How often are these flights late or cancelled?
Air India
In the twelve months from July 2025 to June 2026, 54.1% of 2,975 movements arriving into the UK were disrupted — more than fifteen minutes late or cancelled at short notice.
Put the other way round, 45.9% of 2,975 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
54.1% of 2,975 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 |
|---|---|---|---|
| 54.1% of 2,975 movements | 1.3% of 2,975 movements | 44.9–63.4 minutes; delayed denominator 1,571–2,152 | 1.9% of 2,975 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?
1.9% of 2,975 movements passed the three-hour mark.
The ladder shows how many movements crossed each threshold. Cancellations are separate: 1.3% of 2,975 movements.
| Delay | Share and sample | One event per movements |
|---|---|---|
| More than 15 minutes | 52.8% of 2,975 movements | 1.9 |
| More than 30 minutes | 35.5% of 2,975 movements | 2.8 |
| More than 60 minutes | 15.6% of 2,975 movements | 6.4 |
| More than 120 minutes | 4.7% of 2,975 movements | 21.4 |
| More than 180 minutes | 1.9% of 2,975 movements | 52.2 |
| More than 360 minutes | 0.5% of 2,975 movements | 185.9 |
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?
4.7% of 2,975 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: Aug 2022, 5.3% of 151 movements. Worst month: Mar 2026, 97.2% of 288 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 | 36.8% of 155 movements |
| Feb 2018 | 14.3% of 140 movements |
| Mar 2018 | 23.9% of 155 movements |
| Apr 2018 | 22.0% of 150 movements |
| May 2018 | 18.2% of 159 movements |
| Jun 2018 | 20.9% of 153 movements |
| Jul 2018 | 14.8% of 155 movements |
| Aug 2018 | 18.2% of 154 movements |
| Sep 2018 | 13.4% of 149 movements |
| Oct 2018 | 14.9% of 154 movements |
| Nov 2018 | 17.2% of 145 movements |
| Dec 2018 | 25.7% of 152 movements |
| Jan 2019 | 41.7% of 151 movements |
| Feb 2019 | 35.3% of 136 movements |
| Mar 2019 | 85.3% of 143 movements |
| Apr 2019 | 47.1% of 138 movements |
| May 2019 | 36.0% of 139 movements |
| Jun 2019 | 39.3% of 135 movements |
| Jul 2019 | 35.0% of 140 movements |
| Aug 2019 | 25.5% of 145 movements |
| Sep 2019 | 37.7% of 146 movements |
| Oct 2019 | 40.8% of 152 movements |
| Nov 2019 | 40.1% of 157 movements |
| Dec 2019 | 54.0% of 163 movements |
| Jan 2020 | 60.5% of 162 movements |
| Feb 2020 | 65.3% of 167 movements |
| Mar 2020 | 39.7% of 126 movements |
| Apr 2020 | suppressed: fewer than twenty movements |
| May 2020 | suppressed: fewer than twenty movements |
| Jun 2020 | 22.9% of 35 movements — small sample, not ranked |
| Jul 2020 | 11.1% of 36 movements — small sample, not ranked |
| Aug 2020 | 17.8% of 45 movements — small sample, not ranked |
| Sep 2020 | 12.9% of 85 movements |
| Oct 2020 | 19.0% of 100 movements |
| Nov 2020 | 15.0% of 100 movements |
| Dec 2020 | 59.2% of 76 movements |
| Jan 2021 | 52.3% of 44 movements — small sample, not ranked |
| Feb 2021 | 50.0% of 52 movements |
| Mar 2021 | 48.4% of 64 movements |
| Apr 2021 | 16.7% of 48 movements — small sample, not ranked |
| May 2021 | 14.9% of 47 movements — small sample, not ranked |
| Jun 2021 | 7.8% of 51 movements |
| Jul 2021 | 13.0% of 54 movements |
| Aug 2021 | 10.3% of 78 movements |
| Sep 2021 | 19.3% of 119 movements |
| Oct 2021 | 39.1% of 128 movements |
| Nov 2021 | 67.2% of 131 movements |
| Dec 2021 | 82.8% of 128 movements |
| Jan 2022 | 68.5% of 124 movements |
| Feb 2022 | 60.9% of 115 movements |
| Mar 2022 | 27.5% of 131 movements |
| Apr 2022 | 32.9% of 146 movements |
| May 2022 | 26.3% of 152 movements |
| Jun 2022 | 26.9% of 145 movements |
| Jul 2022 | 14.6% of 151 movements |
| Aug 2022 | 5.3% of 151 movements |
| Sep 2022 | 22.0% of 150 movements |
| Oct 2022 | 27.3% of 172 movements |
| Nov 2022 | 18.4% of 201 movements |
| Dec 2022 | 32.7% of 196 movements |
| Jan 2023 | 30.4% of 217 movements |
| Feb 2023 | 33.8% of 198 movements |
| Mar 2023 | 22.0% of 218 movements |
| Apr 2023 | 17.5% of 211 movements |
| May 2023 | 12.6% of 215 movements |
| Jun 2023 | 21.3% of 211 movements |
| Jul 2023 | 35.0% of 217 movements |
| Aug 2023 | 23.0% of 217 movements |
| Sep 2023 | 29.6% of 213 movements |
| Oct 2023 | 56.9% of 218 movements |
| Nov 2023 | 45.1% of 215 movements |
| Dec 2023 | 68.9% of 222 movements |
| Jan 2024 | 67.1% of 216 movements |
| Feb 2024 | 61.8% of 204 movements |
| Mar 2024 | 30.1% of 219 movements |
| Apr 2024 | 59.6% of 208 movements |
| May 2024 | 48.0% of 223 movements |
| Jun 2024 | 47.4% of 211 movements |
| Jul 2024 | 53.7% of 216 movements |
| Aug 2024 | 81.2% of 229 movements |
| Sep 2024 | 52.6% of 230 movements |
| Oct 2024 | 59.2% of 245 movements |
| Nov 2024 | 55.7% of 253 movements |
| Dec 2024 | 34.5% of 284 movements |
| Jan 2025 | 31.3% of 284 movements |
| Feb 2025 | 23.8% of 256 movements |
| Mar 2025 | 28.8% of 285 movements |
| Apr 2025 | 48.4% of 275 movements |
| May 2025 | 65.1% of 284 movements |
| Jun 2025 | 66.9% of 260 movements |
| Jul 2025 | 25.1% of 231 movements |
| Aug 2025 | 32.6% of 218 movements |
| Sep 2025 | 55.8% of 215 movements |
| Oct 2025 | 72.0% of 236 movements |
| Nov 2025 | 41.0% of 261 movements |
| Dec 2025 | 48.5% of 270 movements |
| Jan 2026 | 75.6% of 271 movements |
| Feb 2026 | 64.1% of 245 movements |
| Mar 2026 | 97.2% of 288 movements |
| Apr 2026 | 70.5% of 244 movements |
| May 2026 | 37.3% of 252 movements |
| Jun 2026 | 18.0% of 244 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 | 22.9% of 35 movements — small sample, not ranked | no complete baseline | not enough data: needs a complete baseline and a publishable event month |
| Pandemic regime · Jun 2020 | Departures | 28.6% of 35 movements — small sample, not ranked | no complete baseline | not enough data: needs a complete baseline and a publishable event month |
| Summer 2022 breakdown · Jul 2022 | Arrivals | 14.6% of 151 movements | 39.5% across 1,451 flights | returned the next month |
| Summer 2022 breakdown · Jul 2022 | Departures | 58.3% of 151 movements | 45.8% across 1,445 flights | returned the next month |
| NATS system failure · Aug 2023 | Arrivals | 23.0% of 217 movements | 23.2% across 2,357 flights | still above it 8 months later |
| NATS system failure · Aug 2023 | Departures | 34.2% of 219 movements | 29.6% across 2,356 flights | returned after 7 months |
| Heathrow fire closure · Mar 2025 | Arrivals | 28.8% of 285 movements | 48.1% across 2,858 flights | returned after 4 months |
| Heathrow fire closure · Mar 2025 | Departures | 26.1% of 287 movements | 49.5% across 2,864 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: Oct, 48.8% across 6 months. Lowest median: Aug, 24.3% 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 | 41.7% | 30.4–75.6% | 7 months, 1,418 flights |
| Feb | 35.3% | 14.3–64.1% | 7 months, 1,294 flights |
| Mar | 28.8% | 22.0–97.2% | 7 months, 1,439 flights |
| Apr | 47.1% | 17.5–70.5% | 7 months, 1,372 flights |
| May | 36.0% | 12.6–65.1% | 7 months, 1,424 flights |
| Jun | 26.9% | 18.0–66.9% | 7 months, 1,359 flights |
| Jul | 30.1% | 14.6–53.7% | 6 months, 1,110 flights |
| Aug | 24.3% | 5.3–81.2% | 6 months, 1,114 flights |
| Sep | 33.6% | 13.4–55.8% | 6 months, 1,103 flights |
| Oct | 48.8% | 14.9–72.0% | 6 months, 1,177 flights |
| Nov | 40.6% | 17.2–55.7% | 6 months, 1,232 flights |
| Dec | 41.5% | 25.7–68.9% | 6 months, 1,287 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 ↔ AHMEDABAD, 31.8% of 129 movements. Highest disruption: LHR ↔ DELHI, 64.3% of 1,349 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 ↔ AHMEDABAD | 31.8% of 129 movements | no events in 129 movements | descriptive comparison |
| Heathrow ↔ Bangalore (Bengaluru) | 42.1% of 323 movements | 0.9% of 323 movements | descriptive comparison |
| LGW ↔ AMRITSAR | 43.0% of 107 movements | 2.8% of 107 movements | descriptive comparison |
| Heathrow ↔ Mumbai | 47.5% of 735 movements | 1.1% of 735 movements | descriptive comparison |
| BHX ↔ AMRITSAR | 49.0% of 149 movements | 4.7% of 149 movements | descriptive comparison |
| BHX ↔ DELHI | 59.6% of 141 movements | 0.7% of 141 movements | descriptive comparison |
| Heathrow ↔ Delhi | 64.3% of 1,349 movements | 1.2% of 1,349 movements | descriptive comparison |
| LHR ↔ AHMEDABAD | 24.3% of 37 movements — small sample, not ranked | no events in 37 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?
3 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 |
|---|---|---|
| Birmingham | 54.1% of 290 movements | descriptive comparison |
| Gatwick | 37.0% of 238 movements | descriptive comparison |
| Heathrow | 55.7% of 2,447 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
54.1% of 2,975 movements arrivals were disrupted, against 59.3% of 2,989 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
1.9% of 2,975 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
Air India appears from Jan 2018 to Jun 2026 with 17,235 arrivals.
The bounds describe the published record, not every commercial service. Final point is not necessarily a nonstop destination.
Archive route pairs: 47.
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?
54.1% of 2,975 movements over July 2025 to June 2026.
How often are they cancelled?
1.3% of 2,975 movements at short notice.
How late is late?
44.9–63.4 minutes; delayed denominator 1,571–2,152
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.