UK FLIGHT DELAY INDEX

derived from CAA punctuality statistics for UK reporting airports

How often are these flights late or cancelled?

Malta

In the twelve months from July 2025 to June 2026, 36.4% of 6,312 movements arriving into the UK were disrupted — more than fifteen minutes late or cancelled at short notice.

Put the other way round, 63.6% of 6,312 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

36.4% of 6,312 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
36.4% of 6,312 movements0.2% of 6,312 movements30.7–54.9 minutes; delayed denominator 2,285–3,8810.5% of 6,312 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?

0.5% of 6,312 movements passed the three-hour mark.

The ladder shows how many movements crossed each threshold. Cancellations are separate: 0.2% of 6,312 movements.

DelayShare and sampleOne event per movements
More than 15 minutes36.2% of 6,312 movements2.8
More than 30 minutes20.7% of 6,312 movements4.8
More than 60 minutes8.3% of 6,312 movements12.1
More than 120 minutes1.7% of 6,312 movements59.5
More than 180 minutes0.5% of 6,312 movements217.7
More than 360 minutes0.1% of 6,312 movements701.3
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?

1.7% of 6,312 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 early84813.4%15–1 early1,57224.9%0–15 late1,59625.3%16–3098115.5%31–6078312.4%61…1204156.6%121…180771.2%181…360200.3%>36090.1%D=6,315
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, 1.2% of 240 movements. Worst month: Jul 2023, 68.5% of 426 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: 25.3%; sample: 3042018Feb 2018: 21.2%; sample: 293Mar 2018: 32.5%; sample: 357Apr 2018: 30.3%; sample: 459May 2018: 35.5%; sample: 524Jun 2018: 45.6%; sample: 504Jul 2018: 45.5%; sample: 517Aug 2018: 42.5%; sample: 530Sep 2018: 34.7%; sample: 493Oct 2018: 29.8%; sample: 486Nov 2018: 23.2%; sample: 332Dec 2018: 52.4%; sample: 328Jan 2019: 31.1%; sample: 3092019Feb 2019: 31.1%; sample: 302Mar 2019: 27.1%; sample: 362Apr 2019: 27.7%; sample: 491May 2019: 29.8%; sample: 560Jun 2019: 30.4%; sample: 533Jul 2019: 45.6%; sample: 535Aug 2019: 38.7%; sample: 548Sep 2019: 32.4%; sample: 524Oct 2019: 31.1%; sample: 527Nov 2019: 19.5%; sample: 359Dec 2019: 42.1%; sample: 361Jan 2020: 20.0%; sample: 3102020Feb 2020: 51.8%; sample: 332Mar 2020: 27.9%; sample: 269Apr 2020: 4.5%; sample: 22May 2020: 4.2%; sample: 24Jun 2020: 0.0%; sample: 22Jul 2020: 10.7%; sample: 84Aug 2020: 6.6%; sample: 258Sep 2020: 1.2%; sample: 240Oct 2020: 3.2%; sample: 155Nov 2020: 1.9%; sample: 54Dec 2020: 28.2%; sample: 39Jan 2021: 32.1%; sample: 282021Feb 2021: suppressed: fewer than twenty movements×Mar 2021: suppressed: fewer than twenty movements×Apr 2021: suppressed: fewer than twenty movements×May 2021: 12.5%; sample: 32Jun 2021: 8.5%; sample: 118Jul 2021: 14.3%; sample: 322Aug 2021: 12.7%; sample: 393Sep 2021: 16.8%; sample: 364Oct 2021: 15.3%; sample: 406Nov 2021: 10.6%; sample: 199Dec 2021: 16.4%; sample: 207Jan 2022: 14.5%; sample: 1102022Feb 2022: 23.1%; sample: 130Mar 2022: 19.5%; sample: 221Apr 2022: 37.0%; sample: 322May 2022: 47.0%; sample: 336Jun 2022: 50.7%; sample: 345Jul 2022: 48.7%; sample: 355Aug 2022: 41.2%; sample: 369Sep 2022: 51.6%; sample: 347Oct 2022: 34.8%; sample: 333Nov 2022: 28.9%; sample: 249Dec 2022: 35.7%; sample: 244Jan 2023: 26.8%; sample: 2132023Feb 2023: 34.2%; sample: 222Mar 2023: 60.5%; sample: 291Apr 2023: 62.7%; sample: 399May 2023: 46.5%; sample: 415Jun 2023: 62.5%; sample: 421Jul 2023: 68.5%; sample: 426Aug 2023: 62.1%; sample: 441Sep 2023: 45.5%; sample: 415Oct 2023: 43.2%; sample: 424Nov 2023: 31.5%; sample: 314Dec 2023: 40.8%; sample: 314Jan 2024: 25.4%; sample: 2722024Feb 2024: 23.4%; sample: 295Mar 2024: 25.7%; sample: 369Apr 2024: 30.0%; sample: 484May 2024: 32.4%; sample: 531Jun 2024: 45.4%; sample: 509Jul 2024: 53.8%; sample: 519Aug 2024: 47.6%; sample: 527Sep 2024: 51.0%; sample: 512Oct 2024: 31.1%; sample: 495Nov 2024: 20.7%; sample: 363Dec 2024: 35.5%; sample: 332Jan 2025: 33.5%; sample: 2692025Feb 2025: 22.1%; sample: 348Mar 2025: 17.2%; sample: 425Apr 2025: 35.8%; sample: 570May 2025: 47.2%; sample: 616Jun 2025: 48.3%; sample: 584Jul 2025: 54.6%; sample: 619Aug 2025: 54.9%; sample: 512Sep 2025: 57.0%; sample: 607Oct 2025: 51.3%; sample: 497Nov 2025: 21.1%; sample: 370Dec 2025: 20.6%; sample: 428Jan 2026: 18.2%; sample: 3462026Feb 2026: 23.5%; sample: 395Mar 2026: 16.0%; sample: 512Apr 2026: 25.1%; sample: 666May 2026: 29.2%; sample: 689Jun 2026: 45.3%; sample: 671Pandemic regime Jun 2020Summer 2022 breakdown Jul 2022NATS system failure Aug 2023Heathrow fire closure Mar 2025100%0%
Every monthly observation
MonthDisruption on arrivals
Jan 201825.3% of 304 movements
Feb 201821.2% of 293 movements
Mar 201832.5% of 357 movements
Apr 201830.3% of 459 movements
May 201835.5% of 524 movements
Jun 201845.6% of 504 movements
Jul 201845.5% of 517 movements
Aug 201842.5% of 530 movements
Sep 201834.7% of 493 movements
Oct 201829.8% of 486 movements
Nov 201823.2% of 332 movements
Dec 201852.4% of 328 movements
Jan 201931.1% of 309 movements
Feb 201931.1% of 302 movements
Mar 201927.1% of 362 movements
Apr 201927.7% of 491 movements
May 201929.8% of 560 movements
Jun 201930.4% of 533 movements
Jul 201945.6% of 535 movements
Aug 201938.7% of 548 movements
Sep 201932.4% of 524 movements
Oct 201931.1% of 527 movements
Nov 201919.5% of 359 movements
Dec 201942.1% of 361 movements
Jan 202020.0% of 310 movements
Feb 202051.8% of 332 movements
Mar 202027.9% of 269 movements
Apr 20204.5% of 22 movements — small sample, not ranked
May 20204.2% of 24 movements — small sample, not ranked
Jun 2020no events in 22 movements — small sample, not ranked
Jul 202010.7% of 84 movements
Aug 20206.6% of 258 movements
Sep 20201.2% of 240 movements
Oct 20203.2% of 155 movements
Nov 20201.9% of 54 movements
Dec 202028.2% of 39 movements — small sample, not ranked
Jan 202132.1% of 28 movements — small sample, not ranked
Feb 2021suppressed: fewer than twenty movements
Mar 2021suppressed: fewer than twenty movements
Apr 2021suppressed: fewer than twenty movements
May 202112.5% of 32 movements — small sample, not ranked
Jun 20218.5% of 118 movements
Jul 202114.3% of 322 movements
Aug 202112.7% of 393 movements
Sep 202116.8% of 364 movements
Oct 202115.3% of 406 movements
Nov 202110.6% of 199 movements
Dec 202116.4% of 207 movements
Jan 202214.5% of 110 movements
Feb 202223.1% of 130 movements
Mar 202219.5% of 221 movements
Apr 202237.0% of 322 movements
May 202247.0% of 336 movements
Jun 202250.7% of 345 movements
Jul 202248.7% of 355 movements
Aug 202241.2% of 369 movements
Sep 202251.6% of 347 movements
Oct 202234.8% of 333 movements
Nov 202228.9% of 249 movements
Dec 202235.7% of 244 movements
Jan 202326.8% of 213 movements
Feb 202334.2% of 222 movements
Mar 202360.5% of 291 movements
Apr 202362.7% of 399 movements
May 202346.5% of 415 movements
Jun 202362.5% of 421 movements
Jul 202368.5% of 426 movements
Aug 202362.1% of 441 movements
Sep 202345.5% of 415 movements
Oct 202343.2% of 424 movements
Nov 202331.5% of 314 movements
Dec 202340.8% of 314 movements
Jan 202425.4% of 272 movements
Feb 202423.4% of 295 movements
Mar 202425.7% of 369 movements
Apr 202430.0% of 484 movements
May 202432.4% of 531 movements
Jun 202445.4% of 509 movements
Jul 202453.8% of 519 movements
Aug 202447.6% of 527 movements
Sep 202451.0% of 512 movements
Oct 202431.1% of 495 movements
Nov 202420.7% of 363 movements
Dec 202435.5% of 332 movements
Jan 202533.5% of 269 movements
Feb 202522.1% of 348 movements
Mar 202517.2% of 425 movements
Apr 202535.8% of 570 movements
May 202547.2% of 616 movements
Jun 202548.3% of 584 movements
Jul 202554.6% of 619 movements
Aug 202554.9% of 512 movements
Sep 202557.0% of 607 movements
Oct 202551.3% of 497 movements
Nov 202521.1% of 370 movements
Dec 202520.6% of 428 movements
Jan 202618.2% of 346 movements
Feb 202623.5% of 395 movements
Mar 202616.0% of 512 movements
Apr 202625.1% of 666 movements
May 202629.2% of 689 movements
Jun 202645.3% of 671 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 2020Arrivalsno events in 22 movements — small sample, not ranked29.0% across 4,344 flightsreturned the next 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 2022Arrivals48.7% of 355 movements23.1% across 3,355 flightsstill above it 8 months later
Summer 2022 breakdown · Jul 2022Departures56.4% of 353 movements19.4% across 3,362 flightsstill above it 8 months later
NATS system failure · Aug 2023Arrivals62.1% of 441 movements46.2% across 3,929 flightsreturned the next month
NATS system failure · Aug 2023Departures50.9% of 436 movements43.5% across 3,923 flightsreturned after 2 months
Heathrow fire closure · Mar 2025Arrivals17.2% of 425 movements35.7% across 5,258 flightsreturned after 8 months
Heathrow fire closure · Mar 2025Departures17.4% of 432 movements31.9% across 5,256 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, 51.2% across 6 months. Lowest median: Nov, 22.1% 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 nJanFebMarAprMayJunJulAugSepOctNovDec201931.1% of 309 movements31.1% of 302 movements27.1% of 362 movements27.7% of 491 movements29.8% of 560 movements30.4% of 533 movements45.6% of 535 movements38.7% of 548 movements32.4% of 524 movements31.1% of 527 movements19.5% of 359 movements42.1% of 361 movements202020.0% of 310 movements51.8% of 332 movements27.9% of 269 movements4.5% of 22 movements †4.2% of 24 movements †no events in 22 movements †10.7% of 84 movements6.6% of 258 movements1.2% of 240 movements3.2% of 155 movements1.9% of 54 movements28.2% of 39 movements †202132.1% of 28 movements †suppressed: fewer than twenty movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movements12.5% of 32 movements †8.5% of 118 movements14.3% of 322 movements12.7% of 393 movements16.8% of 364 movements15.3% of 406 movements10.6% of 199 movements16.4% of 207 movements202214.5% of 110 movements23.1% of 130 movements19.5% of 221 movements37.0% of 322 movements47.0% of 336 movements50.7% of 345 movements48.7% of 355 movements41.2% of 369 movements51.6% of 347 movements34.8% of 333 movements28.9% of 249 movements35.7% of 244 movements202326.8% of 213 movements34.2% of 222 movements60.5% of 291 movements62.7% of 399 movements46.5% of 415 movements62.5% of 421 movements68.5% of 426 movements62.1% of 441 movements45.5% of 415 movements43.2% of 424 movements31.5% of 314 movements40.8% of 314 movements202425.4% of 272 movements23.4% of 295 movements25.7% of 369 movements30.0% of 484 movements32.4% of 531 movements45.4% of 509 movements53.8% of 519 movements47.6% of 527 movements51.0% of 512 movements31.1% of 495 movements20.7% of 363 movements35.5% of 332 movements202533.5% of 269 movements22.1% of 348 movements17.2% of 425 movements35.8% of 570 movements47.2% of 616 movements48.3% of 584 movements54.6% of 619 movements54.9% of 512 movements57.0% of 607 movements51.3% of 497 movements21.1% of 370 movements20.6% of 428 movements202618.2% of 346 movements23.5% of 395 movements16.0% of 512 movements25.1% of 666 movements29.2% of 689 movements45.3% of 671 movementsno datano datano datano datano datano data
Month-by-month table: median, observed range and sample
MonthMedianObserved rangeSample
Jan25.4%14.5–33.5%7 months, 1,823 flights
Feb23.4%21.2–34.2%7 months, 1,985 flights
Mar25.7%16.0–60.5%7 months, 2,537 flights
Apr30.3%25.1–62.7%7 months, 3,391 flights
May35.5%29.2–47.2%7 months, 3,671 flights
Jun45.6%30.4–62.5%7 months, 3,567 flights
Jul51.2%45.5–68.5%6 months, 2,971 flights
Aug45.0%38.7–62.1%6 months, 2,927 flights
Sep48.3%32.4–57.0%6 months, 2,898 flights
Oct33.0%29.8–51.3%6 months, 2,762 flights
Nov22.1%19.5–31.5%6 months, 1,987 flights
Dec38.2%20.6–52.4%6 months, 2,007 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 ↔ MALTA, 12.7% of 552 movements. Highest disruption: LTN ↔ MALTA, 54.7% of 278 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 ↔ Malta12.7% of 552 flightsBfs ↔ Malta16.3% of 92 flightsEma ↔ Malta22.3% of 121 flightsEdi ↔ Malta46.0% of 335 flightsMan ↔ Malta51.7% of 897 flightsLtn ↔ Malta54.7% of 278 flights
All route comparisons and sample flags
RouteDisruptionCancellationsSample flag
Heathrow ↔ Malta12.7% of 552 movementsno events in 552 movementsdescriptive comparison
BFS ↔ MALTA16.3% of 92 movementsno events in 92 movementsdescriptive comparison
EMA ↔ MALTA22.3% of 121 movementsno events in 121 movementsdescriptive comparison
LBA ↔ MALTA22.7% of 88 movementsno events in 88 movementsdescriptive comparison
NCL ↔ MALTA27.0% of 204 movementsno events in 204 movementsdescriptive comparison
GLA ↔ MALTA27.8% of 187 movements0.5% of 187 movementsdescriptive comparison
SEN ↔ MALTA32.2% of 149 movements0.7% of 149 movementsdescriptive comparison
LPL ↔ MALTA32.4% of 256 movementsno events in 256 movementsdescriptive comparison
Gatwick ↔ Malta35.1% of 1,574 movements0.3% of 1,574 movementsdescriptive comparison
BOH ↔ MALTA36.5% of 137 movementsno events in 137 movementsdescriptive comparison
Birmingham ↔ Malta37.2% of 514 movements0.2% of 514 movementsdescriptive comparison
Stansted ↔ Malta38.8% of 677 movementsno events in 677 movementsdescriptive comparison
BRS ↔ MALTA39.8% of 251 movements0.8% of 251 movementsdescriptive comparison
EDI ↔ MALTA46.0% of 335 movementsno events in 335 movementsdescriptive comparison
Manchester ↔ Malta51.7% of 897 movements0.1% of 897 movementsdescriptive comparison
LTN ↔ MALTA54.7% of 278 movementsno events in 278 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.

Which UK airports appear in this record?

16 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 International16.3% of 92 movementsdescriptive comparison
Birmingham37.2% of 514 movementsdescriptive comparison
Bournemouth36.5% of 137 movementsdescriptive comparison
Bristol39.8% of 251 movementsdescriptive comparison
Edinburgh46.0% of 335 movementsdescriptive comparison
East Midlands International22.3% of 121 movementsdescriptive comparison
Glasgow27.8% of 187 movementsdescriptive comparison
Leeds Bradford22.7% of 88 movementsdescriptive comparison
Gatwick35.1% of 1,574 movementsdescriptive comparison
Heathrow12.7% of 552 movementsdescriptive comparison
Liverpool (John Lennon)32.4% of 256 movementsdescriptive comparison
Luton54.7% of 278 movementsdescriptive comparison
Manchester51.7% of 897 movementsdescriptive comparison
Newcastle27.0% of 204 movementsdescriptive comparison
Southend32.2% of 149 movementsdescriptive comparison
Stansted38.8% of 677 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

36.4% of 6,312 movements arrivals were disrupted, against 25.8% of 6,314 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

0.5% of 6,312 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

Malta appears from Jan 2018 to Jun 2026 with 36,443 arrivals.

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

Archive route pairs: 21.

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?

36.4% of 6,312 movements over July 2025 to June 2026.

How often are they cancelled?

0.2% of 6,312 movements at short notice.

How late is late?

30.7–54.9 minutes; delayed denominator 2,285–3,881

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.