UK FLIGHT DELAY INDEX

derived from CAA punctuality statistics for UK reporting airports

How often are these flights late or cancelled?

LTN ↔ BELFAST INTERNATIONAL

In the twelve months from July 2025 to June 2026, 22.1% of 1,151 movements arriving into LTN were disrupted — that is, they landed more than fifteen minutes late or were cancelled at short notice.

Put the other way round, 77.9% of 1,151 movements arrived on time by the industry's fifteen-minute standard. Severe delays were rarer: about one arrival in every 230 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, 22.1% of 1,151 movements were disrupted and 0.8% of 1,151 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
22.1% of 1,151 movements0.8% of 1,151 movements28.8–60.4 min; N of delayed flights=245–4741,151
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: 0.8% of 1,151 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 min21.3%30 min13.4%60 min5.6%120 min1.5%180 min0.4%360 min0.0%
Delay ladder table: share, movements and one-in-N
DelayShare and nMovementsOne delay in every N operations
>15 min21.3% of 1,151 movements2454.7
>30 min13.4% of 1,151 movements1547.5
>60 min5.6% of 1,151 movements6418.0
>120 min1.5% of 1,151 movements1767.7
>180 min0.4% of 1,151 movements5230.2
>360 minno events in 1,151 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?

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 early12110.5%15–1 early54747.5%0–15 late22919.9%16–30917.9%31–60907.8%61…120474.1%121…180121.0%181…36050.4%>36000.0%D=1,151
Definitions, denominators and limits

Ratio of the long tail to sixteen-to-sixty-minute delays: 0.0276; 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 2020, 1.6% of 64 movements. Worst month: Dec 2022, 45.0% of 109 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: 15.1%; sample: 1062018Feb 2018: 29.5%; sample: 95Mar 2018: 29.9%; sample: 107Apr 2018: 29.8%; sample: 104May 2018: 28.3%; sample: 106Jun 2018: 37.6%; sample: 101Jul 2018: 35.5%; sample: 107Aug 2018: 32.4%; sample: 108Sep 2018: 21.4%; sample: 103Oct 2018: 26.4%; sample: 106Nov 2018: 10.6%; sample: 104Dec 2018: 28.2%; sample: 110Jan 2019: 17.1%; sample: 1112019Feb 2019: 16.3%; sample: 98Mar 2019: 21.5%; sample: 107Apr 2019: 25.2%; sample: 103May 2019: 18.9%; sample: 106Jun 2019: 33.3%; sample: 102Jul 2019: 22.4%; sample: 107Aug 2019: 33.0%; sample: 106Sep 2019: 26.0%; sample: 104Oct 2019: 29.2%; sample: 106Nov 2019: 14.4%; sample: 104Dec 2019: 29.2%; sample: 113Jan 2020: 12.7%; sample: 1102020Feb 2020: 34.3%; sample: 99Mar 2020: 21.2%; sample: 85Apr 2020: suppressed: fewer than twenty movements×May 2020: suppressed: fewer than twenty movements×Jun 2020: suppressed: fewer than twenty movements×Jul 2020: 2.8%; sample: 36Aug 2020: 8.3%; sample: 72Sep 2020: 1.6%; sample: 64Oct 2020: 0.0%; sample: 47Nov 2020: suppressed: fewer than twenty movements×Dec 2020: 18.8%; sample: 32Jan 2021: suppressed: fewer than twenty movements×2021Feb 2021: suppressed: fewer than twenty movements×Mar 2021: suppressed: fewer than twenty movements×Apr 2021: suppressed: fewer than twenty movements×May 2021: 7.9%; sample: 38Jun 2021: 3.8%; sample: 52Jul 2021: 10.4%; sample: 67Aug 2021: 16.9%; sample: 71Sep 2021: 5.7%; sample: 70Oct 2021: 20.8%; sample: 72Nov 2021: 11.8%; sample: 85Dec 2021: 16.5%; sample: 91Jan 2022: 4.8%; sample: 632022Feb 2022: 28.2%; sample: 71Mar 2022: 16.7%; sample: 96Apr 2022: 28.7%; sample: 101May 2022: 30.2%; sample: 96Jun 2022: 22.5%; sample: 102Jul 2022: 29.4%; sample: 102Aug 2022: 26.2%; sample: 107Sep 2022: 29.9%; sample: 107Oct 2022: 31.2%; sample: 112Nov 2022: 10.8%; sample: 102Dec 2022: 45.0%; sample: 109Jan 2023: 14.4%; sample: 1042023Feb 2023: 14.2%; sample: 113Mar 2023: 29.8%; sample: 124Apr 2023: 37.4%; sample: 107May 2023: 27.5%; sample: 120Jun 2023: 39.5%; sample: 114Jul 2023: 40.9%; sample: 115Aug 2023: 36.5%; sample: 115Sep 2023: 38.1%; sample: 113Oct 2023: 23.1%; sample: 117Nov 2023: 15.9%; sample: 107Dec 2023: 30.1%; sample: 113Jan 2024: 25.6%; sample: 782024Feb 2024: 24.7%; sample: 97Mar 2024: 20.6%; sample: 107Apr 2024: 16.5%; sample: 115May 2024: 13.6%; sample: 118Jun 2024: 29.2%; sample: 106Jul 2024: 17.2%; sample: 116Aug 2024: 15.8%; sample: 114Sep 2024: 26.8%; sample: 112Oct 2024: 15.2%; sample: 105Nov 2024: 23.0%; sample: 87Dec 2024: 31.1%; sample: 103Jan 2025: 27.2%; sample: 922025Feb 2025: 16.7%; sample: 102Mar 2025: 10.6%; sample: 113Apr 2025: 11.1%; sample: 90May 2025: 18.2%; sample: 88Jun 2025: 11.6%; sample: 95Jul 2025: 27.5%; sample: 102Aug 2025: 25.2%; sample: 103Sep 2025: 25.7%; sample: 74Oct 2025: 28.2%; sample: 85Nov 2025: 20.0%; sample: 95Dec 2025: 19.8%; sample: 111Jan 2026: 28.6%; sample: 912026Feb 2026: 15.5%; sample: 97Mar 2026: 23.9%; sample: 109Apr 2026: 13.5%; sample: 96May 2026: 22.1%; sample: 95Jun 2026: 16.1%; sample: 93Pandemic 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 201815.1% of 106 movements
Feb 201829.5% of 95 movements
Mar 201829.9% of 107 movements
Apr 201829.8% of 104 movements
May 201828.3% of 106 movements
Jun 201837.6% of 101 movements
Jul 201835.5% of 107 movements
Aug 201832.4% of 108 movements
Sep 201821.4% of 103 movements
Oct 201826.4% of 106 movements
Nov 201810.6% of 104 movements
Dec 201828.2% of 110 movements
Jan 201917.1% of 111 movements
Feb 201916.3% of 98 movements
Mar 201921.5% of 107 movements
Apr 201925.2% of 103 movements
May 201918.9% of 106 movements
Jun 201933.3% of 102 movements
Jul 201922.4% of 107 movements
Aug 201933.0% of 106 movements
Sep 201926.0% of 104 movements
Oct 201929.2% of 106 movements
Nov 201914.4% of 104 movements
Dec 201929.2% of 113 movements
Jan 202012.7% of 110 movements
Feb 202034.3% of 99 movements
Mar 202021.2% of 85 movements
Apr 2020suppressed: fewer than twenty movements
May 2020suppressed: fewer than twenty movements
Jun 2020suppressed: fewer than twenty movements
Jul 20202.8% of 36 movements — small sample, not ranked
Aug 20208.3% of 72 movements
Sep 20201.6% of 64 movements
Oct 2020no events in 47 movements — small sample, not ranked
Nov 2020suppressed: fewer than twenty movements
Dec 202018.8% of 32 movements — small sample, not ranked
Jan 2021suppressed: fewer than twenty movements
Feb 2021suppressed: fewer than twenty movements
Mar 2021suppressed: fewer than twenty movements
Apr 2021suppressed: fewer than twenty movements
May 20217.9% of 38 movements — small sample, not ranked
Jun 20213.8% of 52 movements
Jul 202110.4% of 67 movements
Aug 202116.9% of 71 movements
Sep 20215.7% of 70 movements
Oct 202120.8% of 72 movements
Nov 202111.8% of 85 movements
Dec 202116.5% of 91 movements
Jan 20224.8% of 63 movements
Feb 202228.2% of 71 movements
Mar 202216.7% of 96 movements
Apr 202228.7% of 101 movements
May 202230.2% of 96 movements
Jun 202222.5% of 102 movements
Jul 202229.4% of 102 movements
Aug 202226.2% of 107 movements
Sep 202229.9% of 107 movements
Oct 202231.2% of 112 movements
Nov 202210.8% of 102 movements
Dec 202245.0% of 109 movements
Jan 202314.4% of 104 movements
Feb 202314.2% of 113 movements
Mar 202329.8% of 124 movements
Apr 202337.4% of 107 movements
May 202327.5% of 120 movements
Jun 202339.5% of 114 movements
Jul 202340.9% of 115 movements
Aug 202336.5% of 115 movements
Sep 202338.1% of 113 movements
Oct 202323.1% of 117 movements
Nov 202315.9% of 107 movements
Dec 202330.1% of 113 movements
Jan 202425.6% of 78 movements
Feb 202424.7% of 97 movements
Mar 202420.6% of 107 movements
Apr 202416.5% of 115 movements
May 202413.6% of 118 movements
Jun 202429.2% of 106 movements
Jul 202417.2% of 116 movements
Aug 202415.8% of 114 movements
Sep 202426.8% of 112 movements
Oct 202415.2% of 105 movements
Nov 202423.0% of 87 movements
Dec 202431.1% of 103 movements
Jan 202527.2% of 92 movements
Feb 202516.7% of 102 movements
Mar 202510.6% of 113 movements
Apr 202511.1% of 90 movements
May 202518.2% of 88 movements
Jun 202511.6% of 95 movements
Jul 202527.5% of 102 movements
Aug 202525.2% of 103 movements
Sep 202525.7% of 74 movements
Oct 202528.2% of 85 movements
Nov 202520.0% of 95 movements
Dec 202519.8% of 111 movements
Jan 202628.6% of 91 movements
Feb 202615.5% of 97 movements
Mar 202623.9% of 109 movements
Apr 202613.5% of 96 movements
May 202622.1% of 95 movements
Jun 202616.1% of 93 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 2022Arrivals29.4% of 102 movements17.8% across 985 flightsreturned after 4 months
Summer 2022 breakdown · Jul 2022Departures46.1% of 102 movements15.6% across 980 flightsreturned after 4 months
NATS system failure · Aug 2023Arrivals36.5% of 115 movements28.9% across 1,334 flightsreturned after 2 months
NATS system failure · Aug 2023Departures40.5% of 116 movements34.2% across 1,331 flightsreturned after 2 months
Heathrow fire closure · Mar 2025Arrivals10.6% of 113 movements21.1% across 1,277 flightsreturned the next month
Heathrow fire closure · Mar 2025Departures12.4% of 113 movements23.5% across 1,277 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?

December has historically been the hardest month on this route: in a typical December, 29.6% of arrivals were disrupted, measured across 6 Decembers in the archive. November has been the calmest, at 15.2% across 6 Novembers.

Even December has ranged from 19.8% to 45.0% 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 nJanFebMarAprMayJunJulAugSepOctNovDec201917.1% of 111 movements16.3% of 98 movements21.5% of 107 movements25.2% of 103 movements18.9% of 106 movements33.3% of 102 movements22.4% of 107 movements33.0% of 106 movements26.0% of 104 movements29.2% of 106 movements14.4% of 104 movements29.2% of 113 movements202012.7% of 110 movements34.3% of 99 movements21.2% of 85 movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movements2.8% of 36 movements †8.3% of 72 movements1.6% of 64 movementsno events in 47 movements †suppressed: fewer than twenty movements18.8% of 32 movements †2021suppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movements7.9% of 38 movements †3.8% of 52 movements10.4% of 67 movements16.9% of 71 movements5.7% of 70 movements20.8% of 72 movements11.8% of 85 movements16.5% of 91 movements20224.8% of 63 movements28.2% of 71 movements16.7% of 96 movements28.7% of 101 movements30.2% of 96 movements22.5% of 102 movements29.4% of 102 movements26.2% of 107 movements29.9% of 107 movements31.2% of 112 movements10.8% of 102 movements45.0% of 109 movements202314.4% of 104 movements14.2% of 113 movements29.8% of 124 movements37.4% of 107 movements27.5% of 120 movements39.5% of 114 movements40.9% of 115 movements36.5% of 115 movements38.1% of 113 movements23.1% of 117 movements15.9% of 107 movements30.1% of 113 movements202425.6% of 78 movements24.7% of 97 movements20.6% of 107 movements16.5% of 115 movements13.6% of 118 movements29.2% of 106 movements17.2% of 116 movements15.8% of 114 movements26.8% of 112 movements15.2% of 105 movements23.0% of 87 movements31.1% of 103 movements202527.2% of 92 movements16.7% of 102 movements10.6% of 113 movements11.1% of 90 movements18.2% of 88 movements11.6% of 95 movements27.5% of 102 movements25.2% of 103 movements25.7% of 74 movements28.2% of 85 movements20.0% of 95 movements19.8% of 111 movements202628.6% of 91 movements15.5% of 97 movements23.9% of 109 movements13.5% of 96 movements22.1% of 95 movements16.1% of 93 movementsno datano datano datano datano datano data
Month-by-month table: median, observed range and sample
MonthMedianObserved rangeSample
Jan17.1%4.8–28.6%7 months, 645 flights
Feb16.7%14.2–29.5%7 months, 673 flights
Mar21.5%10.6–29.9%7 months, 763 flights
Apr25.2%11.1–37.4%7 months, 716 flights
May22.1%13.6–30.2%7 months, 729 flights
Jun29.2%11.6–39.5%7 months, 713 flights
Jul28.4%17.2–40.9%6 months, 649 flights
Aug29.3%15.8–36.5%6 months, 653 flights
Sep26.4%21.4–38.1%6 months, 613 flights
Oct27.3%15.2–31.2%6 months, 631 flights
Nov15.2%10.6–23.0%6 months, 599 flights
Dec29.6%19.8–45.0%6 months, 659 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: Easyjet Uk Ltd, 22.1% of 1,151 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 optionEasyjet Uk22.1% of 1,151 flights
Airline comparison table: operations, cancellations, three-hour delays and data quality
AirlineOperationsDisruptionCancellations>180 minData quality
Easyjet Airlinesuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Easyjet Uk1,15122.1% of 1,151 movements0.8% of 1,151 movements0.4% of 1,151 movementsdescriptive comparison
Ryanairsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Wizz Air Uksuppressed: 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, SOU had the lowest disruption share at 10.1% of 129 movements and MAN the highest at 28.0% of 1,987 movements. This route sits at 22.1% of 1,151 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 ↔ Belfast-International15.5% of 1,268 flightsBrs ↔ Belfast-International23.5% of 878 flightsEdi ↔ Belfast-International20.6% of 1,873 flightsEma ↔ Belfast-International18.1% of 144 flightsGla ↔ Belfast-International16.1% of 1,183 flightsJer ↔ Belfast-International13.0% of 77 flightsLba ↔ Belfast-International20.7% of 174 flightsLgw ↔ Belfast-International19.1% of 1,428 flights
Airport comparison table: operations, cancellations, three-hour delays and data quality
Other UK airport to the same cityOperationsDisruptionCancellations>180 minData quality
Abz ↔ Belfast-Internationalsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Bhd ↔ Belfast-Internationalsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Bhx ↔ Belfast-International1,26815.5% of 1,268 movements1.1% of 1,268 movements0.5% of 1,268 movementsdescriptive comparison
Boh ↔ Belfast-Internationalsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Brs ↔ Belfast-International87823.5% of 878 movements0.8% of 878 movements0.8% of 878 movementsdescriptive comparison
Cwl ↔ Belfast-Internationalsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Doncaster-Sheffield ↔ Belfast-Internationalsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Edi ↔ Belfast-International1,87320.6% of 1,873 movements0.7% of 1,873 movements0.6% of 1,873 movementsdescriptive comparison
Ema ↔ Belfast-International14418.1% of 144 movementsno events in 144 movements0.7% of 144 movementsdescriptive comparison
Ext ↔ Belfast-Internationalsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Gla ↔ Belfast-International1,18316.1% of 1,183 movements0.4% of 1,183 movements0.6% of 1,183 movementsdescriptive comparison
Iom ↔ Belfast-Internationalsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Jer ↔ Belfast-International7713.0% of 77 movementsno events in 77 movements1.3% of 77 movementsdescriptive comparison
Lba ↔ Belfast-International17420.7% of 174 movements1.1% of 174 movements1.1% of 174 movementsdescriptive comparison
Lgw ↔ Belfast-International1,42819.1% of 1,428 movements0.4% of 1,428 movements0.8% of 1,428 movementsdescriptive comparison
Lhr ↔ Belfast-Internationalsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Lpl ↔ Belfast-International1,30217.7% of 1,302 movements1.4% of 1,302 movements0.3% of 1,302 movementsdescriptive comparison
Man ↔ Belfast-International1,98728.0% of 1,987 movements0.7% of 1,987 movements0.8% of 1,987 movementsdescriptive comparison
Mme ↔ Belfast-Internationalsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Ncl ↔ Belfast-International89613.6% of 896 movementsno events in 896 movements0.4% of 896 movementsdescriptive comparison
Sen ↔ Belfast-Internationalsuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed
Sou ↔ Belfast-International12910.1% of 129 movements0.8% of 129 movements1.6% of 129 movementsdescriptive comparison
Stn ↔ Belfast-International1,92315.8% of 1,923 movements0.3% of 1,923 movements0.5% of 1,923 movementsdescriptive comparison

Does the direction you are flying change anything?

Barely: arrivals into LTN ran 22.1% of 1,151 movements disrupted, departures 23.6% of 1,148 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 LTN22.1% of 1,151 movements0.8% of 1,151 movements0.4% of 1,151 movements
Departures from LTN23.6% of 1,148 movements0.6% of 1,148 movements0.5% of 1,148 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 202631 flights out of 9,19631 × £220 = £6,820
ArrivalsLast 72 months · Jul 2020–Jun 202625 flights out of 6,37825 × £220 = £5,500
DeparturesWhole archive · Jan 2018–Jun 202624 flights out of 9,18524 × £220 = £5,280
DeparturesLast 72 months · Jul 2020–Jun 202618 flights out of 6,36718 × £220 = £3,960
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 airportLUTON · LTN
Final point / countryBELFAST INTERNATIONAL / UNITED KINGDOM
Final point codesBFS / EGAA
Great-circle distance497 km
Maximum statutory amount for the band£220
Average operated arrivals per day3.13
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 archive99

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: 1,151; excluded by quarantine: 0.

Quick answers

How often is this route disrupted?

22.1% of 1,151 movements over July 2025 to June 2026. Arrivals into the UK airport; all published carriers.

How many flights are cancelled at short notice?

0.8% of 1,151 movements in the same window.

How many delays crossed three hours?

0.4% of 1,151 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?

497 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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