in this record; comparisons are limited to the published population.

Unmatched records: 0; all recorded operations: 765; excluded by quarantine: 0.

Quick answers

How often is this route disrupted?

13.1% of 765 movements over July 2025 to June 2026. Arrivals into the UK airport; all published carriers.

How many flights are cancelled at short notice?

2.0% of 765 movements in the same window.

How many delays crossed three hours?

0.1% of 765 movements in the same window; these are observed movements, not a count of claims.

What does the delay distribution look like?

chronically slightly late. The class compares the tail with short delays across routes in the corpus.

What distance is used?

526 km, great-circle.

Can compensation entitlement be established here?

No. The cause and the circumstances of an individual flight are unknown. Official CAA conditions.

Why do some cells say "no data"?

That month is absent from the published series. Small cells carry a separate "suppressed" marker; a gap is never replaced by a zero.

How this was calculated

Dataset version, input hashes and reconstruction rules

Dataset version: 396da8dde2874f14; method route-record-v2.1.

Versioned register of every number and the entity map · Input hashes · Correction log · Reconstruction and formulas.

Reconstruction: integer counts inside the rounding bounds of shares of D, summing to M. Ambiguity is preserved as a range of feasible counts; non-convergence stays in quarantine. The map of codes and coordinates is pinned by hash alongside the data. Raw CSV files are not included in the published output.

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Reconstruction and formulas

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