How often are these flights late or cancelled?
Aer Lingus
In the twelve months from July 2025 to June 2026, 24.0% of 26,266 movements arriving into the UK were disrupted — more than fifteen minutes late or cancelled at short notice.
Put the other way round, 76.0% of 26,266 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
24.0% of 26,266 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.
| Disruption | Short-notice cancellations | Delay among delayed movements | Over three hours |
|---|---|---|---|
| 24.0% of 26,266 movements | 1.9% of 26,266 movements | 24.3–59.3 minutes; delayed denominator 5,793–13,079 | 0.5% of 26,266 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 26,266 movements passed the three-hour mark.
The ladder shows how many movements crossed each threshold. Cancellations are separate: 1.9% of 26,266 movements.
| Delay | Share and sample | One event per movements |
|---|---|---|
| More than 15 minutes | 22.1% of 26,266 movements | 4.5 |
| More than 30 minutes | 11.9% of 26,266 movements | 8.4 |
| More than 60 minutes | 5.2% of 26,266 movements | 19.3 |
| More than 120 minutes | 1.5% of 26,266 movements | 65.2 |
| More than 180 minutes | 0.5% of 26,266 movements | 186.3 |
| More than 360 minutes | 0.0% of 26,266 movements | 2,387.8 |
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?
1.5% of 26,266 movements passed two hours.
The histogram shows the published delay bands. Bucket shares use all reported operations, including unmatched records; cancellations are reported separately.
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 2020, no events in 189 movements. Worst month: Aug 2023, 40.3% of 2,055 movements.
The line traces every month. Lower disruption is better; gaps are never zeros. Pandemic readings describe a different operating regime.
Every monthly observation
| Month | Disruption on arrivals |
|---|---|
| Jan 2018 | 11.5% of 1,810 movements |
| Feb 2018 | 11.6% of 1,670 movements |
| Mar 2018 | 24.0% of 1,901 movements |
| Apr 2018 | 20.0% of 1,877 movements |
| May 2018 | 20.6% of 2,012 movements |
| Jun 2018 | 24.4% of 1,935 movements |
| Jul 2018 | 19.7% of 1,989 movements |
| Aug 2018 | 16.2% of 1,989 movements |
| Sep 2018 | 19.0% of 1,932 movements |
| Oct 2018 | 21.1% of 1,953 movements |
| Nov 2018 | 25.3% of 1,797 movements |
| Dec 2018 | 22.9% of 1,900 movements |
| Jan 2019 | 6.1% of 1,998 movements |
| Feb 2019 | 14.7% of 1,865 movements |
| Mar 2019 | 18.8% of 2,115 movements |
| Apr 2019 | 25.1% of 2,122 movements |
| May 2019 | 18.2% of 2,001 movements |
| Jun 2019 | 30.0% of 1,924 movements |
| Jul 2019 | 21.4% of 1,988 movements |
| Aug 2019 | 24.7% of 1,988 movements |
| Sep 2019 | 26.9% of 1,894 movements |
| Oct 2019 | 16.8% of 1,900 movements |
| Nov 2019 | 10.4% of 1,757 movements |
| Dec 2019 | 11.8% of 1,787 movements |
| Jan 2020 | 7.6% of 1,825 movements |
| Feb 2020 | 20.4% of 1,781 movements |
| Mar 2020 | 7.9% of 1,579 movements |
| Apr 2020 | 4.3% of 188 movements |
| May 2020 | no events in 189 movements |
| Jun 2020 | no events in 230 movements |
| Jul 2020 | 1.8% of 326 movements |
| Aug 2020 | 1.9% of 363 movements |
| Sep 2020 | 3.7% of 540 movements |
| Oct 2020 | 2.4% of 800 movements |
| Nov 2020 | 4.3% of 492 movements |
| Dec 2020 | 7.2% of 724 movements |
| Jan 2021 | 5.7% of 506 movements |
| Feb 2021 | 4.8% of 289 movements |
| Mar 2021 | 5.9% of 290 movements |
| Apr 2021 | 2.4% of 340 movements |
| May 2021 | 3.9% of 434 movements |
| Jun 2021 | 16.6% of 465 movements |
| Jul 2021 | 2.4% of 635 movements |
| Aug 2021 | 1.7% of 720 movements |
| Sep 2021 | 1.9% of 720 movements |
| Oct 2021 | 1.0% of 785 movements |
| Nov 2021 | 3.2% of 872 movements |
| Dec 2021 | 6.2% of 1,022 movements |
| Jan 2022 | 6.5% of 788 movements |
| Feb 2022 | 7.9% of 832 movements |
| Mar 2022 | 8.6% of 1,160 movements |
| Apr 2022 | 21.8% of 1,483 movements |
| May 2022 | 26.5% of 1,752 movements |
| Jun 2022 | 40.0% of 1,992 movements |
| Jul 2022 | 36.1% of 2,090 movements |
| Aug 2022 | 30.6% of 2,209 movements |
| Sep 2022 | 33.7% of 2,208 movements |
| Oct 2022 | 25.9% of 2,285 movements |
| Nov 2022 | 23.9% of 2,272 movements |
| Dec 2022 | 37.9% of 2,143 movements |
| Jan 2023 | 12.4% of 1,994 movements |
| Feb 2023 | 12.8% of 1,857 movements |
| Mar 2023 | 23.0% of 2,105 movements |
| Apr 2023 | 26.2% of 2,007 movements |
| May 2023 | 35.1% of 2,222 movements |
| Jun 2023 | 36.4% of 1,821 movements |
| Jul 2023 | 35.4% of 2,088 movements |
| Aug 2023 | 40.3% of 2,055 movements |
| Sep 2023 | 35.5% of 1,938 movements |
| Oct 2023 | 25.9% of 1,984 movements |
| Nov 2023 | 17.4% of 1,952 movements |
| Dec 2023 | 31.1% of 1,924 movements |
| Jan 2024 | 21.0% of 1,854 movements |
| Feb 2024 | 17.5% of 1,800 movements |
| Mar 2024 | 21.4% of 2,017 movements |
| Apr 2024 | 23.6% of 1,976 movements |
| May 2024 | 30.3% of 1,996 movements |
| Jun 2024 | 26.0% of 2,218 movements |
| Jul 2024 | 24.8% of 2,283 movements |
| Aug 2024 | 21.8% of 2,338 movements |
| Sep 2024 | 36.0% of 2,275 movements |
| Oct 2024 | 22.7% of 2,307 movements |
| Nov 2024 | 18.8% of 2,110 movements |
| Dec 2024 | 35.7% of 2,235 movements |
| Jan 2025 | 24.4% of 2,135 movements |
| Feb 2025 | 15.8% of 1,972 movements |
| Mar 2025 | 14.4% of 2,140 movements |
| Apr 2025 | 16.6% of 2,222 movements |
| May 2025 | 16.7% of 2,297 movements |
| Jun 2025 | 27.7% of 2,310 movements |
| Jul 2025 | 29.7% of 2,330 movements |
| Aug 2025 | 27.1% of 2,194 movements |
| Sep 2025 | 31.5% of 2,124 movements |
| Oct 2025 | 24.6% of 2,131 movements |
| Nov 2025 | 21.8% of 2,103 movements |
| Dec 2025 | 34.0% of 2,138 movements |
| Jan 2026 | 21.7% of 2,088 movements |
| Feb 2026 | 16.4% of 1,904 movements |
| Mar 2026 | 21.0% of 2,168 movements |
| Apr 2026 | 14.1% of 2,294 movements |
| May 2026 | 18.4% of 2,389 movements |
| Jun 2026 | 27.0% of 2,403 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.
| Event | Direction | Disruption that month | Baseline before | Return to baseline |
|---|---|---|---|---|
| Pandemic regime · Jun 2020 | Arrivals | no events in 230 movements | 15.2% across 18,800 flights | returned the next month |
| Pandemic regime · Jun 2020 | Departures | 3.5% of 230 movements | 17.9% across 18,789 flights | returned the next month |
| Summer 2022 breakdown · Jul 2022 | Arrivals | 36.1% of 2,090 movements | 10.6% across 12,761 flights | still above it 8 months later |
| Summer 2022 breakdown · Jul 2022 | Departures | 46.3% of 2,085 movements | 13.4% across 12,762 flights | still above it 8 months later |
| NATS system failure · Aug 2023 | Arrivals | 40.3% of 2,055 movements | 27.8% across 25,211 flights | returned after 2 months |
| NATS system failure · Aug 2023 | Departures | 49.9% of 2,050 movements | 33.1% across 25,193 flights | returned after 2 months |
| Heathrow fire closure · Mar 2025 | Arrivals | 14.4% of 2,140 movements | 25.1% across 25,862 flights | returned the next month |
| Heathrow fire closure · Mar 2025 | Departures | 18.3% of 2,135 movements | 30.1% across 25,809 flights | returned 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, 32.6% across 6 months. Lowest median: Jan, 12.4% 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.
Month-by-month table: median, observed range and sample
| Month | Median | Observed range | Sample |
|---|---|---|---|
| Jan | 12.4% | 6.1–24.4% | 7 months, 12,667 flights |
| Feb | 14.7% | 7.9–17.5% | 7 months, 11,900 flights |
| Mar | 21.0% | 8.6–24.0% | 7 months, 13,606 flights |
| Apr | 21.8% | 14.1–26.2% | 7 months, 13,981 flights |
| May | 20.6% | 16.7–35.1% | 7 months, 14,669 flights |
| Jun | 27.7% | 24.4–40.0% | 7 months, 14,603 flights |
| Jul | 27.3% | 19.7–36.1% | 6 months, 12,768 flights |
| Aug | 25.9% | 16.2–40.3% | 6 months, 12,773 flights |
| Sep | 32.6% | 19.0–36.0% | 6 months, 12,371 flights |
| Oct | 23.7% | 16.8–25.9% | 6 months, 12,560 flights |
| Nov | 20.3% | 10.4–25.3% | 6 months, 11,991 flights |
| Dec | 32.5% | 11.8–37.9% | 6 months, 12,127 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 ↔ CORK, 13.4% of 1,455 movements. Highest disruption: GLA ↔ BELFAST-CITY-GEORGE-BEST, 30.5% of 370 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.
All route comparisons and sample flags
| Route | Disruption | Cancellations | Sample flag |
|---|---|---|---|
| Heathrow ↔ Cork | 13.4% of 1,455 movements | 0.7% of 1,455 movements | descriptive comparison |
| EMA ↔ BELFAST-CITY-GEORGE-BEST | 17.7% of 294 movements | 1.0% of 294 movements | descriptive comparison |
| Southampton ↔ Belfast City (George Best) | 20.3% of 798 movements | 2.3% of 798 movements | descriptive comparison |
| GLA ↔ CORK | 20.4% of 211 movements | 1.9% of 211 movements | descriptive comparison |
| Newcastle ↔ Dublin | 22.4% of 428 movements | 0.5% of 428 movements | descriptive comparison |
| Birmingham ↔ Belfast City (George Best) | 22.7% of 2,004 movements | 3.7% of 2,004 movements | descriptive comparison |
| Southampton ↔ Dublin | 22.9% of 892 movements | 2.2% of 892 movements | descriptive comparison |
| Glasgow ↔ Dublin | 23.0% of 1,673 movements | 1.4% of 1,673 movements | descriptive comparison |
| Manchester ↔ Belfast City (George Best) | 23.3% of 1,335 movements | 2.4% of 1,335 movements | descriptive comparison |
| Liverpool (John Lennon) ↔ Dublin | 23.6% of 649 movements | 2.3% of 649 movements | descriptive comparison |
| Heathrow ↔ Dublin | 23.6% of 3,998 movements | 0.6% of 3,998 movements | descriptive comparison |
| Leeds Bradford ↔ Belfast City (George Best) | 23.7% of 1,166 movements | 3.7% of 1,166 movements | descriptive comparison |
| Heathrow ↔ Shannon | 23.9% of 1,039 movements | 0.9% of 1,039 movements | descriptive comparison |
| Birmingham ↔ Dublin | 24.7% of 2,012 movements | 2.5% of 2,012 movements | descriptive comparison |
| Leeds Bradford ↔ Dublin | 26.1% of 843 movements | 4.7% of 843 movements | descriptive comparison |
| LHR ↔ IRELAND-WEST-KNOCK | 26.1% of 352 movements | 1.4% of 352 movements | descriptive comparison |
| Aberdeen ↔ Dublin | 26.8% of 365 movements | 3.0% of 365 movements | descriptive comparison |
| Manchester ↔ Dublin | 26.9% of 2,539 movements | 1.6% of 2,539 movements | descriptive comparison |
| Edinburgh ↔ Belfast City (George Best) | 27.2% of 1,039 movements | 3.1% of 1,039 movements | descriptive comparison |
| Edinburgh ↔ Dublin | 27.5% of 2,468 movements | 1.6% of 2,468 movements | descriptive comparison |
| EXT ↔ DUBLIN | 28.5% of 172 movements | 1.2% of 172 movements | descriptive comparison |
| Glasgow ↔ Belfast City (George Best) | 30.5% of 370 movements | 2.4% of 370 movements | descriptive comparison |
| CWL ↔ BELFAST-CITY-GEORGE-BEST | 34.7% of 49 movements — small sample, not ranked | no events in 49 movements — small sample, not ranked | small sample; not ranked |
| Manchester ↔ New York (Jf Kennedy) | 72.4% of 29 movements — small sample, not ranked | no events in 29 movements — small sample, not ranked | small sample; not ranked |
| Manchester ↔ Orlando | 22.6% of 31 movements — small sample, not ranked | no events in 31 movements — small sample, not ranked | small 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?
13 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 airport | Disruption | Sample flag |
|---|---|---|
| Aberdeen | 26.8% of 365 movements | descriptive comparison |
| Birmingham | 23.7% of 4,017 movements | descriptive comparison |
| Cardiff Wales | 36.5% of 63 movements | descriptive comparison |
| Edinburgh | 27.4% of 3,507 movements | descriptive comparison |
| East Midlands International | 17.7% of 294 movements | descriptive comparison |
| Exeter | 26.3% of 190 movements | descriptive comparison |
| Glasgow | 24.0% of 2,254 movements | descriptive comparison |
| Leeds Bradford | 24.7% of 2,009 movements | descriptive comparison |
| Heathrow | 21.6% of 6,844 movements | descriptive comparison |
| Liverpool (John Lennon) | 23.6% of 649 movements | descriptive comparison |
| Manchester | 26.0% of 3,938 movements | descriptive comparison |
| Newcastle | 22.4% of 428 movements | descriptive comparison |
| Southampton | 21.7% of 1,690 movements | descriptive 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
24.0% of 26,266 movements arrivals were disrupted, against 29.3% of 26,277 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 26,266 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
Aer Lingus appears from Jan 2018 to Jun 2026 with 172,131 arrivals.
The bounds describe the published record, not every commercial service. Final point is not necessarily a nonstop destination.
Archive route pairs: 155.
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?
24.0% of 26,266 movements over July 2025 to June 2026.
How often are they cancelled?
1.9% of 26,266 movements at short notice.
How late is late?
24.3–59.3 minutes; delayed denominator 5,793–13,079
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 complainDefinitions, 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.