UK FLIGHT DELAY INDEX

derived from CAA punctuality statistics for UK reporting airports

How often are these flights late or cancelled?

Gibraltar

In the twelve months from July 2025 to June 2026, 24.7% of 1,445 movements arriving into the UK were disrupted — more than fifteen minutes late or cancelled at short notice.

Put the other way round, 75.3% of 1,445 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

24.7% of 1,445 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
24.7% of 1,445 movements2.1% of 1,445 movements37.1–79.3 minutes; delayed denominator 326–6591.4% of 1,445 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?

1.4% of 1,445 movements passed the three-hour mark.

The ladder shows how many movements crossed each threshold. Cancellations are separate: 2.1% of 1,445 movements.

DelayShare and sampleOne event per movements
More than 15 minutes22.6% of 1,445 movements4.4
More than 30 minutes13.3% of 1,445 movements7.5
More than 60 minutes6.4% of 1,445 movements15.7
More than 120 minutes3.0% of 1,445 movements33.6
More than 180 minutes1.4% of 1,445 movements72.2
More than 360 minutes0.2% of 1,445 movements481.7
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?

3.0% of 1,445 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 early31621.9%15–1 early43930.4%0–15 late33323.0%16–301349.3%31–601006.9%61…120493.4%121…180231.6%181…360171.2%>36030.2%D=1,445
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: May 2021, 6.9% of 58 movements. Worst month: Jun 2023, 51.0% of 153 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: 18.1%; sample: 722018Feb 2018: 11.4%; sample: 79Mar 2018: 37.1%; sample: 89Apr 2018: 39.0%; sample: 118May 2018: 24.4%; sample: 127Jun 2018: 30.3%; sample: 142Jul 2018: 26.8%; sample: 153Aug 2018: 26.5%; sample: 155Sep 2018: 20.6%; sample: 141Oct 2018: 35.5%; sample: 110Nov 2018: 24.2%; sample: 95Dec 2018: 27.7%; sample: 119Jan 2019: 13.9%; sample: 1012019Feb 2019: 14.7%; sample: 109Mar 2019: 25.4%; sample: 118Apr 2019: 21.9%; sample: 146May 2019: 19.4%; sample: 170Jun 2019: 29.9%; sample: 167Jul 2019: 37.2%; sample: 172Aug 2019: 37.4%; sample: 174Sep 2019: 37.1%; sample: 167Oct 2019: 22.2%; sample: 162Nov 2019: 10.3%; sample: 97Dec 2019: 26.7%; sample: 101Jan 2020: 18.1%; sample: 832020Feb 2020: 35.4%; sample: 96Mar 2020: 30.7%; sample: 88Apr 2020: suppressed: fewer than twenty movements×May 2020: 20.0%; sample: 20Jun 2020: suppressed: fewer than twenty movements×Jul 2020: 11.1%; sample: 27Aug 2020: 14.5%; sample: 110Sep 2020: 10.6%; sample: 104Oct 2020: 7.2%; sample: 97Nov 2020: 14.3%; sample: 28Dec 2020: 27.6%; sample: 58Jan 2021: 32.1%; sample: 282021Feb 2021: suppressed: fewer than twenty movements×Mar 2021: suppressed: fewer than twenty movements×Apr 2021: 5.0%; sample: 20May 2021: 6.9%; sample: 58Jun 2021: 10.2%; sample: 137Jul 2021: 11.4%; sample: 184Aug 2021: 14.9%; sample: 202Sep 2021: 13.0%; sample: 184Oct 2021: 11.6%; sample: 155Nov 2021: 15.2%; sample: 79Dec 2021: 17.8%; sample: 90Jan 2022: 12.3%; sample: 652022Feb 2022: 13.0%; sample: 69Mar 2022: 17.8%; sample: 101Apr 2022: 29.5%; sample: 149May 2022: 35.8%; sample: 162Jun 2022: 40.9%; sample: 149Jul 2022: 39.8%; sample: 161Aug 2022: 31.8%; sample: 151Sep 2022: 34.8%; sample: 164Oct 2022: 34.1%; sample: 170Nov 2022: 15.4%; sample: 91Dec 2022: 44.0%; sample: 84Jan 2023: 23.0%; sample: 742023Feb 2023: 21.5%; sample: 79Mar 2023: 36.6%; sample: 101Apr 2023: 34.6%; sample: 153May 2023: 42.9%; sample: 161Jun 2023: 51.0%; sample: 153Jul 2023: 40.5%; sample: 163Aug 2023: 49.1%; sample: 161Sep 2023: 45.7%; sample: 162Oct 2023: 40.3%; sample: 159Nov 2023: 33.3%; sample: 96Dec 2023: 37.8%; sample: 98Jan 2024: 30.0%; sample: 702024Feb 2024: 30.1%; sample: 83Mar 2024: 36.4%; sample: 99Apr 2024: 34.4%; sample: 128May 2024: 26.2%; sample: 130Jun 2024: 32.1%; sample: 137Jul 2024: 36.0%; sample: 136Aug 2024: 35.7%; sample: 143Sep 2024: 43.1%; sample: 130Oct 2024: 37.1%; sample: 124Nov 2024: 11.3%; sample: 97Dec 2024: 35.0%; sample: 100Jan 2025: 22.9%; sample: 832025Feb 2025: 14.6%; sample: 89Mar 2025: 33.0%; sample: 103Apr 2025: 23.1%; sample: 121May 2025: 22.8%; sample: 127Jun 2025: 19.4%; sample: 134Jul 2025: 37.2%; sample: 148Aug 2025: 22.1%; sample: 145Sep 2025: 31.6%; sample: 133Oct 2025: 22.1%; sample: 131Nov 2025: 19.8%; sample: 106Dec 2025: 22.9%; sample: 109Jan 2026: 26.5%; sample: 832026Feb 2026: 24.7%; sample: 85Mar 2026: 28.1%; sample: 121Apr 2026: 15.6%; sample: 128May 2026: 19.7%; sample: 132Jun 2026: 24.2%; sample: 124Pandemic regime Jun 2020Summer 2022 breakdown Jul 2022NATS system failure Aug 2023Heathrow fire closure Mar 2025100%0%
Every monthly observation
MonthDisruption on arrivals
Jan 201818.1% of 72 movements
Feb 201811.4% of 79 movements
Mar 201837.1% of 89 movements
Apr 201839.0% of 118 movements
May 201824.4% of 127 movements
Jun 201830.3% of 142 movements
Jul 201826.8% of 153 movements
Aug 201826.5% of 155 movements
Sep 201820.6% of 141 movements
Oct 201835.5% of 110 movements
Nov 201824.2% of 95 movements
Dec 201827.7% of 119 movements
Jan 201913.9% of 101 movements
Feb 201914.7% of 109 movements
Mar 201925.4% of 118 movements
Apr 201921.9% of 146 movements
May 201919.4% of 170 movements
Jun 201929.9% of 167 movements
Jul 201937.2% of 172 movements
Aug 201937.4% of 174 movements
Sep 201937.1% of 167 movements
Oct 201922.2% of 162 movements
Nov 201910.3% of 97 movements
Dec 201926.7% of 101 movements
Jan 202018.1% of 83 movements
Feb 202035.4% of 96 movements
Mar 202030.7% of 88 movements
Apr 2020suppressed: fewer than twenty movements
May 202020.0% of 20 movements — small sample, not ranked
Jun 2020suppressed: fewer than twenty movements
Jul 202011.1% of 27 movements — small sample, not ranked
Aug 202014.5% of 110 movements
Sep 202010.6% of 104 movements
Oct 20207.2% of 97 movements
Nov 202014.3% of 28 movements — small sample, not ranked
Dec 202027.6% of 58 movements
Jan 202132.1% of 28 movements — small sample, not ranked
Feb 2021suppressed: fewer than twenty movements
Mar 2021suppressed: fewer than twenty movements
Apr 20215.0% of 20 movements — small sample, not ranked
May 20216.9% of 58 movements
Jun 202110.2% of 137 movements
Jul 202111.4% of 184 movements
Aug 202114.9% of 202 movements
Sep 202113.0% of 184 movements
Oct 202111.6% of 155 movements
Nov 202115.2% of 79 movements
Dec 202117.8% of 90 movements
Jan 202212.3% of 65 movements
Feb 202213.0% of 69 movements
Mar 202217.8% of 101 movements
Apr 202229.5% of 149 movements
May 202235.8% of 162 movements
Jun 202240.9% of 149 movements
Jul 202239.8% of 161 movements
Aug 202231.8% of 151 movements
Sep 202234.8% of 164 movements
Oct 202234.1% of 170 movements
Nov 202215.4% of 91 movements
Dec 202244.0% of 84 movements
Jan 202323.0% of 74 movements
Feb 202321.5% of 79 movements
Mar 202336.6% of 101 movements
Apr 202334.6% of 153 movements
May 202342.9% of 161 movements
Jun 202351.0% of 153 movements
Jul 202340.5% of 163 movements
Aug 202349.1% of 161 movements
Sep 202345.7% of 162 movements
Oct 202340.3% of 159 movements
Nov 202333.3% of 96 movements
Dec 202337.8% of 98 movements
Jan 202430.0% of 70 movements
Feb 202430.1% of 83 movements
Mar 202436.4% of 99 movements
Apr 202434.4% of 128 movements
May 202426.2% of 130 movements
Jun 202432.1% of 137 movements
Jul 202436.0% of 136 movements
Aug 202435.7% of 143 movements
Sep 202443.1% of 130 movements
Oct 202437.1% of 124 movements
Nov 202411.3% of 97 movements
Dec 202435.0% of 100 movements
Jan 202522.9% of 83 movements
Feb 202514.6% of 89 movements
Mar 202533.0% of 103 movements
Apr 202523.1% of 121 movements
May 202522.8% of 127 movements
Jun 202519.4% of 134 movements
Jul 202537.2% of 148 movements
Aug 202522.1% of 145 movements
Sep 202531.6% of 133 movements
Oct 202522.1% of 131 movements
Nov 202519.8% of 106 movements
Dec 202522.9% of 109 movements
Jan 202626.5% of 83 movements
Feb 202624.7% of 85 movements
Mar 202628.1% of 121 movements
Apr 202615.6% of 128 movements
May 202619.7% of 132 movements
Jun 202624.2% of 124 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 2022Arrivals39.8% of 161 movements19.4% across 1,589 flightsreturned after 4 months
Summer 2022 breakdown · Jul 2022Departures46.3% of 162 movements21.8% across 1,607 flightsreturned after 4 months
NATS system failure · Aug 2023Arrivals49.1% of 161 movements34.2% across 1,544 flightsreturned after 3 months
NATS system failure · Aug 2023Departures40.1% of 162 movements32.7% across 1,552 flightsreturned after 2 months
Heathrow fire closure · Mar 2025Arrivals33.0% of 103 movements30.4% across 1,396 flightsreturned the next month
Heathrow fire closure · Mar 2025Departures20.8% of 106 movements24.4% across 1,405 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, 37.2% across 6 months. Lowest median: Feb, 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 nJanFebMarAprMayJunJulAugSepOctNovDec201913.9% of 101 movements14.7% of 109 movements25.4% of 118 movements21.9% of 146 movements19.4% of 170 movements29.9% of 167 movements37.2% of 172 movements37.4% of 174 movements37.1% of 167 movements22.2% of 162 movements10.3% of 97 movements26.7% of 101 movements202018.1% of 83 movements35.4% of 96 movements30.7% of 88 movementssuppressed: fewer than twenty movements20.0% of 20 movements †suppressed: fewer than twenty movements11.1% of 27 movements †14.5% of 110 movements10.6% of 104 movements7.2% of 97 movements14.3% of 28 movements †27.6% of 58 movements202132.1% of 28 movements †suppressed: fewer than twenty movementssuppressed: fewer than twenty movements5.0% of 20 movements †6.9% of 58 movements10.2% of 137 movements11.4% of 184 movements14.9% of 202 movements13.0% of 184 movements11.6% of 155 movements15.2% of 79 movements17.8% of 90 movements202212.3% of 65 movements13.0% of 69 movements17.8% of 101 movements29.5% of 149 movements35.8% of 162 movements40.9% of 149 movements39.8% of 161 movements31.8% of 151 movements34.8% of 164 movements34.1% of 170 movements15.4% of 91 movements44.0% of 84 movements202323.0% of 74 movements21.5% of 79 movements36.6% of 101 movements34.6% of 153 movements42.9% of 161 movements51.0% of 153 movements40.5% of 163 movements49.1% of 161 movements45.7% of 162 movements40.3% of 159 movements33.3% of 96 movements37.8% of 98 movements202430.0% of 70 movements30.1% of 83 movements36.4% of 99 movements34.4% of 128 movements26.2% of 130 movements32.1% of 137 movements36.0% of 136 movements35.7% of 143 movements43.1% of 130 movements37.1% of 124 movements11.3% of 97 movements35.0% of 100 movements202522.9% of 83 movements14.6% of 89 movements33.0% of 103 movements23.1% of 121 movements22.8% of 127 movements19.4% of 134 movements37.2% of 148 movements22.1% of 145 movements31.6% of 133 movements22.1% of 131 movements19.8% of 106 movements22.9% of 109 movements202626.5% of 83 movements24.7% of 85 movements28.1% of 121 movements15.6% of 128 movements19.7% of 132 movements24.2% of 124 movementsno datano datano datano datano datano data
Month-by-month table: median, observed range and sample
MonthMedianObserved rangeSample
Jan22.9%12.3–30.0%7 months, 548 flights
Feb14.7%11.4–30.1%7 months, 593 flights
Mar33.0%17.8–37.1%7 months, 732 flights
Apr29.5%15.6–39.0%7 months, 943 flights
May24.4%19.4–42.9%7 months, 1,009 flights
Jun30.3%19.4–51.0%7 months, 1,006 flights
Jul37.2%26.8–40.5%6 months, 933 flights
Aug33.7%22.1–49.1%6 months, 929 flights
Sep35.9%20.6–45.7%6 months, 897 flights
Oct34.8%22.1–40.3%6 months, 856 flights
Nov17.6%10.3–33.3%6 months, 582 flights
Dec31.4%22.9–44.0%6 months, 611 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: BRS ↔ GIBRALTAR, 18.5% of 108 movements. Highest disruption: BHX ↔ GIBRALTAR, 42.0% of 100 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 optionBrs ↔ Gibraltar18.5% of 108 flightsLhr ↔ Gibraltar20.7% of 648 flightsLgw ↔ Gibraltar23.9% of 376 flightsMan ↔ Gibraltar33.5% of 212 flightsBhx ↔ Gibraltar42.0% of 100 flights
All route comparisons and sample flags
RouteDisruptionCancellationsSample flag
BRS ↔ GIBRALTAR18.5% of 108 movementsno events in 108 movementsdescriptive comparison
Heathrow ↔ Gibraltar20.7% of 648 movements1.4% of 648 movementsdescriptive comparison
LGW ↔ GIBRALTAR23.9% of 376 movements3.5% of 376 movementsdescriptive comparison
MAN ↔ GIBRALTAR33.5% of 212 movements2.8% of 212 movementsdescriptive comparison
BHX ↔ GIBRALTAR42.0% of 100 movements3.0% of 100 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?

5 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
Birmingham42.0% of 100 movementsdescriptive comparison
Bristol18.5% of 108 movementsdescriptive comparison
Gatwick23.9% of 376 movementsdescriptive comparison
Heathrow20.7% of 648 movementsdescriptive comparison
Manchester33.5% of 212 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

24.7% of 1,445 movements arrivals were disrupted, against 19.2% of 1,460 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

1.4% of 1,445 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

Gibraltar appears from Jan 2018 to Jun 2026 with 11,545 arrivals.

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

Archive route pairs: 20.

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?

24.7% of 1,445 movements over July 2025 to June 2026.

How often are they cancelled?

2.1% of 1,445 movements at short notice.

How late is late?

37.1–79.3 minutes; delayed denominator 326–659

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.