UK FLIGHT DELAY INDEX

derived from CAA punctuality statistics for UK reporting airports

How often are these flights late or cancelled?

LHR ↔ ORLANDO

In the twelve months from July 2025 to June 2026, 22.4% of 626 movements arriving into LHR were disrupted — that is, they landed more than fifteen minutes late or were cancelled at short notice.

Put the other way round, 77.6% of 626 movements arrived on time by the industry's fifteen-minute standard. Severe delays were rarer: about one arrival in every 156 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, 22.4% of 626 movements were disrupted and 1.1% of 626 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
22.4% of 626 movements1.1% of 626 movements37.6–69.1 min; N of delayed flights=133–228626
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: 1.1% of 626 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 min21.2%30 min14.1%60 min7.5%120 min2.1%180 min0.6%360 min0.2%
Delay ladder table: share, movements and one-in-N
DelayShare and nMovementsOne delay in every N operations
>15 min21.2% of 626 movements1334.7
>30 min14.1% of 626 movements887.1
>60 min7.5% of 626 movements4713.3
>120 min2.1% of 626 movements1348.2
>180 min0.6% of 626 movements4156.5
>360 min0.2% of 626 movements1626.0
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?

This route runs late less often than most, but when it does go wrong it tends to go badly wrong: its long delays are heavier 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 early26442.2%15–1 early12720.3%0–15 late9515.2%16–30457.2%31–60416.5%61…120345.4%121…18091.4%181…36030.5%>36010.2%D=626
Definitions, denominators and limits

Ratio of the long tail to sixteen-to-sixty-minute delays: 0.0465; 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: Sep 2025, 7.8% of 64 movements. Worst month: Apr 2022, 67.8% of 90 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: no data×2018Feb 2018: no data×Mar 2018: no data×Apr 2018: no data×May 2018: no data×Jun 2018: no data×Jul 2018: no data×Aug 2018: no data×Sep 2018: no data×Oct 2018: suppressed: fewer than twenty movements×Nov 2018: no data×Dec 2018: suppressed: fewer than twenty movements×Jan 2019: suppressed: fewer than twenty movements×2019Feb 2019: no data×Mar 2019: suppressed: fewer than twenty movements×Apr 2019: no data×May 2019: no data×Jun 2019: no data×Jul 2019: no data×Aug 2019: no data×Sep 2019: no data×Oct 2019: suppressed: fewer than twenty movements×Nov 2019: suppressed: fewer than twenty movements×Dec 2019: suppressed: fewer than twenty movements×Jan 2020: suppressed: fewer than twenty movements×2020Feb 2020: no data×Mar 2020: suppressed: fewer than twenty movements×Apr 2020: no data×May 2020: no data×Jun 2020: no data×Jul 2020: no data×Aug 2020: no data×Sep 2020: no data×Oct 2020: no data×Nov 2020: suppressed: fewer than twenty movements×Dec 2020: no data×Jan 2021: no data×2021Feb 2021: no data×Mar 2021: no data×Apr 2021: no data×May 2021: no data×Jun 2021: no data×Jul 2021: no data×Aug 2021: no data×Sep 2021: no data×Oct 2021: no data×Nov 2021: 64.9%; sample: 37Dec 2021: 59.7%; sample: 62Jan 2022: 40.7%; sample: 592022Feb 2022: 41.8%; sample: 55Mar 2022: 56.1%; sample: 66Apr 2022: 67.8%; sample: 90May 2022: 52.7%; sample: 93Jun 2022: 52.2%; sample: 90Jul 2022: 59.1%; sample: 93Aug 2022: 62.8%; sample: 94Sep 2022: 64.0%; sample: 86Oct 2022: 32.6%; sample: 95Nov 2022: 31.1%; sample: 74Dec 2022: 33.3%; sample: 42Jan 2023: 10.3%; sample: 292023Feb 2023: 6.9%; sample: 29Mar 2023: 16.7%; sample: 36Apr 2023: 26.2%; sample: 61May 2023: 32.7%; sample: 49Jun 2023: 48.9%; sample: 47Jul 2023: 55.9%; sample: 59Aug 2023: 32.3%; sample: 62Sep 2023: 39.2%; sample: 51Oct 2023: 15.3%; sample: 59Nov 2023: 10.0%; sample: 30Dec 2023: 29.0%; sample: 31Jan 2024: 39.4%; sample: 332024Feb 2024: 13.8%; sample: 29Mar 2024: 16.1%; sample: 31Apr 2024: 36.7%; sample: 60May 2024: 41.9%; sample: 62Jun 2024: 34.4%; sample: 61Jul 2024: 40.3%; sample: 62Aug 2024: 32.3%; sample: 62Sep 2024: 31.7%; sample: 60Oct 2024: 23.9%; sample: 67Nov 2024: 33.8%; sample: 65Dec 2024: 36.7%; sample: 49Jan 2025: 38.0%; sample: 502025Feb 2025: 9.3%; sample: 43Mar 2025: 33.3%; sample: 48Apr 2025: 13.3%; sample: 60May 2025: 23.8%; sample: 63Jun 2025: 23.3%; sample: 60Jul 2025: 32.4%; sample: 71Aug 2025: 26.3%; sample: 76Sep 2025: 7.8%; sample: 64Oct 2025: 11.5%; sample: 61Nov 2025: 19.0%; sample: 42Dec 2025: 26.7%; sample: 30Jan 2026: 16.1%; sample: 312026Feb 2026: 10.7%; sample: 28Mar 2026: 33.3%; sample: 39Apr 2026: 32.3%; sample: 62May 2026: 25.8%; sample: 62Jun 2026: 20.0%; sample: 60Pandemic 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 2018no data
Feb 2018no data
Mar 2018no data
Apr 2018no data
May 2018no data
Jun 2018no data
Jul 2018no data
Aug 2018no data
Sep 2018no data
Oct 2018suppressed: fewer than twenty movements
Nov 2018no data
Dec 2018suppressed: fewer than twenty movements
Jan 2019suppressed: fewer than twenty movements
Feb 2019no data
Mar 2019suppressed: fewer than twenty movements
Apr 2019no data
May 2019no data
Jun 2019no data
Jul 2019no data
Aug 2019no data
Sep 2019no data
Oct 2019suppressed: fewer than twenty movements
Nov 2019suppressed: fewer than twenty movements
Dec 2019suppressed: fewer than twenty movements
Jan 2020suppressed: fewer than twenty movements
Feb 2020no data
Mar 2020suppressed: fewer than twenty movements
Apr 2020no data
May 2020no data
Jun 2020no data
Jul 2020no data
Aug 2020no data
Sep 2020no data
Oct 2020no data
Nov 2020suppressed: fewer than twenty movements
Dec 2020no data
Jan 2021no data
Feb 2021no data
Mar 2021no data
Apr 2021no data
May 2021no data
Jun 2021no data
Jul 2021no data
Aug 2021no data
Sep 2021no data
Oct 2021no data
Nov 202164.9% of 37 movements — small sample, not ranked
Dec 202159.7% of 62 movements
Jan 202240.7% of 59 movements
Feb 202241.8% of 55 movements
Mar 202256.1% of 66 movements
Apr 202267.8% of 90 movements
May 202252.7% of 93 movements
Jun 202252.2% of 90 movements
Jul 202259.1% of 93 movements
Aug 202262.8% of 94 movements
Sep 202264.0% of 86 movements
Oct 202232.6% of 95 movements
Nov 202231.1% of 74 movements
Dec 202233.3% of 42 movements — small sample, not ranked
Jan 202310.3% of 29 movements — small sample, not ranked
Feb 20236.9% of 29 movements — small sample, not ranked
Mar 202316.7% of 36 movements — small sample, not ranked
Apr 202326.2% of 61 movements
May 202332.7% of 49 movements — small sample, not ranked
Jun 202348.9% of 47 movements — small sample, not ranked
Jul 202355.9% of 59 movements
Aug 202332.3% of 62 movements
Sep 202339.2% of 51 movements
Oct 202315.3% of 59 movements
Nov 202310.0% of 30 movements — small sample, not ranked
Dec 202329.0% of 31 movements — small sample, not ranked
Jan 202439.4% of 33 movements — small sample, not ranked
Feb 202413.8% of 29 movements — small sample, not ranked
Mar 202416.1% of 31 movements — small sample, not ranked
Apr 202436.7% of 60 movements
May 202441.9% of 62 movements
Jun 202434.4% of 61 movements
Jul 202440.3% of 62 movements
Aug 202432.3% of 62 movements
Sep 202431.7% of 60 movements
Oct 202423.9% of 67 movements
Nov 202433.8% of 65 movements
Dec 202436.7% of 49 movements — small sample, not ranked
Jan 202538.0% of 50 movements
Feb 20259.3% of 43 movements — small sample, not ranked
Mar 202533.3% of 48 movements — small sample, not ranked
Apr 202513.3% of 60 movements
May 202523.8% of 63 movements
Jun 202523.3% of 60 movements
Jul 202532.4% of 71 movements
Aug 202526.3% of 76 movements
Sep 20257.8% of 64 movements
Oct 202511.5% of 61 movements
Nov 202519.0% of 42 movements — small sample, not ranked
Dec 202526.7% of 30 movements — small sample, not ranked
Jan 202616.1% of 31 movements — small sample, not ranked
Feb 202610.7% of 28 movements — small sample, not ranked
Mar 202633.3% of 39 movements — small sample, not ranked
Apr 202632.3% of 62 movements
May 202625.8% of 62 movements
Jun 202620.0% of 60 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 2020Arrivalsno datano complete baselinenot enough data: needs a complete baseline and a publishable event month
Pandemic regime · Jun 2020Departuresno datano complete baselinenot enough data: needs a complete baseline and a publishable event month
Summer 2022 breakdown · Jul 2022Arrivals59.1% of 93 movementsno complete baselinenot enough data: needs a complete baseline and a publishable event month
Summer 2022 breakdown · Jul 2022Departures74.2% of 93 movementsno complete baselinenot enough data: needs a complete baseline and a publishable event month
NATS system failure · Aug 2023Arrivals32.3% of 62 movements35.1% across 701 flightsreturned after 2 months
NATS system failure · Aug 2023Departures32.3% of 62 movements36.0% across 694 flightsreturned the next month
Heathrow fire closure · Mar 2025Arrivals33.3% of 48 movements — small sample, not ranked31.3% across 672 flightsreturned the next month
Heathrow fire closure · Mar 2025Departures36.0% of 50 movements34.0% across 668 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?

July has historically been the hardest month on this route: in a typical July, 48.1% of arrivals were disrupted, measured across 4 Julys in the archive. February has been the calmest, at 10.7% across 5 Februarys.

Even July has ranged from 32.4% to 59.1% 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 nJanFebMarAprMayJunJulAugSepOctNovDec2019suppressed: fewer than twenty movementsno datasuppressed: fewer than twenty movementsno datano datano datano datano datano datasuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movements2020suppressed: fewer than twenty movementsno datasuppressed: fewer than twenty movementsno datano datano datano datano datano datano datasuppressed: fewer than twenty movementsno data2021no datano datano datano datano datano datano datano datano datano data64.9% of 37 movements †59.7% of 62 movements202240.7% of 59 movements41.8% of 55 movements56.1% of 66 movements67.8% of 90 movements52.7% of 93 movements52.2% of 90 movements59.1% of 93 movements62.8% of 94 movements64.0% of 86 movements32.6% of 95 movements31.1% of 74 movements33.3% of 42 movements †202310.3% of 29 movements †6.9% of 29 movements †16.7% of 36 movements †26.2% of 61 movements32.7% of 49 movements †48.9% of 47 movements †55.9% of 59 movements32.3% of 62 movements39.2% of 51 movements15.3% of 59 movements10.0% of 30 movements †29.0% of 31 movements †202439.4% of 33 movements †13.8% of 29 movements †16.1% of 31 movements †36.7% of 60 movements41.9% of 62 movements34.4% of 61 movements40.3% of 62 movements32.3% of 62 movements31.7% of 60 movements23.9% of 67 movements33.8% of 65 movements36.7% of 49 movements †202538.0% of 50 movements9.3% of 43 movements †33.3% of 48 movements †13.3% of 60 movements23.8% of 63 movements23.3% of 60 movements32.4% of 71 movements26.3% of 76 movements7.8% of 64 movements11.5% of 61 movements19.0% of 42 movements †26.7% of 30 movements †202616.1% of 31 movements †10.7% of 28 movements †33.3% of 39 movements †32.3% of 62 movements25.8% of 62 movements20.0% of 60 movementsno datano datano datano datano datano data
Month-by-month table: median, observed range and sample
MonthMedianObserved rangeSample
Jan38.0%10.3–40.7%5 months, 202 flights
Feb10.7%6.9–41.8%5 months, 184 flights
Mar33.3%16.1–56.1%5 months, 220 flights
Apr32.3%13.3–67.8%5 months, 333 flights
May32.7%23.8–52.7%5 months, 329 flights
Jun34.4%20.0–52.2%5 months, 318 flights
Jul48.1%32.4–59.1%4 months, 285 flights
Aug32.3%26.3–62.8%4 months, 294 flights
Sep35.4%7.8–64.0%4 months, 261 flights
Oct19.6%11.5–32.6%4 months, 282 flights
Nov25.1%10.0–33.8%4 months, 211 flights
Dec31.2%26.7–36.7%4 months, 152 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?

On the published record there is no clear winner: Virgin Atlantic International 13.8% of 80 movements, Virgin Atlantic Airways 23.8% of 542 movements. Observed shares differ; the mix of operations is not matched, so no causal conclusion follows.

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 optionVirgin Atlantic Airways23.8% of 542 flightsVirgin Atlantic International13.8% of 80 flights
Airline comparison table: operations, cancellations, three-hour delays and data quality
AirlineOperationsDisruptionCancellations>180 minData quality
British Airwayssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Delta Airlinessuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Virgin Atlantic Airways54223.8% of 542 movements1.3% of 542 movements0.7% of 542 movementsdescriptive comparison
Virgin Atlantic International8013.8% of 80 movementsno events in 80 movementsno events in 80 movementsdescriptive comparison

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, MAN had the lowest disruption share at 22.9% of 612 movements and LGW the highest at 30.9% of 826 movements. This route sits at 22.4% of 626 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 optionEdi ↔ Orlando28.1% of 64 flightsLgw ↔ Orlando30.9% of 826 flightsMan ↔ Orlando22.9% of 612 flights
Airport comparison table: operations, cancellations, three-hour delays and data quality
Other UK airport to the same cityOperationsDisruptionCancellations>180 minData quality
Bfs ↔ Orlandosuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Bhx ↔ Orlandosuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Brs ↔ Orlandosuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Cwl ↔ Orlandosuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Edi ↔ Orlando6428.1% of 64 movementsno events in 64 movementsno events in 64 movementsdescriptive comparison
Gla ↔ Orlandosuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Lgw ↔ Orlando82630.9% of 826 movements1.3% of 826 movements1.7% of 826 movementsdescriptive comparison
Ltn ↔ Orlandosuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Man ↔ Orlando61222.9% of 612 movements1.0% of 612 movements0.7% of 612 movementsdescriptive comparison
Stn ↔ Orlandosuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed

Does the direction you are flying change anything?

Barely: arrivals into LHR ran 22.4% of 626 movements disrupted, departures 20.1% of 621 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 LHR22.4% of 626 movements1.1% of 626 movements0.6% of 626 movements
Departures from LHR20.1% of 621 movements0.3% of 621 movements0.5% of 621 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 202640 flights out of 3,17640 × £520 = £20,800
ArrivalsLast 72 months · Jul 2020–Jun 202640 flights out of 3,17040 × £520 = £20,800
DeparturesWhole archive · Jan 2018–Jun 202616 flights out of 3,16116 × £520 = £8,320
DeparturesLast 72 months · Jul 2020–Jun 202616 flights out of 3,15316 × £520 = £8,320
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 airportHEATHROW · LHR
Final point / countryORLANDO / USA
Final point codesMCO / KMCO
Great-circle distance6,965 km
Maximum statutory amount for the band£520
Average operated arrivals per day1.70
Presence in the latest twelve-month windowoperations present in every month of the latest twelve-month window
First and last active monthOct 2018–Jun 2026
Months with operations in the archive62

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: 626; excluded by quarantine: 0.

Quick answers

How often is this route disrupted?

22.4% of 626 movements over July 2025 to June 2026. Arrivals into the UK airport; all published carriers.

How many flights are cancelled at short notice?

1.1% of 626 movements in the same window.

How many delays crossed three hours?

0.6% of 626 movements in the same window; these are observed movements, not a count of claims.

What does the delay distribution look like?

rare but severe. The class compares the tail with short delays across routes in the corpus.

What distance is used?

6,965 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.

Your trip has already gone wrong — what now?

The official route to complain

Contact the airline first, then the relevant ADR body or the CAA. The right to care is assessed separately from compensation; time limits and circumstances are checked case by case. CAA: how to complain.

Reconstruction and formulas

Open the versioned claim register

Was your flight delayed 3h+? Check what you may be owed

We'll email you once; unsubscribe any time.

Related records