How often are these flights late or cancelled?
Canada
In the twelve months from July 2025 to June 2026, 28.6% of 7,206 movements arriving into the UK were disrupted — more than fifteen minutes late or cancelled at short notice.
Put the other way round, 71.4% of 7,206 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
28.6% of 7,206 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 |
|---|---|---|---|
| 28.6% of 7,206 movements | 1.9% of 7,206 movements | 32.5–63.3 minutes; delayed denominator 1,927–3,538 | 1.0% of 7,206 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?
1.0% of 7,206 movements passed the three-hour mark.
The ladder shows how many movements crossed each threshold. Cancellations are separate: 1.9% of 7,206 movements.
| Delay | Share and sample | One event per movements |
|---|---|---|
| More than 15 minutes | 26.7% of 7,206 movements | 3.7 |
| More than 30 minutes | 15.7% of 7,206 movements | 6.4 |
| More than 60 minutes | 7.0% of 7,206 movements | 14.3 |
| More than 120 minutes | 2.2% of 7,206 movements | 44.8 |
| More than 180 minutes | 1.0% of 7,206 movements | 102.9 |
| More than 360 minutes | 0.1% of 7,206 movements | 720.6 |
Definitions, denominators and limits
Arrivals into UK reporting airports only unless labelled departures. Denominator: operated movements plus short-notice cancellations (M+C). A movement is not a scheduled flight. Unmatched records are data quality, not outcomes. Cells below twenty movements are suppressed; twenty to forty-nine are descriptive and not ranked.
Slightly late or occasionally a disaster?
2.2% of 7,206 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: Sep 2020, 1.4% of 148 movements. Worst month: Dec 2022, 72.4% of 427 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 | 41.1% of 509 movements |
| Feb 2018 | 30.3% of 445 movements |
| Mar 2018 | 38.9% of 519 movements |
| Apr 2018 | 29.1% of 533 movements |
| May 2018 | 24.3% of 708 movements |
| Jun 2018 | 31.7% of 816 movements |
| Jul 2018 | 36.0% of 889 movements |
| Aug 2018 | 29.9% of 899 movements |
| Sep 2018 | 19.0% of 843 movements |
| Oct 2018 | 20.6% of 647 movements |
| Nov 2018 | 37.1% of 456 movements |
| Dec 2018 | 33.4% of 476 movements |
| Jan 2019 | 38.5% of 480 movements |
| Feb 2019 | 53.9% of 425 movements |
| Mar 2019 | 30.8% of 464 movements |
| Apr 2019 | 27.6% of 486 movements |
| May 2019 | 29.3% of 646 movements |
| Jun 2019 | 37.6% of 748 movements |
| Jul 2019 | 35.2% of 825 movements |
| Aug 2019 | 25.2% of 821 movements |
| Sep 2019 | 22.9% of 712 movements |
| Oct 2019 | 19.9% of 583 movements |
| Nov 2019 | 25.8% of 445 movements |
| Dec 2019 | 36.8% of 459 movements |
| Jan 2020 | 32.6% of 438 movements |
| Feb 2020 | 26.8% of 410 movements |
| Mar 2020 | 17.2% of 383 movements |
| Apr 2020 | 10.2% of 49 movements — small sample, not ranked |
| May 2020 | 2.3% of 44 movements — small sample, not ranked |
| Jun 2020 | no events in 47 movements — small sample, not ranked |
| Jul 2020 | 9.4% of 85 movements |
| Aug 2020 | 8.2% of 134 movements |
| Sep 2020 | 1.4% of 148 movements |
| Oct 2020 | 5.8% of 155 movements |
| Nov 2020 | 10.1% of 99 movements |
| Dec 2020 | 20.0% of 95 movements |
| Jan 2021 | 15.9% of 82 movements |
| Feb 2021 | 13.3% of 60 movements |
| Mar 2021 | 5.2% of 58 movements |
| Apr 2021 | 3.3% of 60 movements |
| May 2021 | 9.1% of 66 movements |
| Jun 2021 | 4.2% of 72 movements |
| Jul 2021 | 12.8% of 94 movements |
| Aug 2021 | 53.8% of 130 movements |
| Sep 2021 | 31.9% of 238 movements |
| Oct 2021 | 29.2% of 277 movements |
| Nov 2021 | 20.1% of 273 movements |
| Dec 2021 | 43.0% of 291 movements |
| Jan 2022 | 28.3% of 237 movements |
| Feb 2022 | 18.8% of 165 movements |
| Mar 2022 | 30.7% of 267 movements |
| Apr 2022 | 44.7% of 340 movements |
| May 2022 | 45.2% of 533 movements |
| Jun 2022 | 65.8% of 679 movements |
| Jul 2022 | 54.3% of 740 movements |
| Aug 2022 | 46.5% of 719 movements |
| Sep 2022 | 50.3% of 666 movements |
| Oct 2022 | 32.3% of 524 movements |
| Nov 2022 | 37.0% of 411 movements |
| Dec 2022 | 72.4% of 427 movements |
| Jan 2023 | 41.3% of 416 movements |
| Feb 2023 | 44.3% of 384 movements |
| Mar 2023 | 58.2% of 426 movements |
| Apr 2023 | 49.2% of 423 movements |
| May 2023 | 45.0% of 564 movements |
| Jun 2023 | 60.3% of 650 movements |
| Jul 2023 | 50.2% of 725 movements |
| Aug 2023 | 40.1% of 718 movements |
| Sep 2023 | 38.6% of 676 movements |
| Oct 2023 | 39.5% of 574 movements |
| Nov 2023 | 32.5% of 434 movements |
| Dec 2023 | 42.2% of 445 movements |
| Jan 2024 | 52.5% of 421 movements |
| Feb 2024 | 30.0% of 383 movements |
| Mar 2024 | 39.0% of 436 movements |
| Apr 2024 | 30.9% of 434 movements |
| May 2024 | 34.7% of 643 movements |
| Jun 2024 | 31.9% of 700 movements |
| Jul 2024 | 29.9% of 763 movements |
| Aug 2024 | 32.5% of 766 movements |
| Sep 2024 | 31.4% of 711 movements |
| Oct 2024 | 19.9% of 577 movements |
| Nov 2024 | 22.1% of 403 movements |
| Dec 2024 | 39.7% of 416 movements |
| Jan 2025 | 40.9% of 396 movements |
| Feb 2025 | 46.7% of 353 movements |
| Mar 2025 | 21.4% of 402 movements |
| Apr 2025 | 17.7% of 520 movements |
| May 2025 | 27.2% of 655 movements |
| Jun 2025 | 21.8% of 760 movements |
| Jul 2025 | 25.4% of 842 movements |
| Aug 2025 | 30.9% of 847 movements |
| Sep 2025 | 21.1% of 749 movements |
| Oct 2025 | 21.3% of 601 movements |
| Nov 2025 | 28.7% of 429 movements |
| Dec 2025 | 49.5% of 444 movements |
| Jan 2026 | 50.8% of 423 movements |
| Feb 2026 | 31.3% of 387 movements |
| Mar 2026 | 15.7% of 445 movements |
| Apr 2026 | 22.6% of 521 movements |
| May 2026 | 26.6% of 717 movements |
| Jun 2026 | 30.3% of 801 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 47 movements — small sample, not ranked | 24.4% across 5,917 flights | returned the next month |
| Pandemic regime · Jun 2020 | Departures | 8.5% of 47 movements — small sample, not ranked | 25.2% across 5,923 flights | returned the next month |
| Summer 2022 breakdown · Jul 2022 | Arrivals | 54.3% of 740 movements | 35.4% across 3,524 flights | returned after 3 months |
| Summer 2022 breakdown · Jul 2022 | Departures | 66.5% of 746 movements | 38.4% across 3,522 flights | returned after 3 months |
| NATS system failure · Aug 2023 | Arrivals | 40.1% of 718 movements | 48.9% across 6,335 flights | returned the next month |
| NATS system failure · Aug 2023 | Departures | 48.6% of 716 movements | 48.8% across 6,347 flights | returned the next month |
| Heathrow fire closure · Mar 2025 | Arrivals | 21.4% of 402 movements | 33.3% across 6,598 flights | returned the next month |
| Heathrow fire closure · Mar 2025 | Departures | 23.0% of 404 movements | 28.2% across 6,603 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: Jan, 41.1% across 7 months. Lowest median: Oct, 20.9% 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.
Month-by-month table: median, observed range and sample
| Month | Median | Observed range | Sample |
|---|---|---|---|
| Jan | 41.1% | 28.3–52.5% | 7 months, 2,882 flights |
| Feb | 31.3% | 18.8–53.9% | 7 months, 2,542 flights |
| Mar | 30.8% | 15.7–58.2% | 7 months, 2,959 flights |
| Apr | 29.1% | 17.7–49.2% | 7 months, 3,257 flights |
| May | 29.3% | 24.3–45.2% | 7 months, 4,466 flights |
| Jun | 31.9% | 21.8–65.8% | 7 months, 5,154 flights |
| Jul | 35.6% | 25.4–54.3% | 6 months, 4,784 flights |
| Aug | 31.7% | 25.2–46.5% | 6 months, 4,770 flights |
| Sep | 27.1% | 19.0–50.3% | 6 months, 4,357 flights |
| Oct | 20.9% | 19.9–39.5% | 6 months, 3,506 flights |
| Nov | 30.6% | 22.1–37.1% | 6 months, 2,578 flights |
| Dec | 41.0% | 33.4–72.4% | 6 months, 2,667 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: LGW ↔ ST-JOHNS, 18.1% of 105 movements. Highest disruption: LGW ↔ TORONTO, 45.2% of 447 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 |
|---|---|---|---|
| LGW ↔ ST-JOHNS | 18.1% of 105 movements | 1.0% of 105 movements | descriptive comparison |
| Heathrow ↔ Vancouver | 18.3% of 868 movements | 0.7% of 868 movements | descriptive comparison |
| LGW ↔ HALIFAX-INT | 19.2% of 78 movements | no events in 78 movements | descriptive comparison |
| LGW ↔ MONTREAL-DORVAL | 19.7% of 147 movements | no events in 147 movements | descriptive comparison |
| GLA ↔ TORONTO | 24.2% of 215 movements | no events in 215 movements | descriptive comparison |
| EDI ↔ TORONTO | 25.1% of 358 movements | 2.0% of 358 movements | descriptive comparison |
| LGW ↔ VANCOUVER | 25.9% of 139 movements | 1.4% of 139 movements | descriptive comparison |
| LHR ↔ HALIFAX-INT | 26.5% of 351 movements | 2.8% of 351 movements | descriptive comparison |
| Heathrow ↔ Calgary | 28.5% of 731 movements | 2.6% of 731 movements | descriptive comparison |
| Heathrow ↔ Toronto | 29.1% of 2,242 movements | 2.1% of 2,242 movements | descriptive comparison |
| Heathrow ↔ Montreal (Dorval) | 31.8% of 875 movements | 2.5% of 875 movements | descriptive comparison |
| EDI ↔ HALIFAX-INT | 34.6% of 78 movements | 3.8% of 78 movements | descriptive comparison |
| EDI ↔ CALGARY | 36.1% of 61 movements | 1.6% of 61 movements | descriptive comparison |
| MAN ↔ TORONTO | 36.1% of 249 movements | 2.0% of 249 movements | descriptive comparison |
| LHR ↔ OTTAWA-INTERNATIONAL | 39.3% of 178 movements | 3.4% of 178 movements | descriptive comparison |
| LGW ↔ TORONTO | 45.2% of 447 movements | 0.7% of 447 movements | descriptive comparison |
| CWL ↔ TORONTO | 8.7% of 23 movements — small sample, not ranked | no events in 23 movements — small sample, not ranked | small sample; not ranked |
| EDI ↔ MONTREAL-DORVAL | 33.3% of 42 movements — small sample, not ranked | 4.8% of 42 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?
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 airport | Disruption | Sample flag |
|---|---|---|
| Cardiff Wales | 8.7% of 23 movements — small sample, not ranked | small sample; not ranked |
| Edinburgh | 28.4% of 539 movements | descriptive comparison |
| Glasgow | 24.2% of 215 movements | descriptive comparison |
| Gatwick | 32.7% of 934 movements | descriptive comparison |
| Heathrow | 27.8% of 5,245 movements | descriptive comparison |
| Manchester | 36.1% of 249 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
28.6% of 7,206 movements arrivals were disrupted, against 27.1% of 7,217 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
1.0% of 7,206 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
Canada appears from Jan 2018 to Jun 2026 with 47,710 arrivals.
The bounds describe the published record, not every commercial service. Final point is not necessarily a nonstop destination.
Archive route pairs: 73.
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?
28.6% of 7,206 movements over July 2025 to June 2026.
How often are they cancelled?
1.9% of 7,206 movements at short notice.
How late is late?
32.5–63.3 minutes; delayed denominator 1,927–3,538
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.