UK FLIGHT DELAY INDEX

derived from CAA punctuality statistics for UK reporting airports

What changed this month

Source: CAA punctuality statistics · snapshot 17/08/2026 10:24 · method route-record-v2.1.

Largest increases — routes

Changes compare Jun 2026 with Jun 2025.

Each row has at least one hundred arrivals in both months. All eligible published source populations; actual mix may change between years.

RecordJun 2025Jun 2026Change
Newcastle ↔ Palma De Mallorca30.4% of 125 arrivals60.2% of 123 arrivals+29.8 percentage points
Manchester ↔ Ibiza33.3% of 141 arrivals59.7% of 144 arrivals+26.4 percentage points
Heathrow ↔ Dallas/Fort Worth21.2% of 146 arrivals45.8% of 155 arrivals+24.6 percentage points
Manchester ↔ Heathrow22.7% of 176 arrivals44.2% of 181 arrivals+21.5 percentage points
Luton ↔ Tirana24.8% of 109 arrivals44.5% of 128 arrivals+19.8 percentage points
Heathrow ↔ Dusseldorf13.5% of 200 arrivals32.9% of 228 arrivals+19.4 percentage points
Heathrow ↔ Newcastle12.2% of 139 arrivals31.2% of 125 arrivals+19.0 percentage points
London City ↔ Dublin10.7% of 121 arrivals29.1% of 117 arrivals+18.3 percentage points
Heathrow ↔ Belfast City (George Best)14.5% of 193 arrivals32.8% of 174 arrivals+18.3 percentage points
Gatwick ↔ Heraklion45.3% of 161 arrivals63.4% of 161 arrivals+18.0 percentage points
Definitions and comparison limits

Disruption is more than fifteen minutes late plus short-notice cancellations, divided by operated movements plus short-notice cancellations. Only exact reconstructed monthly deltas are ordered. No cause or system-wide improvement is inferred.

Largest decreases — routes

Changes compare Jun 2026 with Jun 2025.

Each row has at least one hundred arrivals in both months. All eligible published source populations; actual mix may change between years.

RecordJun 2025Jun 2026Change
Heathrow ↔ Dubai47.8% of 270 arrivals10.7% of 150 arrivals-37.1 percentage points
Heathrow ↔ Delhi45.2% of 221 arrivals16.5% of 254 arrivals-28.7 percentage points
Heathrow ↔ Singapore43.7% of 151 arrivals20.5% of 151 arrivals-23.2 percentage points
Birmingham ↔ Malaga46.8% of 109 arrivals29.3% of 123 arrivals-17.5 percentage points
Heathrow ↔ Atlanta30.5% of 151 arrivals15.1% of 152 arrivals-15.3 percentage points
Belfast City (George Best) ↔ Birmingham46.1% of 165 arrivals32.7% of 171 arrivals-13.3 percentage points
Birmingham ↔ Belfast City (George Best)34.1% of 167 arrivals20.9% of 172 arrivals-13.2 percentage points
Heathrow ↔ Washington (Dulles)38.9% of 180 arrivals26.4% of 182 arrivals-12.5 percentage points
Bristol ↔ Amsterdam36.0% of 175 arrivals24.3% of 181 arrivals-11.7 percentage points
Manchester ↔ Faro36.6% of 153 arrivals25.6% of 156 arrivals-11.0 percentage points
Definitions and comparison limits

Disruption is more than fifteen minutes late plus short-notice cancellations, divided by operated movements plus short-notice cancellations. Only exact reconstructed monthly deltas are ordered. No cause or system-wide improvement is inferred.

Largest increases — airlines

Changes compare Jun 2026 with Jun 2025.

Each row has at least one hundred arrivals in both months. All eligible published source populations; actual mix may change between years.

RecordJun 2025Jun 2026Change
Etihad Airways28.0% of 164 arrivals49.5% of 188 arrivals+21.4 percentage points
Austrian Airlines12.9% of 178 arrivals33.6% of 134 arrivals+20.7 percentage points
Aegean Airlines19.9% of 146 arrivals40.4% of 146 arrivals+20.5 percentage points
Air Transat25.2% of 127 arrivals44.8% of 134 arrivals+19.6 percentage points
Aurigny Air Services23.5% of 459 arrivals42.3% of 563 arrivals+18.7 percentage points
Air Canada20.0% of 310 arrivals34.5% of 322 arrivals+14.5 percentage points
Wizz Air UK Ltd23.8% of 1,150 arrivals37.5% of 1,270 arrivals+13.7 percentage points
Iberia15.8% of 240 arrivals27.6% of 250 arrivals+11.8 percentage points
Egypt Air9.5% of 116 arrivals19.5% of 118 arrivals+10.0 percentage points
Cathay Pacific Airways27.0% of 163 arrivals36.9% of 179 arrivals+9.9 percentage points
Definitions and comparison limits

Disruption is more than fifteen minutes late plus short-notice cancellations, divided by operated movements plus short-notice cancellations. Only exact reconstructed monthly deltas are ordered. No cause or system-wide improvement is inferred.

Largest decreases — airlines

Changes compare Jun 2026 with Jun 2025.

Each row has at least one hundred arrivals in both months. All eligible published source populations; actual mix may change between years.

RecordJun 2025Jun 2026Change
Air India66.9% of 260 arrivals18.0% of 244 arrivals-48.9 percentage points
Singapore Airlines54.7% of 172 arrivals22.3% of 184 arrivals-32.4 percentage points
Emirates34.9% of 571 arrivals6.6% of 467 arrivals-28.2 percentage points
Pegasus Airlines23.1% of 364 arrivals18.0% of 267 arrivals-5.1 percentage points
Luxair27.7% of 137 arrivals24.2% of 157 arrivals-3.5 percentage points
Emerald Airlines UK Ltd32.2% of 678 arrivals28.6% of 747 arrivals-3.5 percentage points
Air Portugal34.6% of 338 arrivals32.3% of 319 arrivals-2.3 percentage points
United Airlines29.2% of 722 arrivals27.3% of 724 arrivals-1.9 percentage points
Ryanair UK Ltd37.0% of 1,601 arrivals35.2% of 1,774 arrivals-1.7 percentage points
Delta Airlines25.0% of 424 arrivals23.3% of 386 arrivals-1.7 percentage points
Definitions and comparison limits

Disruption is more than fifteen minutes late plus short-notice cancellations, divided by operated movements plus short-notice cancellations. Only exact reconstructed monthly deltas are ordered. No cause or system-wide improvement is inferred.

Versioned monthly changes and selection

Quick answers

What does this record cover?

Published CAA movements, with arrivals and departures kept separate.

Does this predict my flight?

No. Historical monthly aggregates cannot establish the outcome or circumstances of an individual flight.