UK FLIGHT DELAY INDEX

derived from CAA punctuality statistics for UK reporting airports

How often are these flights late or cancelled?

Eurowings Luftverkehrs

In the twelve months from July 2025 to June 2026, 27.9% of 6,789 movements arriving into the UK were disrupted — more than fifteen minutes late or cancelled at short notice.

Put the other way round, 72.1% of 6,789 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

27.9% of 6,789 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
27.9% of 6,789 movements1.1% of 6,789 movements20.7–49.8 minutes; delayed denominator 1,821–4,0560.2% of 6,789 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?

0.2% of 6,789 movements passed the three-hour mark.

The ladder shows how many movements crossed each threshold. Cancellations are separate: 1.1% of 6,789 movements.

DelayShare and sampleOne event per movements
More than 15 minutes26.8% of 6,789 movements3.7
More than 30 minutes13.2% of 6,789 movements7.6
More than 60 minutes4.0% of 6,789 movements25.0
More than 120 minutes0.8% of 6,789 movements130.6
More than 180 minutes0.2% of 6,789 movements522.2
More than 360 minutesno events in 6,789 movementsNo observed events; this is not zero risk.
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?

0.8% of 6,789 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 early3425.0%15–1 early2,31534.1%0–15 late2,23532.9%16–3092513.6%31–606249.2%61…1202203.2%121…180390.6%181…360130.2%>36000.0%D=6,789
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, 0.7% of 302 movements. Worst month: Sep 2024, 56.4% of 603 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: 38.1%; sample: 9612018Feb 2018: 33.4%; sample: 889Mar 2018: 34.9%; sample: 983Apr 2018: 27.7%; sample: 932May 2018: 30.9%; sample: 970Jun 2018: 42.8%; sample: 871Jul 2018: 38.3%; sample: 937Aug 2018: 37.4%; sample: 943Sep 2018: 40.4%; sample: 888Oct 2018: 33.2%; sample: 930Nov 2018: 16.6%; sample: 871Dec 2018: 23.1%; sample: 844Jan 2019: 18.7%; sample: 8662019Feb 2019: 12.1%; sample: 801Mar 2019: 21.0%; sample: 880Apr 2019: 9.6%; sample: 654May 2019: 13.3%; sample: 722Jun 2019: 27.5%; sample: 713Jul 2019: 24.4%; sample: 754Aug 2019: 22.7%; sample: 740Sep 2019: 21.1%; sample: 726Oct 2019: 24.9%; sample: 726Nov 2019: 3.9%; sample: 609Dec 2019: 11.4%; sample: 623Jan 2020: 5.4%; sample: 5972020Feb 2020: 27.6%; sample: 555Mar 2020: 10.9%; sample: 430Apr 2020: 0.0%; sample: 25May 2020: 0.0%; sample: 29Jun 2020: 4.4%; sample: 90Jul 2020: 3.3%; sample: 153Aug 2020: 7.1%; sample: 198Sep 2020: 0.7%; sample: 302Oct 2020: 2.7%; sample: 223Nov 2020: 0.9%; sample: 112Dec 2020: 11.5%; sample: 78Jan 2021: 0.0%; sample: 252021Feb 2021: suppressed: fewer than twenty movements×Mar 2021: 0.0%; sample: 26Apr 2021: 4.1%; sample: 74May 2021: 7.0%; sample: 57Jun 2021: 10.3%; sample: 29Jul 2021: 16.0%; sample: 25Aug 2021: 5.3%; sample: 75Sep 2021: 9.4%; sample: 171Oct 2021: 15.7%; sample: 229Nov 2021: 7.1%; sample: 297Dec 2021: 7.0%; sample: 270Jan 2022: 5.8%; sample: 1032022Feb 2022: 17.2%; sample: 174Mar 2022: 11.5%; sample: 365Apr 2022: 15.2%; sample: 429May 2022: 26.8%; sample: 537Jun 2022: 50.0%; sample: 496Jul 2022: 44.0%; sample: 430Aug 2022: 30.9%; sample: 424Sep 2022: 41.2%; sample: 403Oct 2022: 24.9%; sample: 361Nov 2022: 7.0%; sample: 460Dec 2022: 21.9%; sample: 430Jan 2023: 12.4%; sample: 3312023Feb 2023: 13.1%; sample: 397Mar 2023: 26.6%; sample: 473Apr 2023: 26.3%; sample: 505May 2023: 21.3%; sample: 558Jun 2023: 31.6%; sample: 529Jul 2023: 39.8%; sample: 527Aug 2023: 40.4%; sample: 540Sep 2023: 35.6%; sample: 533Oct 2023: 28.6%; sample: 535Nov 2023: 18.0%; sample: 478Dec 2023: 30.5%; sample: 466Jan 2024: 19.1%; sample: 3822024Feb 2024: 18.4%; sample: 435Mar 2024: 19.5%; sample: 476Apr 2024: 32.2%; sample: 537May 2024: 31.2%; sample: 608Jun 2024: 42.4%; sample: 622Jul 2024: 52.8%; sample: 616Aug 2024: 44.7%; sample: 591Sep 2024: 56.4%; sample: 603Oct 2024: 35.0%; sample: 577Nov 2024: 13.1%; sample: 513Dec 2024: 29.0%; sample: 510Jan 2025: 21.4%; sample: 4682025Feb 2025: 9.6%; sample: 460Mar 2025: 14.9%; sample: 509Apr 2025: 10.3%; sample: 561May 2025: 17.4%; sample: 626Jun 2025: 22.7%; sample: 608Jul 2025: 30.7%; sample: 629Aug 2025: 32.8%; sample: 601Sep 2025: 38.2%; sample: 594Oct 2025: 29.2%; sample: 582Nov 2025: 19.2%; sample: 506Dec 2025: 29.0%; sample: 507Jan 2026: 33.4%; sample: 4072026Feb 2026: 21.0%; sample: 461Mar 2026: 21.4%; sample: 541Apr 2026: 21.7%; sample: 614May 2026: 25.8%; sample: 679Jun 2026: 31.3%; sample: 668Pandemic regime Jun 2020Summer 2022 breakdown Jul 2022NATS system failure Aug 2023Heathrow fire closure Mar 2025100%0%
Every monthly observation
MonthDisruption on arrivals
Jan 201838.1% of 961 movements
Feb 201833.4% of 889 movements
Mar 201834.9% of 983 movements
Apr 201827.7% of 932 movements
May 201830.9% of 970 movements
Jun 201842.8% of 871 movements
Jul 201838.3% of 937 movements
Aug 201837.4% of 943 movements
Sep 201840.4% of 888 movements
Oct 201833.2% of 930 movements
Nov 201816.6% of 871 movements
Dec 201823.1% of 844 movements
Jan 201918.7% of 866 movements
Feb 201912.1% of 801 movements
Mar 201921.0% of 880 movements
Apr 20199.6% of 654 movements
May 201913.3% of 722 movements
Jun 201927.5% of 713 movements
Jul 201924.4% of 754 movements
Aug 201922.7% of 740 movements
Sep 201921.1% of 726 movements
Oct 201924.9% of 726 movements
Nov 20193.9% of 609 movements
Dec 201911.4% of 623 movements
Jan 20205.4% of 597 movements
Feb 202027.6% of 555 movements
Mar 202010.9% of 430 movements
Apr 2020no events in 25 movements — small sample, not ranked
May 2020no events in 29 movements — small sample, not ranked
Jun 20204.4% of 90 movements
Jul 20203.3% of 153 movements
Aug 20207.1% of 198 movements
Sep 20200.7% of 302 movements
Oct 20202.7% of 223 movements
Nov 20200.9% of 112 movements
Dec 202011.5% of 78 movements
Jan 2021no events in 25 movements — small sample, not ranked
Feb 2021suppressed: fewer than twenty movements
Mar 2021no events in 26 movements — small sample, not ranked
Apr 20214.1% of 74 movements
May 20217.0% of 57 movements
Jun 202110.3% of 29 movements — small sample, not ranked
Jul 202116.0% of 25 movements — small sample, not ranked
Aug 20215.3% of 75 movements
Sep 20219.4% of 171 movements
Oct 202115.7% of 229 movements
Nov 20217.1% of 297 movements
Dec 20217.0% of 270 movements
Jan 20225.8% of 103 movements
Feb 202217.2% of 174 movements
Mar 202211.5% of 365 movements
Apr 202215.2% of 429 movements
May 202226.8% of 537 movements
Jun 202250.0% of 496 movements
Jul 202244.0% of 430 movements
Aug 202230.9% of 424 movements
Sep 202241.2% of 403 movements
Oct 202224.9% of 361 movements
Nov 20227.0% of 460 movements
Dec 202221.9% of 430 movements
Jan 202312.4% of 331 movements
Feb 202313.1% of 397 movements
Mar 202326.6% of 473 movements
Apr 202326.3% of 505 movements
May 202321.3% of 558 movements
Jun 202331.6% of 529 movements
Jul 202339.8% of 527 movements
Aug 202340.4% of 540 movements
Sep 202335.6% of 533 movements
Oct 202328.6% of 535 movements
Nov 202318.0% of 478 movements
Dec 202330.5% of 466 movements
Jan 202419.1% of 382 movements
Feb 202418.4% of 435 movements
Mar 202419.5% of 476 movements
Apr 202432.2% of 537 movements
May 202431.2% of 608 movements
Jun 202442.4% of 622 movements
Jul 202452.8% of 616 movements
Aug 202444.7% of 591 movements
Sep 202456.4% of 603 movements
Oct 202435.0% of 577 movements
Nov 202413.1% of 513 movements
Dec 202429.0% of 510 movements
Jan 202521.4% of 468 movements
Feb 20259.6% of 460 movements
Mar 202514.9% of 509 movements
Apr 202510.3% of 561 movements
May 202517.4% of 626 movements
Jun 202522.7% of 608 movements
Jul 202530.7% of 629 movements
Aug 202532.8% of 601 movements
Sep 202538.2% of 594 movements
Oct 202529.2% of 582 movements
Nov 202519.2% of 506 movements
Dec 202529.0% of 507 movements
Jan 202633.4% of 407 movements
Feb 202621.0% of 461 movements
Mar 202621.4% of 541 movements
Apr 202621.7% of 614 movements
May 202625.8% of 679 movements
Jun 202631.3% of 668 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 2020Arrivals4.4% of 90 movements15.0% across 6,527 flightsreturned the next month
Pandemic regime · Jun 2020Departures5.4% of 92 movements19.2% across 6,520 flightsreturned the next month
Summer 2022 breakdown · Jul 2022Arrivals44.0% of 430 movements15.6% across 3,171 flightsreturned after 4 months
Summer 2022 breakdown · Jul 2022Departures63.8% of 428 movements19.3% across 3,167 flightsreturned after 4 months
NATS system failure · Aug 2023Arrivals40.4% of 540 movements24.8% across 5,398 flightsreturned after 3 months
NATS system failure · Aug 2023Departures54.4% of 537 movements35.7% across 5,395 flightsreturned after 3 months
Heathrow fire closure · Mar 2025Arrivals14.9% of 509 movements32.3% across 6,581 flightsreturned the next month
Heathrow fire closure · Mar 2025Departures20.2% of 509 movements37.9% across 6,585 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: Sep, 39.3% across 6 months. Lowest median: Nov, 14.9% across 6 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 nJanFebMarAprMayJunJulAugSepOctNovDec201918.7% of 866 movements12.1% of 801 movements21.0% of 880 movements9.6% of 654 movements13.3% of 722 movements27.5% of 713 movements24.4% of 754 movements22.7% of 740 movements21.1% of 726 movements24.9% of 726 movements3.9% of 609 movements11.4% of 623 movements20205.4% of 597 movements27.6% of 555 movements10.9% of 430 movementsno events in 25 movements †no events in 29 movements †4.4% of 90 movements3.3% of 153 movements7.1% of 198 movements0.7% of 302 movements2.7% of 223 movements0.9% of 112 movements11.5% of 78 movements2021no events in 25 movements †suppressed: fewer than twenty movementsno events in 26 movements †4.1% of 74 movements7.0% of 57 movements10.3% of 29 movements †16.0% of 25 movements †5.3% of 75 movements9.4% of 171 movements15.7% of 229 movements7.1% of 297 movements7.0% of 270 movements20225.8% of 103 movements17.2% of 174 movements11.5% of 365 movements15.2% of 429 movements26.8% of 537 movements50.0% of 496 movements44.0% of 430 movements30.9% of 424 movements41.2% of 403 movements24.9% of 361 movements7.0% of 460 movements21.9% of 430 movements202312.4% of 331 movements13.1% of 397 movements26.6% of 473 movements26.3% of 505 movements21.3% of 558 movements31.6% of 529 movements39.8% of 527 movements40.4% of 540 movements35.6% of 533 movements28.6% of 535 movements18.0% of 478 movements30.5% of 466 movements202419.1% of 382 movements18.4% of 435 movements19.5% of 476 movements32.2% of 537 movements31.2% of 608 movements42.4% of 622 movements52.8% of 616 movements44.7% of 591 movements56.4% of 603 movements35.0% of 577 movements13.1% of 513 movements29.0% of 510 movements202521.4% of 468 movements9.6% of 460 movements14.9% of 509 movements10.3% of 561 movements17.4% of 626 movements22.7% of 608 movements30.7% of 629 movements32.8% of 601 movements38.2% of 594 movements29.2% of 582 movements19.2% of 506 movements29.0% of 507 movements202633.4% of 407 movements21.0% of 461 movements21.4% of 541 movements21.7% of 614 movements25.8% of 679 movements31.3% of 668 movementsno datano datano datano datano datano data
Month-by-month table: median, observed range and sample
MonthMedianObserved rangeSample
Jan19.1%5.8–38.1%7 months, 3,518 flights
Feb17.2%9.6–33.4%7 months, 3,617 flights
Mar21.0%11.5–34.9%7 months, 4,227 flights
Apr21.7%9.6–32.2%7 months, 4,232 flights
May25.8%13.3–31.2%7 months, 4,700 flights
Jun31.6%22.7–50.0%7 months, 4,507 flights
Jul39.1%24.4–52.8%6 months, 3,893 flights
Aug35.1%22.7–44.7%6 months, 3,839 flights
Sep39.3%21.1–56.4%6 months, 3,747 flights
Oct28.9%24.9–35.0%6 months, 3,711 flights
Nov14.9%3.9–19.2%6 months, 3,437 flights
Dec26.0%11.4–30.5%6 months, 3,380 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: LHR ↔ BERLIN-BRANDENBURG, 9.3% of 161 movements. Highest disruption: EDI ↔ COLOGNE-BONN, 41.6% of 185 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 optionLhr ↔ Berlin-Brandenburg9.3% of 161 flightsBhx ↔ Dusseldorf21.7% of 609 flightsMan ↔ Dusseldorf23.2% of 684 flightsLhr ↔ Cologne-Bonn32.3% of 594 flightsEdi ↔ Stuttgart40.3% of 129 flightsEdi ↔ Cologne-Bonn41.6% of 185 flights
All route comparisons and sample flags
RouteDisruptionCancellationsSample flag
Heathrow ↔ Berlin Brandenburg9.3% of 161 movements1.9% of 161 movementsdescriptive comparison
Birmingham ↔ Dusseldorf21.7% of 609 movements1.8% of 609 movementsdescriptive comparison
Manchester ↔ Dusseldorf23.2% of 684 movements1.0% of 684 movementsdescriptive comparison
NCL ↔ DUSSELDORF24.1% of 108 movements0.9% of 108 movementsdescriptive comparison
Heathrow ↔ Dusseldorf26.0% of 1,550 movements0.5% of 1,550 movementsdescriptive comparison
LGW ↔ COLOGNE-BONN26.0% of 173 movements2.3% of 173 movementsdescriptive comparison
LGW ↔ STUTTGART29.7% of 64 movements1.6% of 64 movementsdescriptive comparison
Heathrow ↔ Stuttgart29.8% of 920 movements0.7% of 920 movementsdescriptive comparison
EDI ↔ DUSSELDORF29.9% of 244 movements0.4% of 244 movementsdescriptive comparison
MAN ↔ STUTTGART30.8% of 159 movements8.2% of 159 movementsdescriptive comparison
MAN ↔ HAMBURG31.8% of 154 movements1.9% of 154 movementsdescriptive comparison
Heathrow ↔ Hamburg32.1% of 973 movements0.8% of 973 movementsdescriptive comparison
LHR ↔ COLOGNE-BONN32.3% of 594 movements0.3% of 594 movementsdescriptive comparison
EDI ↔ STUTTGART40.3% of 129 movements2.3% of 129 movementsdescriptive comparison
EDI ↔ COLOGNE-BONN41.6% of 185 movements2.2% of 185 movementsdescriptive comparison
NCL ↔ BERLIN-BRANDENBURG15.9% of 44 movements — small sample, not rankedno events in 44 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?

6 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
Birmingham22.3% of 627 movementsdescriptive comparison
Edinburgh36.2% of 558 movementsdescriptive comparison
Gatwick27.0% of 237 movementsdescriptive comparison
Heathrow28.5% of 4,199 movementsdescriptive comparison
Manchester25.8% of 999 movementsdescriptive comparison
Newcastle21.7% of 152 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

27.9% of 6,789 movements arrivals were disrupted, against 33.6% of 6,788 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

0.2% of 6,789 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

Eurowings Luftverkehrs appears from Jan 2018 to Jun 2026 with 50,887 arrivals.

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

Archive route pairs: 74.

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?

27.9% of 6,789 movements over July 2025 to June 2026.

How often are they cancelled?

1.1% of 6,789 movements at short notice.

How late is late?

20.7–49.8 minutes; delayed denominator 1,821–4,056

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.