UK FLIGHT DELAY INDEX

derived from CAA punctuality statistics for UK reporting airports

How often are these flights late or cancelled?

Israel

In the twelve months from July 2025 to June 2026, 33.4% of 1,763 movements arriving into the UK were disrupted — more than fifteen minutes late or cancelled at short notice.

Put the other way round, 66.6% of 1,763 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

33.4% of 1,763 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
33.4% of 1,763 movements3.5% of 1,763 movements26.5–52.9 minutes; delayed denominator 527–9860.6% of 1,763 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?

0.6% of 1,763 movements passed the three-hour mark.

The ladder shows how many movements crossed each threshold. Cancellations are separate: 3.5% of 1,763 movements.

DelayShare and sampleOne event per movements
More than 15 minutes29.9% of 1,763 movements3.3
More than 30 minutes15.4% of 1,763 movements6.5
More than 60 minutes5.7% of 1,763 movements17.6
More than 120 minutes1.5% of 1,763 movements65.3
More than 180 minutes0.6% of 1,763 movements160.3
More than 360 minutesno events in 1,763 movementsNo observed events; this is not zero risk.
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 1,763 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 early24614.0%15–1 early47026.7%0–15 late45926.0%16–3025614.5%31–601719.7%61…120734.1%121…180160.9%181…360110.6%>36000.0%D=1,763
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: Apr 2021, 6.7% of 60 movements. Worst month: Mar 2026, 67.1% of 79 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: 41.5%; sample: 2242018Feb 2018: 25.1%; sample: 203Mar 2018: 40.1%; sample: 247Apr 2018: 41.6%; sample: 281May 2018: 40.5%; sample: 274Jun 2018: 39.9%; sample: 268Jul 2018: 43.3%; sample: 314Aug 2018: 36.2%; sample: 320Sep 2018: 41.0%; sample: 251Oct 2018: 33.3%; sample: 294Nov 2018: 21.2%; sample: 260Dec 2018: 40.2%; sample: 264Jan 2019: 24.2%; sample: 2522019Feb 2019: 21.3%; sample: 230Mar 2019: 35.2%; sample: 261Apr 2019: 34.9%; sample: 284May 2019: 25.3%; sample: 288Jun 2019: 39.9%; sample: 283Jul 2019: 47.8%; sample: 318Aug 2019: 48.6%; sample: 311Sep 2019: 33.7%; sample: 285Oct 2019: 33.9%; sample: 292Nov 2019: 23.7%; sample: 274Dec 2019: 42.6%; sample: 296Jan 2020: 28.9%; sample: 2802020Feb 2020: 52.7%; sample: 264Mar 2020: 29.9%; sample: 174Apr 2020: suppressed: fewer than twenty movements×May 2020: suppressed: fewer than twenty movements×Jun 2020: 42.3%; sample: 26Jul 2020: 25.0%; sample: 36Aug 2020: 29.6%; sample: 27Sep 2020: 19.6%; sample: 56Oct 2020: 15.7%; sample: 83Nov 2020: 12.1%; sample: 33Dec 2020: 29.6%; sample: 54Jan 2021: 26.1%; sample: 232021Feb 2021: suppressed: fewer than twenty movements×Mar 2021: 29.5%; sample: 44Apr 2021: 6.7%; sample: 60May 2021: 36.5%; sample: 85Jun 2021: 11.6%; sample: 95Jul 2021: 15.4%; sample: 130Aug 2021: 13.7%; sample: 95Sep 2021: 17.3%; sample: 110Oct 2021: 17.2%; sample: 134Nov 2021: 16.8%; sample: 143Dec 2021: 24.8%; sample: 133Jan 2022: 27.3%; sample: 662022Feb 2022: 34.5%; sample: 113Mar 2022: 36.9%; sample: 187Apr 2022: 55.7%; sample: 262May 2022: 49.2%; sample: 262Jun 2022: 56.3%; sample: 254Jul 2022: 51.8%; sample: 276Aug 2022: 45.4%; sample: 284Sep 2022: 50.0%; sample: 276Oct 2022: 43.1%; sample: 269Nov 2022: 30.5%; sample: 262Dec 2022: 53.4%; sample: 309Jan 2023: 29.3%; sample: 2902023Feb 2023: 32.8%; sample: 271Mar 2023: 47.9%; sample: 315Apr 2023: 35.2%; sample: 315May 2023: 30.1%; sample: 345Jun 2023: 46.3%; sample: 328Jul 2023: 45.4%; sample: 315Aug 2023: 36.1%; sample: 327Sep 2023: 37.1%; sample: 294Oct 2023: 63.3%; sample: 229Nov 2023: 51.8%; sample: 85Dec 2023: 30.1%; sample: 83Jan 2024: 28.6%; sample: 772024Feb 2024: 25.0%; sample: 80Mar 2024: 10.2%; sample: 88Apr 2024: 38.3%; sample: 149May 2024: 31.6%; sample: 158Jun 2024: 38.4%; sample: 146Jul 2024: 44.8%; sample: 172Aug 2024: 39.0%; sample: 164Sep 2024: 50.6%; sample: 170Oct 2024: 52.5%; sample: 120Nov 2024: 39.6%; sample: 106Dec 2024: 39.9%; sample: 143Jan 2025: 34.9%; sample: 1462025Feb 2025: 32.0%; sample: 128Mar 2025: 23.9%; sample: 142Apr 2025: 25.1%; sample: 199May 2025: 37.3%; sample: 169Jun 2025: 45.0%; sample: 111Jul 2025: 19.4%; sample: 129Aug 2025: 30.5%; sample: 154Sep 2025: 43.3%; sample: 157Oct 2025: 42.3%; sample: 156Nov 2025: 22.5%; sample: 182Dec 2025: 35.0%; sample: 206Jan 2026: 35.6%; sample: 1772026Feb 2026: 21.5%; sample: 158Mar 2026: 67.1%; sample: 79Apr 2026: 25.6%; sample: 78May 2026: 28.1%; sample: 128Jun 2026: 39.6%; sample: 159Pandemic regime Jun 2020Summer 2022 breakdown Jul 2022NATS system failure Aug 2023Heathrow fire closure Mar 2025100%0%
Every monthly observation
MonthDisruption on arrivals
Jan 201841.5% of 224 movements
Feb 201825.1% of 203 movements
Mar 201840.1% of 247 movements
Apr 201841.6% of 281 movements
May 201840.5% of 274 movements
Jun 201839.9% of 268 movements
Jul 201843.3% of 314 movements
Aug 201836.2% of 320 movements
Sep 201841.0% of 251 movements
Oct 201833.3% of 294 movements
Nov 201821.2% of 260 movements
Dec 201840.2% of 264 movements
Jan 201924.2% of 252 movements
Feb 201921.3% of 230 movements
Mar 201935.2% of 261 movements
Apr 201934.9% of 284 movements
May 201925.3% of 288 movements
Jun 201939.9% of 283 movements
Jul 201947.8% of 318 movements
Aug 201948.6% of 311 movements
Sep 201933.7% of 285 movements
Oct 201933.9% of 292 movements
Nov 201923.7% of 274 movements
Dec 201942.6% of 296 movements
Jan 202028.9% of 280 movements
Feb 202052.7% of 264 movements
Mar 202029.9% of 174 movements
Apr 2020suppressed: fewer than twenty movements
May 2020suppressed: fewer than twenty movements
Jun 202042.3% of 26 movements — small sample, not ranked
Jul 202025.0% of 36 movements — small sample, not ranked
Aug 202029.6% of 27 movements — small sample, not ranked
Sep 202019.6% of 56 movements
Oct 202015.7% of 83 movements
Nov 202012.1% of 33 movements — small sample, not ranked
Dec 202029.6% of 54 movements
Jan 202126.1% of 23 movements — small sample, not ranked
Feb 2021suppressed: fewer than twenty movements
Mar 202129.5% of 44 movements — small sample, not ranked
Apr 20216.7% of 60 movements
May 202136.5% of 85 movements
Jun 202111.6% of 95 movements
Jul 202115.4% of 130 movements
Aug 202113.7% of 95 movements
Sep 202117.3% of 110 movements
Oct 202117.2% of 134 movements
Nov 202116.8% of 143 movements
Dec 202124.8% of 133 movements
Jan 202227.3% of 66 movements
Feb 202234.5% of 113 movements
Mar 202236.9% of 187 movements
Apr 202255.7% of 262 movements
May 202249.2% of 262 movements
Jun 202256.3% of 254 movements
Jul 202251.8% of 276 movements
Aug 202245.4% of 284 movements
Sep 202250.0% of 276 movements
Oct 202243.1% of 269 movements
Nov 202230.5% of 262 movements
Dec 202253.4% of 309 movements
Jan 202329.3% of 290 movements
Feb 202332.8% of 271 movements
Mar 202347.9% of 315 movements
Apr 202335.2% of 315 movements
May 202330.1% of 345 movements
Jun 202346.3% of 328 movements
Jul 202345.4% of 315 movements
Aug 202336.1% of 327 movements
Sep 202337.1% of 294 movements
Oct 202363.3% of 229 movements
Nov 202351.8% of 85 movements
Dec 202330.1% of 83 movements
Jan 202428.6% of 77 movements
Feb 202425.0% of 80 movements
Mar 202410.2% of 88 movements
Apr 202438.3% of 149 movements
May 202431.6% of 158 movements
Jun 202438.4% of 146 movements
Jul 202444.8% of 172 movements
Aug 202439.0% of 164 movements
Sep 202450.6% of 170 movements
Oct 202452.5% of 120 movements
Nov 202439.6% of 106 movements
Dec 202439.9% of 143 movements
Jan 202534.9% of 146 movements
Feb 202532.0% of 128 movements
Mar 202523.9% of 142 movements
Apr 202525.1% of 199 movements
May 202537.3% of 169 movements
Jun 202545.0% of 111 movements
Jul 202519.4% of 129 movements
Aug 202530.5% of 154 movements
Sep 202543.3% of 157 movements
Oct 202542.3% of 156 movements
Nov 202522.5% of 182 movements
Dec 202535.0% of 206 movements
Jan 202635.6% of 177 movements
Feb 202621.5% of 158 movements
Mar 202667.1% of 79 movements
Apr 202625.6% of 78 movements
May 202628.1% of 128 movements
Jun 202639.6% of 159 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 2020Arrivals42.3% of 26 movements — small sample, not rankedno complete baselinenot enough data: needs a complete baseline and a publishable event month
Pandemic regime · Jun 2020Departures11.5% of 26 movements — small sample, not rankedno complete baselinenot enough data: needs a complete baseline and a publishable event month
Summer 2022 breakdown · Jul 2022Arrivals51.8% of 276 movements30.4% across 1,889 flightsreturned after 6 months
Summer 2022 breakdown · Jul 2022Departures71.9% of 274 movements33.1% across 1,875 flightsreturned after 6 months
NATS system failure · Aug 2023Arrivals36.1% of 327 movements40.8% across 3,579 flightsreturned the next month
NATS system failure · Aug 2023Departures58.0% of 326 movements49.3% across 3,561 flightsreturned after 6 months
Heathrow fire closure · Mar 2025Arrivals23.9% of 142 movements37.7% across 1,690 flightsreturned the next month
Heathrow fire closure · Mar 2025Departures30.6% of 144 movements53.5% across 1,692 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, 45.1% across 6 months. Lowest median: Feb, 25.1% 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 nJanFebMarAprMayJunJulAugSepOctNovDec201924.2% of 252 movements21.3% of 230 movements35.2% of 261 movements34.9% of 284 movements25.3% of 288 movements39.9% of 283 movements47.8% of 318 movements48.6% of 311 movements33.7% of 285 movements33.9% of 292 movements23.7% of 274 movements42.6% of 296 movements202028.9% of 280 movements52.7% of 264 movements29.9% of 174 movementssuppressed: fewer than twenty movementssuppressed: fewer than twenty movements42.3% of 26 movements †25.0% of 36 movements †29.6% of 27 movements †19.6% of 56 movements15.7% of 83 movements12.1% of 33 movements †29.6% of 54 movements202126.1% of 23 movements †suppressed: fewer than twenty movements29.5% of 44 movements †6.7% of 60 movements36.5% of 85 movements11.6% of 95 movements15.4% of 130 movements13.7% of 95 movements17.3% of 110 movements17.2% of 134 movements16.8% of 143 movements24.8% of 133 movements202227.3% of 66 movements34.5% of 113 movements36.9% of 187 movements55.7% of 262 movements49.2% of 262 movements56.3% of 254 movements51.8% of 276 movements45.4% of 284 movements50.0% of 276 movements43.1% of 269 movements30.5% of 262 movements53.4% of 309 movements202329.3% of 290 movements32.8% of 271 movements47.9% of 315 movements35.2% of 315 movements30.1% of 345 movements46.3% of 328 movements45.4% of 315 movements36.1% of 327 movements37.1% of 294 movements63.3% of 229 movements51.8% of 85 movements30.1% of 83 movements202428.6% of 77 movements25.0% of 80 movements10.2% of 88 movements38.3% of 149 movements31.6% of 158 movements38.4% of 146 movements44.8% of 172 movements39.0% of 164 movements50.6% of 170 movements52.5% of 120 movements39.6% of 106 movements39.9% of 143 movements202534.9% of 146 movements32.0% of 128 movements23.9% of 142 movements25.1% of 199 movements37.3% of 169 movements45.0% of 111 movements19.4% of 129 movements30.5% of 154 movements43.3% of 157 movements42.3% of 156 movements22.5% of 182 movements35.0% of 206 movements202635.6% of 177 movements21.5% of 158 movements67.1% of 79 movements25.6% of 78 movements28.1% of 128 movements39.6% of 159 movementsno datano datano datano datano datano data
Month-by-month table: median, observed range and sample
MonthMedianObserved rangeSample
Jan29.3%24.2–41.5%7 months, 1,232 flights
Feb25.1%21.3–34.5%7 months, 1,183 flights
Mar36.9%10.2–67.1%7 months, 1,319 flights
Apr35.2%25.1–55.7%7 months, 1,568 flights
May31.6%25.3–49.2%7 months, 1,624 flights
Jun39.9%38.4–56.3%7 months, 1,549 flights
Jul45.1%19.4–51.8%6 months, 1,524 flights
Aug37.6%30.5–48.6%6 months, 1,560 flights
Sep42.2%33.7–50.6%6 months, 1,433 flights
Oct42.7%33.3–63.3%6 months, 1,360 flights
Nov27.1%21.2–51.8%6 months, 1,169 flights
Dec40.0%30.1–53.4%6 months, 1,301 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 ↔ TEL-AVIV, 19.7% of 755 movements. Highest disruption: STN ↔ TEL-AVIV, 49.2% of 179 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 ↔ Tel-Aviv19.7% of 755 flightsLtn ↔ Tel-Aviv42.0% of 789 flightsStn ↔ Tel-Aviv49.2% of 179 flights
All route comparisons and sample flags
RouteDisruptionCancellationsSample flag
Heathrow ↔ Tel Aviv19.7% of 755 movements4.1% of 755 movementsdescriptive comparison
Luton ↔ Tel Aviv42.0% of 789 movements1.9% of 789 movementsdescriptive comparison
STN ↔ TEL-AVIV49.2% of 179 movements4.5% of 179 movementsdescriptive comparison
LGW ↔ TEL-AVIV48.6% of 37 movements — small sample, not ranked18.9% of 37 movements — small sample, not rankedsmall 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?

4 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
Gatwick48.6% of 37 movements — small sample, not rankedsmall sample; not ranked
Heathrow19.7% of 755 movementsdescriptive comparison
Luton42.0% of 789 movementsdescriptive comparison
Stansted49.2% of 179 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

33.4% of 1,763 movements arrivals were disrupted, against 50.2% of 1,773 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

0.6% of 1,763 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

Israel appears from Jan 2018 to Jun 2026 with 18,940 arrivals.

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

Archive route pairs: 17.

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?

33.4% of 1,763 movements over July 2025 to June 2026.

How often are they cancelled?

3.5% of 1,763 movements at short notice.

How late is late?

26.5–52.9 minutes; delayed denominator 527–986

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.