UK FLIGHT DELAY INDEX

derived from CAA punctuality statistics for UK reporting airports

How often are these flights late or cancelled?

LCY ↔ MILAN LINATE

In the twelve months from July 2025 to June 2026, 10.9% of 2,334 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, 89.1% of 2,334 movements arrived on time by the industry's fifteen-minute standard. Severe delays were rarer: about one arrival in every 1,167 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, 10.9% of 2,334 movements were disrupted and 0.9% of 2,334 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
10.9% of 2,334 movements0.9% of 2,334 movements18.1–57.7 min; N of delayed flights=233–6142,334
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: 0.9% of 2,334 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 min10.0%30 min5.1%60 min2.1%120 min0.4%180 min0.1%360 min0.0%
Delay ladder table: share, movements and one-in-N
DelayShare and nMovementsOne delay in every N operations
>15 min10.0% of 2,334 movements23310.0
>30 min5.1% of 2,334 movements11919.6
>60 min2.1% of 2,334 movements4848.6
>120 min0.4% of 2,334 movements9259.3
>180 min0.1% of 2,334 movements21,167.0
>360 minno events in 2,334 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 early53222.8%15–1 early1,16650.0%0–15 late38116.3%16–301144.9%31–60713.0%61…120391.7%121…18070.3%181…36020.1%>36000.0%D=2,334
Definitions, denominators and limits

Ratio of the long tail to sixteen-to-sixty-minute delays: 0.0108; 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: Mar 2025, 1.3% of 155 movements. Worst month: Sep 2023, 65.7% of 67 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: 15.7%; sample: 1912018Feb 2018: 18.8%; sample: 208Mar 2018: 19.1%; sample: 215Apr 2018: 14.9%; sample: 202May 2018: 21.7%; sample: 244Jun 2018: 26.4%; sample: 250Jul 2018: 17.4%; sample: 259Aug 2018: 17.4%; sample: 201Sep 2018: 9.4%; sample: 244Oct 2018: 8.0%; sample: 261Nov 2018: suppressed: fewer than twenty movements×Dec 2018: suppressed: fewer than twenty movements×Jan 2019: 10.7%; sample: 2522019Feb 2019: 15.4%; sample: 227Mar 2019: 16.3%; sample: 245Apr 2019: 4.8%; sample: 250May 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: 10.5%; sample: 2482020Feb 2020: 23.6%; sample: 233Mar 2020: 45.6%; sample: 57Apr 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: no data×Sep 2020: no data×Oct 2020: suppressed: fewer than twenty movements×Nov 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: 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: no data×Dec 2021: no data×Jan 2022: no data×2022Feb 2022: no data×Mar 2022: suppressed: fewer than twenty movements×Apr 2022: 11.0%; sample: 73May 2022: 17.5%; sample: 80Jun 2022: 38.5%; sample: 78Jul 2022: 23.4%; sample: 77Aug 2022: suppressed: fewer than twenty movements×Sep 2022: 27.3%; sample: 77Oct 2022: 8.2%; sample: 73Nov 2022: 17.1%; sample: 76Dec 2022: 36.8%; sample: 68Jan 2023: 11.3%; sample: 712023Feb 2023: 8.8%; sample: 68Mar 2023: 37.0%; sample: 81Apr 2023: 42.1%; sample: 95May 2023: 13.8%; sample: 87Jun 2023: 49.3%; sample: 75Jul 2023: suppressed: fewer than twenty movements×Aug 2023: 66.7%; sample: 36Sep 2023: 65.7%; sample: 67Oct 2023: 60.4%; sample: 48Nov 2023: 22.8%; sample: 79Dec 2023: 20.7%; sample: 82Jan 2024: 10.2%; sample: 1082024Feb 2024: 6.1%; sample: 99Mar 2024: 14.6%; sample: 103Apr 2024: 13.3%; sample: 120May 2024: 18.7%; sample: 139Jun 2024: 19.4%; sample: 129Jul 2024: 18.4%; sample: 136Aug 2024: 12.8%; sample: 133Sep 2024: 13.6%; sample: 132Oct 2024: 10.2%; sample: 137Nov 2024: 15.8%; sample: 146Dec 2024: 19.9%; sample: 156Jan 2025: 10.0%; sample: 1602025Feb 2025: 6.2%; sample: 146Mar 2025: 1.3%; sample: 155Apr 2025: 7.0%; sample: 187May 2025: 7.4%; sample: 190Jun 2025: 14.9%; sample: 194Jul 2025: 24.7%; sample: 194Aug 2025: 12.4%; sample: 193Sep 2025: 20.9%; sample: 196Oct 2025: 8.3%; sample: 206Nov 2025: 2.6%; sample: 192Dec 2025: 5.1%; sample: 197Jan 2026: 4.2%; sample: 1912026Feb 2026: 5.8%; sample: 190Mar 2026: 11.1%; sample: 207Apr 2026: 7.1%; sample: 196May 2026: 5.9%; sample: 187Jun 2026: 23.2%; sample: 185Pandemic 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 201815.7% of 191 movements
Feb 201818.8% of 208 movements
Mar 201819.1% of 215 movements
Apr 201814.9% of 202 movements
May 201821.7% of 244 movements
Jun 201826.4% of 250 movements
Jul 201817.4% of 259 movements
Aug 201817.4% of 201 movements
Sep 20189.4% of 244 movements
Oct 20188.0% of 261 movements
Nov 2018suppressed: fewer than twenty movements
Dec 2018suppressed: fewer than twenty movements
Jan 201910.7% of 252 movements
Feb 201915.4% of 227 movements
Mar 201916.3% of 245 movements
Apr 20194.8% of 250 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 202010.5% of 248 movements
Feb 202023.6% of 233 movements
Mar 202045.6% of 57 movements
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 2020no data
Sep 2020no data
Oct 2020suppressed: fewer than twenty movements
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 2021no data
May 2021no data
Jun 2021no data
Jul 2021no data
Aug 2021no data
Sep 2021no data
Oct 2021no data
Nov 2021no data
Dec 2021no data
Jan 2022no data
Feb 2022no data
Mar 2022suppressed: fewer than twenty movements
Apr 202211.0% of 73 movements
May 202217.5% of 80 movements
Jun 202238.5% of 78 movements
Jul 202223.4% of 77 movements
Aug 2022suppressed: fewer than twenty movements
Sep 202227.3% of 77 movements
Oct 20228.2% of 73 movements
Nov 202217.1% of 76 movements
Dec 202236.8% of 68 movements
Jan 202311.3% of 71 movements
Feb 20238.8% of 68 movements
Mar 202337.0% of 81 movements
Apr 202342.1% of 95 movements
May 202313.8% of 87 movements
Jun 202349.3% of 75 movements
Jul 2023suppressed: fewer than twenty movements
Aug 202366.7% of 36 movements — small sample, not ranked
Sep 202365.7% of 67 movements
Oct 202360.4% of 48 movements — small sample, not ranked
Nov 202322.8% of 79 movements
Dec 202320.7% of 82 movements
Jan 202410.2% of 108 movements
Feb 20246.1% of 99 movements
Mar 202414.6% of 103 movements
Apr 202413.3% of 120 movements
May 202418.7% of 139 movements
Jun 202419.4% of 129 movements
Jul 202418.4% of 136 movements
Aug 202412.8% of 133 movements
Sep 202413.6% of 132 movements
Oct 202410.2% of 137 movements
Nov 202415.8% of 146 movements
Dec 202419.9% of 156 movements
Jan 202510.0% of 160 movements
Feb 20256.2% of 146 movements
Mar 20251.3% of 155 movements
Apr 20257.0% of 187 movements
May 20257.4% of 190 movements
Jun 202514.9% of 194 movements
Jul 202524.7% of 194 movements
Aug 202512.4% of 193 movements
Sep 202520.9% of 196 movements
Oct 20258.3% of 206 movements
Nov 20252.6% of 192 movements
Dec 20255.1% of 197 movements
Jan 20264.2% of 191 movements
Feb 20265.8% of 190 movements
Mar 202611.1% of 207 movements
Apr 20267.1% of 196 movements
May 20265.9% of 187 movements
Jun 202623.2% of 185 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 2022Arrivals23.4% of 77 movementsno complete baselinenot enough data: needs a complete baseline and a publishable event month
Summer 2022 breakdown · Jul 2022Departures59.7% of 77 movementsno complete baselinenot enough data: needs a complete baseline and a publishable event month
NATS system failure · Aug 2023Arrivals66.7% of 36 movements — small sample, not rankedno complete baselinenot enough data: needs a complete baseline and a publishable event month
NATS system failure · Aug 2023Departures91.2% of 34 movements — small sample, not rankedno complete baselinenot enough data: needs a complete baseline and a publishable event month
Heathrow fire closure · Mar 2025Arrivals1.3% of 155 movements14.4% across 1,637 flightsreturned the next month
Heathrow fire closure · Mar 2025Departures14.7% of 156 movements41.3% across 1,642 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, 24.8% of arrivals were disrupted, measured across 6 Junes in the archive. February has been the calmest, at 7.5% across 6 Februarys.

Even June has ranged from 14.9% to 49.3% 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 nJanFebMarAprMayJunJulAugSepOctNovDec201910.7% of 252 movements15.4% of 227 movements16.3% of 245 movements4.8% of 250 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 movements202010.5% of 248 movements23.6% of 233 movements45.6% of 57 movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementsno datano datasuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movements2021suppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementsno datano datano datano datano datano datano datano datano data2022no datano datasuppressed: fewer than twenty movements11.0% of 73 movements17.5% of 80 movements38.5% of 78 movements23.4% of 77 movementssuppressed: fewer than twenty movements27.3% of 77 movements8.2% of 73 movements17.1% of 76 movements36.8% of 68 movements202311.3% of 71 movements8.8% of 68 movements37.0% of 81 movements42.1% of 95 movements13.8% of 87 movements49.3% of 75 movementssuppressed: fewer than twenty movements66.7% of 36 movements †65.7% of 67 movements60.4% of 48 movements †22.8% of 79 movements20.7% of 82 movements202410.2% of 108 movements6.1% of 99 movements14.6% of 103 movements13.3% of 120 movements18.7% of 139 movements19.4% of 129 movements18.4% of 136 movements12.8% of 133 movements13.6% of 132 movements10.2% of 137 movements15.8% of 146 movements19.9% of 156 movements202510.0% of 160 movements6.2% of 146 movements1.3% of 155 movements7.0% of 187 movements7.4% of 190 movements14.9% of 194 movements24.7% of 194 movements12.4% of 193 movements20.9% of 196 movements8.3% of 206 movements2.6% of 192 movements5.1% of 197 movements20264.2% of 191 movements5.8% of 190 movements11.1% of 207 movements7.1% of 196 movements5.9% of 187 movements23.2% of 185 movementsno datano datano datano datano datano data
Month-by-month table: median, observed range and sample
MonthMedianObserved rangeSample
Jan10.4%4.2–15.7%6 months, 973 flights
Feb7.5%5.8–18.8%6 months, 938 flights
Mar15.4%1.3–37.0%6 months, 1,006 flights
Apr11.0%4.8–42.1%7 months, 1,123 flights
May15.6%5.9–21.7%6 months, 927 flights
Jun24.8%14.9–49.3%6 months, 911 flights
Jul20.9%17.4–24.7%4 months, 666 flights
Aug15.1%12.4–66.7%4 months, 563 flights
Sep20.9%9.4–65.7%5 months, 716 flights
Oct8.3%8.0–60.4%5 months, 725 flights
Nov16.4%2.6–22.8%4 months, 493 flights
Dec20.3%5.1–36.8%4 months, 503 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: Italia Traspoto Aereo 7.5% of 1,519 movements, Ba Cityflyer 17.3% of 815 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 optionBa Cityflyer17.3% of 815 flightsItalia Traspoto Aereo7.5% of 1,519 flights
Airline comparison table: operations, cancellations, three-hour delays and data quality
AirlineOperationsDisruptionCancellations>180 minData quality
(Ita) Italia Traspoto Aereosuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Alitalia (Cai)suppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Ba Cityflyer81517.3% of 815 movements1.7% of 815 movements0.2% of 815 movementsdescriptive comparison
Italia Traspoto Aereo1,5197.5% of 1,519 movements0.5% of 1,519 movementsno events in 1,519 movementsdescriptive comparison
Stobart Airsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Sun Air Of Scandinaviasuppressed: 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, EDI had the lowest disruption share at 17.3% of 365 movements and BHX the highest at 35.0% of 103 movements. This route sits at 10.9% of 2,334 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 optionBhx ↔ Milan-Linate35.0% of 103 flightsEdi ↔ Milan-Linate17.3% of 365 flightsLgw ↔ Milan-Linate32.2% of 559 flightsLhr ↔ Milan-Linate24.1% of 2,476 flightsMan ↔ Milan-Linate27.7% of 364 flights
Airport comparison table: operations, cancellations, three-hour delays and data quality
Other UK airport to the same cityOperationsDisruptionCancellations>180 minData quality
Bhd ↔ Milan-Linatesuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Bhx ↔ Milan-Linate10335.0% of 103 movementsno events in 103 movementsno events in 103 movementsdescriptive comparison
Boh ↔ Milan-Linatesuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Edi ↔ Milan-Linate36517.3% of 365 movements1.4% of 365 movements0.5% of 365 movementsdescriptive comparison
Ema ↔ Milan-Linatesuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Lgw ↔ Milan-Linate55932.2% of 559 movements0.4% of 559 movements0.7% of 559 movementsdescriptive comparison
Lhr ↔ Milan-Linate2,47624.1% of 2,476 movements1.5% of 2,476 movements0.4% of 2,476 movementsdescriptive comparison
Ltn ↔ Milan-Linatesuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Man ↔ Milan-Linate36427.7% of 364 movements0.3% of 364 movements0.3% of 364 movementsdescriptive comparison
Sen ↔ Milan-Linatesuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Stn ↔ Milan-Linatesuppressed: 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 10.9% of 2,334 movements disrupted, departures 23.3% of 2,354 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 LCY10.9% of 2,334 movements0.9% of 2,334 movements0.1% of 2,334 movements
Departures from LCY23.3% of 2,354 movements1.4% of 2,354 movements0.1% of 2,354 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 202615 flights out of 10,13615 × £220 = £3,300
ArrivalsLast 72 months · Jul 2020–Jun 20268 flights out of 6,3268 × £220 = £1,760
DeparturesWhole archive · Jan 2018–Jun 202633 flights out of 10,18933 × £220 = £7,260
DeparturesLast 72 months · Jul 2020–Jun 202615 flights out of 6,36415 × £220 = £3,300
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 / countryMILAN (LINATE) / ITALY
Final point codesLIN / LIML
Great-circle distance956 km
Maximum statutory amount for the band£220
Average operated arrivals per day6.33
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 archive75

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: 2,334; excluded by quarantine: 0.

Quick answers

How often is this route disrupted?

10.9% of 2,334 movements over July 2025 to June 2026. Arrivals into the UK airport; all published carriers.

How many flights are cancelled at short notice?

0.9% of 2,334 movements in the same window.

How many delays crossed three hours?

0.1% of 2,334 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?

956 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

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