UK FLIGHT DELAY INDEX

derived from CAA punctuality statistics for UK reporting airports

How often are these flights late or cancelled?

Croatia

In the twelve months from July 2025 to June 2026, 31.3% of 6,607 movements arriving into the UK were disrupted — more than fifteen minutes late or cancelled at short notice.

Put the other way round, 68.7% of 6,607 movements met the fifteen-minute convention. These are historical observations, not a forecast.

Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Source: CAA punctuality statistics · snapshot 17/08/2026 10:24 · method route-record-v2.1 · Versioned claims, formulas and entity mapping.

0 operations (0.00%) excluded because their published percentages could not be reconciled to whole numbers. Excluded operations enter neither the numerator nor the denominator. Outcome figures and comparisons are unavailable when the excluded share exceeds fifteen percent.

The four numbers at a glance

31.3% of 6,607 movements were disrupted over July 2025 to June 2026.

Average delay covers delayed movements only. Its range reflects rounded source means and the unknown count of exactly punctual movements.

DisruptionShort-notice cancellationsDelay among delayed movementsOver three hours
31.3% of 6,607 movements0.8% of 6,607 movements30.4–61.0 minutes; delayed denominator 2,018–3,8350.7% of 6,607 movements
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

When late, how late?

0.7% of 6,607 movements passed the three-hour mark.

The ladder shows how many movements crossed each threshold. Cancellations are separate: 0.8% of 6,607 movements.

DelayShare and sampleOne event per movements
More than 15 minutes30.5% of 6,607 movements3.3
More than 30 minutes18.3% of 6,607 movements5.5
More than 60 minutes7.4% of 6,607 movements13.4
More than 120 minutes2.0% of 6,607 movements49.7
More than 180 minutes0.7% of 6,607 movements137.6
More than 360 minutes0.1% of 6,607 movements734.1
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Slightly late or occasionally a disaster?

2.0% of 6,607 movements passed two hours.

The histogram shows the published delay bands. Bucket shares use all reported operations, including unmatched records; cancellations are reported separately.

Nine delay buckets, minutes; share of all recorded operations>15 early73711.2%15–1 early1,98530.0%0–15 late1,81727.5%16–3080912.2%31–6071710.8%61…1203595.4%121…180851.3%181…360390.6%>36090.1%D=6,609
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Better or worse since the start of the archive?

Best month: Sep 2020, 3.5% of 257 movements. Worst month: Jul 2023, 62.9% of 1,022 movements.

The line traces every month. Lower disruption is better; gaps are never zeros. Pandemic readings describe a different operating regime.

Monthly disruption share; gaps mean no published dataJan 2018: 25.0%; sample: 442018Feb 2018: 20.5%; sample: 44Mar 2018: 26.6%; sample: 79Apr 2018: 22.9%; sample: 223May 2018: 32.7%; sample: 636Jun 2018: 41.3%; sample: 820Jul 2018: 47.3%; sample: 928Aug 2018: 36.5%; sample: 955Sep 2018: 31.3%; sample: 824Oct 2018: 20.8%; sample: 500Nov 2018: 17.2%; sample: 58Dec 2018: 43.6%; sample: 55Jan 2019: 17.1%; sample: 412019Feb 2019: 10.5%; sample: 38Mar 2019: 29.8%; sample: 57Apr 2019: 12.5%; sample: 265May 2019: 19.0%; sample: 738Jun 2019: 36.4%; sample: 938Jul 2019: 48.8%; sample: 989Aug 2019: 41.4%; sample: 1026Sep 2019: 32.5%; sample: 889Oct 2019: 24.4%; sample: 643Nov 2019: 9.3%; sample: 75Dec 2019: 22.2%; sample: 63Jan 2020: 6.1%; sample: 492020Feb 2020: 35.9%; sample: 64Mar 2020: 21.9%; sample: 64Apr 2020: suppressed: fewer than twenty movements×May 2020: suppressed: fewer than twenty movements×Jun 2020: suppressed: fewer than twenty movements×Jul 2020: 5.9%; sample: 187Aug 2020: 4.6%; sample: 604Sep 2020: 3.5%; sample: 257Oct 2020: 10.6%; sample: 47Nov 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: suppressed: fewer than twenty movements×May 2021: suppressed: fewer than twenty movements×Jun 2021: 9.6%; sample: 52Jul 2021: 19.0%; sample: 184Aug 2021: 14.8%; sample: 566Sep 2021: 9.7%; sample: 580Oct 2021: 7.8%; sample: 411Nov 2021: 7.8%; sample: 51Dec 2021: 19.4%; sample: 67Jan 2022: 31.2%; sample: 482022Feb 2022: 32.6%; sample: 46Mar 2022: 14.8%; sample: 115Apr 2022: 28.5%; sample: 312May 2022: 42.9%; sample: 602Jun 2022: 53.4%; sample: 794Jul 2022: 58.4%; sample: 994Aug 2022: 45.4%; sample: 973Sep 2022: 48.1%; sample: 862Oct 2022: 27.1%; sample: 630Nov 2022: 29.7%; sample: 101Dec 2022: 51.2%; sample: 84Jan 2023: 20.0%; sample: 852023Feb 2023: 21.2%; sample: 85Mar 2023: 38.5%; sample: 122Apr 2023: 23.1%; sample: 325May 2023: 25.3%; sample: 590Jun 2023: 52.8%; sample: 861Jul 2023: 62.9%; sample: 1022Aug 2023: 56.1%; sample: 1011Sep 2023: 42.9%; sample: 864Oct 2023: 35.1%; sample: 501Nov 2023: 30.2%; sample: 96Dec 2023: 46.5%; sample: 71Jan 2024: 30.9%; sample: 682024Feb 2024: 17.1%; sample: 70Mar 2024: 20.2%; sample: 104Apr 2024: 14.7%; sample: 448May 2024: 21.9%; sample: 743Jun 2024: 48.5%; sample: 970Jul 2024: 62.0%; sample: 1057Aug 2024: 49.0%; sample: 1087Sep 2024: 50.0%; sample: 970Oct 2024: 23.7%; sample: 696Nov 2024: 19.8%; sample: 126Dec 2024: 34.4%; sample: 93Jan 2025: 28.0%; sample: 822025Feb 2025: 20.0%; sample: 80Mar 2025: 11.7%; sample: 120Apr 2025: 11.0%; sample: 417May 2025: 21.9%; sample: 766Jun 2025: 34.1%; sample: 981Jul 2025: 39.3%; sample: 1103Aug 2025: 34.4%; sample: 1105Sep 2025: 40.4%; sample: 960Oct 2025: 24.1%; sample: 668Nov 2025: 12.6%; sample: 127Dec 2025: 20.8%; sample: 77Jan 2026: 26.0%; sample: 772026Feb 2026: 23.0%; sample: 74Mar 2026: 14.0%; sample: 121Apr 2026: 12.7%; sample: 394May 2026: 23.9%; sample: 850Jun 2026: 34.8%; sample: 1051Pandemic regime Jun 2020Summer 2022 breakdown Jul 2022NATS system failure Aug 2023Heathrow fire closure Mar 2025100%0%
Every monthly observation
MonthDisruption on arrivals
Jan 201825.0% of 44 movements — small sample, not ranked
Feb 201820.5% of 44 movements — small sample, not ranked
Mar 201826.6% of 79 movements
Apr 201822.9% of 223 movements
May 201832.7% of 636 movements
Jun 201841.3% of 820 movements
Jul 201847.3% of 928 movements
Aug 201836.5% of 955 movements
Sep 201831.3% of 824 movements
Oct 201820.8% of 500 movements
Nov 201817.2% of 58 movements
Dec 201843.6% of 55 movements
Jan 201917.1% of 41 movements — small sample, not ranked
Feb 201910.5% of 38 movements — small sample, not ranked
Mar 201929.8% of 57 movements
Apr 201912.5% of 265 movements
May 201919.0% of 738 movements
Jun 201936.4% of 938 movements
Jul 201948.8% of 989 movements
Aug 201941.4% of 1,026 movements
Sep 201932.5% of 889 movements
Oct 201924.4% of 643 movements
Nov 20199.3% of 75 movements
Dec 201922.2% of 63 movements
Jan 20206.1% of 49 movements — small sample, not ranked
Feb 202035.9% of 64 movements
Mar 202021.9% of 64 movements
Apr 2020suppressed: fewer than twenty movements
May 2020suppressed: fewer than twenty movements
Jun 2020suppressed: fewer than twenty movements
Jul 20205.9% of 187 movements
Aug 20204.6% of 604 movements
Sep 20203.5% of 257 movements
Oct 202010.6% of 47 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 2021suppressed: fewer than twenty movements
May 2021suppressed: fewer than twenty movements
Jun 20219.6% of 52 movements
Jul 202119.0% of 184 movements
Aug 202114.8% of 566 movements
Sep 20219.7% of 580 movements
Oct 20217.8% of 411 movements
Nov 20217.8% of 51 movements
Dec 202119.4% of 67 movements
Jan 202231.2% of 48 movements — small sample, not ranked
Feb 202232.6% of 46 movements — small sample, not ranked
Mar 202214.8% of 115 movements
Apr 202228.5% of 312 movements
May 202242.9% of 602 movements
Jun 202253.4% of 794 movements
Jul 202258.4% of 994 movements
Aug 202245.4% of 973 movements
Sep 202248.1% of 862 movements
Oct 202227.1% of 630 movements
Nov 202229.7% of 101 movements
Dec 202251.2% of 84 movements
Jan 202320.0% of 85 movements
Feb 202321.2% of 85 movements
Mar 202338.5% of 122 movements
Apr 202323.1% of 325 movements
May 202325.3% of 590 movements
Jun 202352.8% of 861 movements
Jul 202362.9% of 1,022 movements
Aug 202356.1% of 1,011 movements
Sep 202342.9% of 864 movements
Oct 202335.1% of 501 movements
Nov 202330.2% of 96 movements
Dec 202346.5% of 71 movements
Jan 202430.9% of 68 movements
Feb 202417.1% of 70 movements
Mar 202420.2% of 104 movements
Apr 202414.7% of 448 movements
May 202421.9% of 743 movements
Jun 202448.5% of 970 movements
Jul 202462.0% of 1,057 movements
Aug 202449.0% of 1,087 movements
Sep 202450.0% of 970 movements
Oct 202423.7% of 696 movements
Nov 202419.8% of 126 movements
Dec 202434.4% of 93 movements
Jan 202528.0% of 82 movements
Feb 202520.0% of 80 movements
Mar 202511.7% of 120 movements
Apr 202511.0% of 417 movements
May 202521.9% of 766 movements
Jun 202534.1% of 981 movements
Jul 202539.3% of 1,103 movements
Aug 202534.4% of 1,105 movements
Sep 202540.4% of 960 movements
Oct 202524.1% of 668 movements
Nov 202512.6% of 127 movements
Dec 202520.8% of 77 movements
Jan 202626.0% of 77 movements
Feb 202623.0% of 74 movements
Mar 202614.0% of 121 movements
Apr 202612.7% of 394 movements
May 202623.9% of 850 movements
Jun 202634.8% of 1,051 movements
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

What did the big disruptions do here?

Each event is compared with the twelve preceding calendar months and the first later return to baseline.

A worse month is not proof the named event caused it. The open data carry no delay-cause field. Recovery is observed for at most eight subsequent months.

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 2022Arrivals58.4% of 994 movements23.5% across 3,776 flightsreturned after 6 months
Summer 2022 breakdown · Jul 2022Departures57.2% of 993 movements32.7% across 3,797 flightsreturned after 3 months
NATS system failure · Aug 2023Arrivals56.1% of 1,011 movements37.1% across 5,740 flightsreturned after 2 months
NATS system failure · Aug 2023Departures49.9% of 1,008 movements41.9% across 5,717 flightsreturned the next month
Heathrow fire closure · Mar 2025Arrivals11.7% of 120 movements32.7% across 6,456 flightsreturned the next month
Heathrow fire closure · Mar 2025Departures18.3% of 120 movements36.2% across 6,466 flightsreturned the next month
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Which time of year has been hardest?

Highest median: Jul, 53.6% across 6 months. Lowest median: Apr, 14.7% across 7 months.

Even the same calendar month differs across years. This is a record, not a forecast; pandemic years are excluded from the summaries.

Each cell is one calendar month of one year; the number is the share of that month’s arrivals that were disrupted. Darker means worse. A blank cell means no published data, not zero.

Seasonality: calendar month by year; share and nJanFebMarAprMayJunJulAugSepOctNovDec201917.1% of 41 movements †10.5% of 38 movements †29.8% of 57 movements12.5% of 265 movements19.0% of 738 movements36.4% of 938 movements48.8% of 989 movements41.4% of 1,026 movements32.5% of 889 movements24.4% of 643 movements9.3% of 75 movements22.2% of 63 movements20206.1% of 49 movements †35.9% of 64 movements21.9% of 64 movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movements5.9% of 187 movements4.6% of 604 movements3.5% of 257 movements10.6% of 47 movements †suppressed: fewer than twenty movementssuppressed: fewer than twenty movements2021suppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movements9.6% of 52 movements19.0% of 184 movements14.8% of 566 movements9.7% of 580 movements7.8% of 411 movements7.8% of 51 movements19.4% of 67 movements202231.2% of 48 movements †32.6% of 46 movements †14.8% of 115 movements28.5% of 312 movements42.9% of 602 movements53.4% of 794 movements58.4% of 994 movements45.4% of 973 movements48.1% of 862 movements27.1% of 630 movements29.7% of 101 movements51.2% of 84 movements202320.0% of 85 movements21.2% of 85 movements38.5% of 122 movements23.1% of 325 movements25.3% of 590 movements52.8% of 861 movements62.9% of 1,022 movements56.1% of 1,011 movements42.9% of 864 movements35.1% of 501 movements30.2% of 96 movements46.5% of 71 movements202430.9% of 68 movements17.1% of 70 movements20.2% of 104 movements14.7% of 448 movements21.9% of 743 movements48.5% of 970 movements62.0% of 1,057 movements49.0% of 1,087 movements50.0% of 970 movements23.7% of 696 movements19.8% of 126 movements34.4% of 93 movements202528.0% of 82 movements20.0% of 80 movements11.7% of 120 movements11.0% of 417 movements21.9% of 766 movements34.1% of 981 movements39.3% of 1,103 movements34.4% of 1,105 movements40.4% of 960 movements24.1% of 668 movements12.6% of 127 movements20.8% of 77 movements202626.0% of 77 movements23.0% of 74 movements14.0% of 121 movements12.7% of 394 movements23.9% of 850 movements34.8% of 1,051 movementsno datano datano datano datano datano data
Month-by-month table: median, observed range and sample
MonthMedianObserved rangeSample
Jan26.0%17.1–31.2%7 months, 445 flights
Feb20.5%10.5–32.6%7 months, 437 flights
Mar20.2%11.7–38.5%7 months, 718 flights
Apr14.7%11.0–28.5%7 months, 2,384 flights
May23.9%19.0–42.9%7 months, 4,925 flights
Jun41.3%34.1–53.4%7 months, 6,415 flights
Jul53.6%39.3–62.9%6 months, 6,093 flights
Aug43.4%34.4–56.1%6 months, 6,157 flights
Sep41.7%31.3–50.0%6 months, 5,369 flights
Oct24.3%20.8–35.1%6 months, 3,638 flights
Nov18.5%9.3–30.2%6 months, 583 flights
Dec39.0%20.8–51.2%6 months, 443 flights
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Which routes have the best and worst record?

Lowest disruption: GLA ↔ SPLIT, 11.5% of 52 movements. Highest disruption: STN ↔ ZADAR, 50.7% of 142 movements.

The airline table uses this carrier on each route; airport and country tables combine carriers. Each figure is arrivals into its UK airport. Only sufficiently large exact samples enter the ordered comparison.

Observed disruption share by optionGla ↔ Split11.5% of 52 flightsBhx ↔ Pula13.8% of 94 flightsBrs ↔ Split14.0% of 178 flightsLgw ↔ Zadar42.9% of 56 flightsStn ↔ Pula47.6% of 82 flightsStn ↔ Zadar50.7% of 142 flights
All route comparisons and sample flags
RouteDisruptionCancellationsSample flag
GLA ↔ SPLIT11.5% of 52 movementsno events in 52 movementsdescriptive comparison
BHX ↔ PULA13.8% of 94 movementsno events in 94 movementsdescriptive comparison
BRS ↔ SPLIT14.0% of 178 movements0.6% of 178 movementsdescriptive comparison
EDI ↔ DUBROVNIK15.3% of 131 movementsno events in 131 movementsdescriptive comparison
NCL ↔ DUBROVNIK15.9% of 63 movements1.6% of 63 movementsdescriptive comparison
BHX ↔ SPLIT18.7% of 75 movementsno events in 75 movementsdescriptive comparison
Stansted ↔ Zagreb19.5% of 548 movementsno events in 548 movementsdescriptive comparison
LPL ↔ SPLIT21.6% of 51 movementsno events in 51 movementsdescriptive comparison
STN ↔ SPLIT21.9% of 105 movementsno events in 105 movementsdescriptive comparison
EMA ↔ DUBROVNIK24.1% of 79 movementsno events in 79 movementsdescriptive comparison
BRS ↔ PULA25.7% of 70 movementsno events in 70 movementsdescriptive comparison
STN ↔ DUBROVNIK25.8% of 372 movements6.2% of 372 movementsdescriptive comparison
MAN ↔ PULA26.1% of 92 movementsno events in 92 movementsdescriptive comparison
LTN ↔ SPLIT29.5% of 458 movementsno events in 458 movementsdescriptive comparison
BHX ↔ DUBROVNIK32.1% of 134 movements0.7% of 134 movementsdescriptive comparison
LBA ↔ DUBROVNIK33.0% of 109 movementsno events in 109 movementsdescriptive comparison
LHR ↔ ZAGREB33.6% of 348 movements0.6% of 348 movementsdescriptive comparison
BRS ↔ DUBROVNIK34.5% of 165 movements0.6% of 165 movementsdescriptive comparison
MAN ↔ ZAGREB34.8% of 69 movementsno events in 69 movementsdescriptive comparison
Gatwick ↔ Split35.1% of 589 movementsno events in 589 movementsdescriptive comparison
LHR ↔ DUBROVNIK35.5% of 172 movements1.7% of 172 movementsdescriptive comparison
Gatwick ↔ Dubrovnik35.7% of 778 movements1.3% of 778 movementsdescriptive comparison
MAN ↔ SPLIT35.9% of 248 movementsno events in 248 movementsdescriptive comparison
LGW ↔ PULA37.0% of 138 movementsno events in 138 movementsdescriptive comparison
MAN ↔ DUBROVNIK39.7% of 330 movements0.9% of 330 movementsdescriptive comparison
LHR ↔ SPLIT41.3% of 271 movements0.4% of 271 movementsdescriptive comparison
LGW ↔ ZADAR42.9% of 56 movementsno events in 56 movementsdescriptive comparison
STN ↔ PULA47.6% of 82 movementsno events in 82 movementsdescriptive comparison
STN ↔ ZADAR50.7% of 142 movementsno events in 142 movementsdescriptive comparison
BFS ↔ DUBROVNIK10.7% of 28 movements — small sample, not rankedno events in 28 movements — small sample, not rankedsmall sample; not ranked
BHX ↔ ZADAR53.8% of 39 movements — small sample, not rankedno events in 39 movements — small sample, not rankedsmall sample; not ranked
BOH ↔ ZADAR25.7% of 35 movements — small sample, not rankedno events in 35 movements — small sample, not rankedsmall sample; not ranked
CWL ↔ DUBROVNIK40.0% of 25 movements — small sample, not rankedno events in 25 movements — small sample, not rankedsmall sample; not ranked
EDI ↔ SPLIT14.7% of 34 movements — small sample, not rankedno events in 34 movements — small sample, not rankedsmall sample; not ranked
EDI ↔ ZADAR34.3% of 35 movements — small sample, not rankedno events in 35 movements — small sample, not rankedsmall sample; not ranked
GLA ↔ DUBROVNIK38.9% of 36 movements — small sample, not ranked2.8% of 36 movements — small sample, not rankedsmall sample; not ranked
LBA ↔ SPLIT8.2% of 49 movements — small sample, not rankedno events in 49 movements — small sample, not rankedsmall sample; not ranked
LBA ↔ ZADAR20.0% of 35 movements — small sample, not rankedno events in 35 movements — small sample, not rankedsmall sample; not ranked
LCY ↔ SPLIT50.0% of 24 movements — small sample, not rankedno events in 24 movements — small sample, not rankedsmall sample; not ranked
LPL ↔ ZADAR50.0% of 34 movements — small sample, not rankedno events in 34 movements — small sample, not rankedsmall sample; not ranked
LTN ↔ PULA25.5% of 47 movements — small sample, not rankedno events in 47 movements — small sample, not rankedsmall sample; not ranked
MAN ↔ ZADAR53.7% of 41 movements — small sample, not ranked4.9% of 41 movements — small sample, not rankedsmall sample; not ranked
NCL ↔ ZADAR11.4% of 44 movements — small sample, not rankedno events in 44 movements — small sample, not rankedsmall sample; not ranked
STN ↔ OSIJEK48.6% of 35 movements — small sample, not rankedno events in 35 movements — small sample, not rankedsmall sample; not ranked
STN ↔ RIJEKA51.5% of 33 movements — small sample, not rankedno events in 33 movements — small sample, not rankedsmall sample; not ranked
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Which UK airports appear in this record?

17 published groups have enough arrivals to describe.

These operations are not matched for season, aircraft or time of day. The table makes no causal comparison.

UK airportDisruptionSample flag
Belfast International18.8% of 32 movements — small sample, not rankedsmall sample; not ranked
Birmingham26.8% of 343 movementsdescriptive comparison
Bournemouth25.7% of 35 movements — small sample, not rankedsmall sample; not ranked
Bristol24.2% of 413 movementsdescriptive comparison
Cardiff Wales40.0% of 25 movements — small sample, not rankedsmall sample; not ranked
Edinburgh18.5% of 200 movementsdescriptive comparison
East Midlands International28.7% of 87 movementsdescriptive comparison
Glasgow25.9% of 108 movementsdescriptive comparison
Leeds Bradford24.4% of 193 movementsdescriptive comparison
London City50.0% of 24 movements — small sample, not rankedsmall sample; not ranked
Gatwick35.9% of 1,562 movementsdescriptive comparison
Heathrow36.7% of 791 movementsdescriptive comparison
Liverpool (John Lennon)32.9% of 85 movementsdescriptive comparison
Luton29.1% of 505 movementsdescriptive comparison
Manchester37.2% of 780 movementsdescriptive comparison
Newcastle14.0% of 107 movementsdescriptive comparison
Stansted28.2% of 1,317 movementsdescriptive comparison
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Arrivals vs departures

31.3% of 6,607 movements arrivals were disrupted, against 29.2% of 6,562 movements departures.

The directions have separate denominators. A departure delay does not establish late arrival at the final destination; legal conditions differ by direction and carrier.

Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Movements past the three-hour mark

0.7% of 6,607 movements were more than three hours late over July 2025 to June 2026.

Cancellation is counted separately and is not a three-hour delay. Monthly counts cannot establish a passenger claim.

Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Facts about this record

Croatia appears from Jan 2018 to Jun 2026 with 40,865 arrivals.

The bounds describe the published record, not every commercial service. Final point is not necessarily a nonstop destination.

Archive route pairs: 90.

Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

What this data cannot tell you

Delay cause, individual passenger experience, commercial decisions and future performance are not established here.

Also absent are aircraft type, within-month time-of-day splits and cancellations made ahead of the short-notice reporting window.

0 operations (0.00%) excluded because their published percentages could not be reconciled to whole numbers. Excluded operations enter neither the numerator nor the denominator. Outcome figures and comparisons are unavailable when the excluded share exceeds fifteen percent.

Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Quick answers

These answers use the same populations and window as the tables above.

Every percentage retains its denominator.

How disrupted are these arrivals?

31.3% of 6,607 movements over July 2025 to June 2026.

How often are they cancelled?

0.8% of 6,607 movements at short notice.

How late is late?

30.4–61.0 minutes; delayed denominator 2,018–3,835

Are services improving?

The monthly line records past changes; it is not a forecast or a causal comparison.

Which routes are compared?

The route table uses separately identified UK airport and final-point pairs, with small samples flagged.

Does this cover my flight?

Only published aggregate movements; the circumstances of any individual flight are unknown.

Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

How this was calculated

Source: CAA punctuality statistics · snapshot 17/08/2026 10:24 · method route-record-v2.1 · Versioned claims, formulas and entity mapping.

Integer bucket counts are recovered from rounding intervals over D=M+C+U with their sum constrained to M. Ambiguous counts remain ranges; failed reconciliation is quarantined.

Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.

Your trip has already gone wrong

The monthly line and events table show whether your month was typical or unusual in the published record.

Nothing here decides an individual case or what a passenger may be owed.

CAA: the official route to complain
Definitions, denominators and limits

Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.